NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
221 reportsClear category filter98,755 miles · Mar 19, 2019
Electrical System
TL* THE CONTACT OWNS A 2014 CHEVROLET IMPALA. WHEN THE VEHICLE WAS STARTED, THE MESSAGE CENTER DISPLAYED "SERVICE VEHICLE, AIR BAGS, FRONT LAMP DETECTION". THE VEHICLE WAS TAKEN TO MCGRATH CHEVROLET OF DUBUQUE (3255 UNIVERSITY AVE, DUBUQUE, IA 52003) WHERE IT WAS DIAGNOSED THAT THE TOTALLY INTEGRATED POWER MODULE NEEDED TO BE RE…
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TL* THE CONTACT OWNS A 2014 CHEVROLET IMPALA. WHEN THE VEHICLE WAS STARTED, THE MESSAGE CENTER DISPLAYED "SERVICE VEHICLE, AIR BAGS, FRONT LAMP DETECTION". THE VEHICLE WAS TAKEN TO MCGRATH CHEVROLET OF DUBUQUE (3255 UNIVERSITY AVE, DUBUQUE, IA 52003) WHERE IT WAS DIAGNOSED THAT THE TOTALLY INTEGRATED POWER MODULE NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED TWO WEEKS AGO, BUT THE INSTRUMENT PANEL BEGAN DISPLAYING THE SAME MESSAGE. THE VEHICLE WAS TAKEN BACK TO THE DEALER AND WAS AWAITING DIAGNOSTIC TESTING. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 98,755.
NHTSA ODI #11189909
70,000 miles · Mar 18, 2019
Electrical System
THE SIDE DETECTION MODULES BEHIND THE REAR TIRES ARE FAILING AND CAUSING ALL ELECTRONICS TO FAIL. THIS MODULE GOES BAD AND THE TRACTION CONTROL, ABS, BLINDSPOT MONITORS, HVAC, AIRBAGS, HEADLIGHTS AND GAUGES ALL GO OUT. THIS HAPPENS WHEN WHEN DRIVING AND IS ERRATIC IN ITS BEHAVIOR. IT ALSO MAKES THE GAS PEDAL HESITATE AND THE CAR…
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THE SIDE DETECTION MODULES BEHIND THE REAR TIRES ARE FAILING AND CAUSING ALL ELECTRONICS TO FAIL. THIS MODULE GOES BAD AND THE TRACTION CONTROL, ABS, BLINDSPOT MONITORS, HVAC, AIRBAGS, HEADLIGHTS AND GAUGES ALL GO OUT. THIS HAPPENS WHEN WHEN DRIVING AND IS ERRATIC IN ITS BEHAVIOR. IT ALSO MAKES THE GAS PEDAL HESITATE AND THE CAR BECOMES A HUGE SAFETY CONCERN. IT SEEMS LIKE IT IS A COMMON PROBLEM DUE TO POOR PLACEMENT.
NHTSA ODI #11189827
90,000 miles · Mar 17, 2019
Electrical SystemElectronic Stability Control (esc)Exterior Lighting
WHILE DRIVING, SEVERAL FUNCTIONS IN THE CAR WILL TURN OFF. FUNCTIONS INCLUDE HEATING/ COOLING SYSTEM, LIGHTS (DASHBOARD LIGHTS), DOORS LOCK/ UNLOCK AND COLLISION SYSTEMS TURNS OFF. I'VE RESEARCHED ONLINE AND FOUND SEVERAL OTHER CUSTOMERS HAVE HAD THE SAME ISSUES RANGING BACK TO 2018. I'VE TAKING MY CAR TO A GM DEALERSHIP AND …
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WHILE DRIVING, SEVERAL FUNCTIONS IN THE CAR WILL TURN OFF. FUNCTIONS INCLUDE HEATING/ COOLING SYSTEM, LIGHTS (DASHBOARD LIGHTS), DOORS LOCK/ UNLOCK AND COLLISION SYSTEMS TURNS OFF. I'VE RESEARCHED ONLINE AND FOUND SEVERAL OTHER CUSTOMERS HAVE HAD THE SAME ISSUES RANGING BACK TO 2018. I'VE TAKING MY CAR TO A GM DEALERSHIP AND FOUND THAT THE SENSOR MALFUNCTIONED AND NEEDED TO BE REPLACED. I ALSO FOUND THE SENSOR IS ON BACK ORDER, WHICH MAKES ME BELIEVE THIS IS A LARGER ISSUE THAN I THOUGHT AND SOME ONE NEEDS TO INVESTIGATE FURTHER. DRIVING ALONG THE HIGHWAY AND SEVERAL SECURITY FEATURES START TO TURN OFF IS DANGEROUS.
NHTSA ODI #11187362
56,000 miles · Mar 9, 2019
Electrical SystemVehicle Speed Control
WHILE DRIVING AT ANY SPEED THE INSTRUMENT CLUSTER WILL COMPLETELY DIE OUT. BLINKERS NOT FUNCTIONING. SEEMS LIKE SOME SORT OF SHORT. ALSO BLIND SPOT ALERT NOT WORKING , FORWARD FACING CAMERA, PARK ASSIST.
NHTSA ODI #11185592
66,000 miles · Feb 26, 2019
Electrical System
LEFT REAR SIDE DETECTION MODULE AND RELATED WIRING HARNESS FAILED DUE TO CORROSION FROM EXPOSURE TO WATER AND WEATHER ELEMENTS DURING NORMAL OPERATION. PLACEMENT OF MODULE INSIDE THE REAR BUMPER CAUSED MOISTURE TO ACCUMULATE WITHIN MODULE AND ITS RELATED ELECTRICAL CONNECTORS. DURING FAILURE, WHILE OPERATING THE VEHICLE, MODULE …
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LEFT REAR SIDE DETECTION MODULE AND RELATED WIRING HARNESS FAILED DUE TO CORROSION FROM EXPOSURE TO WATER AND WEATHER ELEMENTS DURING NORMAL OPERATION. PLACEMENT OF MODULE INSIDE THE REAR BUMPER CAUSED MOISTURE TO ACCUMULATE WITHIN MODULE AND ITS RELATED ELECTRICAL CONNECTORS. DURING FAILURE, WHILE OPERATING THE VEHICLE, MODULE SENT ERRATIC SIGNALS TO OBC CAUSING PARTIAL SHUTDOWN OF KEY ELECTRICAL COMPONENTS INCLUDING TURN SIGNALS AND INSTRUMENT CLUSTER. THIS MODULE HAS A HIGH, PRE-MATURE FAILURE RATE, DUE TO EXPOSURE TO WEATHER ELEMENTS AND ROAD SALT IN NORTHERN STATES. CHEVROLET HAS DIFFICULTY KEEPING SUFFICIENT MODULES IN STOCK AT LOCAL DEALERS. ORDER OUT TIME FOR SUBJECT COMPONENTS IS 3-5 BUISNESS DAYS.
NHTSA ODI #11182514
55,000 miles · Feb 25, 2019
Electrical SystemElectronic Stability Control (esc)
TL* THE CONTACT OWNS A 2014 CHEVROLET IMPALA. WHILE DRIVING 55 MPH, THE DOOR LOCKS KEPT LOCKING AND UNLOCKING, THE HEADLIGHTS WENT OUT, WHILE DRIVING, BUT THE MOTOR KEPT RUNNING. MY WIFE MADE IT HOME. THE (FOR ABOUT 13 TO 15 SECONDS) NEXT MORNING SHE TOOK IT TO WORK, ON THE WAY IT STALLED AND WOULD NOT START. CONSUMER REPLACED T…
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TL* THE CONTACT OWNS A 2014 CHEVROLET IMPALA. WHILE DRIVING 55 MPH, THE DOOR LOCKS KEPT LOCKING AND UNLOCKING, THE HEADLIGHTS WENT OUT, WHILE DRIVING, BUT THE MOTOR KEPT RUNNING. MY WIFE MADE IT HOME. THE (FOR ABOUT 13 TO 15 SECONDS) NEXT MORNING SHE TOOK IT TO WORK, ON THE WAY IT STALLED AND WOULD NOT START. CONSUMER REPLACED THE BATTERY AND STILL IT WOULD NOT START. BUT THE VEHICLE WOULD NOT START, AN INDEPENDENT MECHANIC DIAGNOSED THAT THE BLIND SIDE SENSOR WAS CORRODED AND INFORMED THE CONTACT TO UNPLUG THE WIRING HARNESS FROM THE BLIND SIDE SENSOR. AFTER UNPLUGGING THE WIRING HARNESS, THE VEHICLE WAS OPERABLE. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR DIAGNOSTIC TESTING OR REPAIRS. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 55,000. *TT CONSUMER STATED GM HAS A BULLETIN OUT ABOUT CORROSION IN BLIND SIDE SENSOR CONNECTION.*JB
NHTSA ODI #11182420
61,000 miles · Feb 15, 2019
Electrical SystemExterior LightingVehicle Speed Control
BLIND SPOT DETECTION SYSTEM BEGAN TO FAIL, INDICATED BY THE SIDE MIRROR INDICATORS REMAINING ON EVEN AFTER THE CAR WAS SHUT OFF. DEALER SERVICE CENTER DIAGNOSTIC TEST SHOWED THE BATTERY WAS OLD. THE PROBLEM PROGRESSED TO THE POINT WHERE THE INSTRUMENT CLUSTER WOULD ALSO FAIL - ALL INSTRUMENTS (SPEEDOMETER, TACHOMETER, ETC.) WOUL…
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BLIND SPOT DETECTION SYSTEM BEGAN TO FAIL, INDICATED BY THE SIDE MIRROR INDICATORS REMAINING ON EVEN AFTER THE CAR WAS SHUT OFF. DEALER SERVICE CENTER DIAGNOSTIC TEST SHOWED THE BATTERY WAS OLD. THE PROBLEM PROGRESSED TO THE POINT WHERE THE INSTRUMENT CLUSTER WOULD ALSO FAIL - ALL INSTRUMENTS (SPEEDOMETER, TACHOMETER, ETC.) WOULD GO DEAD, VIRTUALLY ALL WARNING LIGHTS (TRACTION CONTROL, ABS, AIR BAG, ETC.) WOULD GO ON, HEATING SYSTEM (INCLUDING BLOWER) WOULD GO DEAD AND TURN SIGNALS AND HAZARD LIGHT WOULD BE INOPERATIVE. ALL OF THIS WOULD HAPPEN WHILE DRIVING, WHETHER IN CITY TRAFFIC OR AT HIGHWAY SPEEDS. ALTHOUGH THE MAIN OPERATION OF THE VEHICLE HAS NOT YET BEEN AFFECTED, THERE IS NO WAY TO SIGNAL OTHER DRIVERS OF A PROBLEM (NO HAZARD LIGHT OR TURN SIGNALS) IN THE EVENT OF A LARGER FAILURE. RESEARCH OF ONLINE CUSTOMER FORUMS SHOWS THAT THIS PROBLEM IS COMMON WITH THE LATEST GENERATION (2014 AND NEWER) IMPALA. THE BLIND SPOT DETECTION SYSTEM IS CONNECTED TO THE INSTRUMENT CLUSTER AND THIS OCCURS RANDOMLY WHILE DRIVING.
NHTSA ODI #11180399
77,250 miles · Feb 12, 2019
Electrical System
BLIND SPOT DETECTION SYSTEM BEGAN TO FAIL, INDICATED BY THE SIDE MIRROR INDICATORS REMAINING ON EVEN AFTER THE CAR WAS SHUT OFF. DEALER SERVICE CENTER DIAGNOSTIC TEST SHOWED A FAULTY LEFT SIDE DETECTION MODULE. THE PROBLEM PROGRESSED TO THE POINT WHERE THE INSTRUMENT CLUSTER WOULD ALSO FAIL - ALL INSTRUMENTS (SPEEDOMETER, TACH…
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BLIND SPOT DETECTION SYSTEM BEGAN TO FAIL, INDICATED BY THE SIDE MIRROR INDICATORS REMAINING ON EVEN AFTER THE CAR WAS SHUT OFF. DEALER SERVICE CENTER DIAGNOSTIC TEST SHOWED A FAULTY LEFT SIDE DETECTION MODULE. THE PROBLEM PROGRESSED TO THE POINT WHERE THE INSTRUMENT CLUSTER WOULD ALSO FAIL - ALL INSTRUMENTS (SPEEDOMETER, TACHOMETER, ETC.) WOULD GO DEAD, VIRTUALLY ALL WARNING LIGHTS (TRACTION CONTROL, ABS, AIR BAG, ETC.) WOULD GO ON, HEATING SYSTEM (INCLUDING BLOWER) WOULD GO DEAD AND TURN SIGNALS AND HAZARD LIGHT WOULD BE INOPERATIVE. ALL OF THIS WOULD HAPPEN WHILE DRIVING, WHETHER IN CITY TRAFFIC OR AT HIGHWAY SPEEDS. ALTHOUGH THE MAIN OPERATION OF THE VEHICLE HAS NOT YET BEEN AFFECTED, THERE IS NO WAY TO SIGNAL OTHER DRIVERS OF A PROBLEM (NO HAZARD LIGHT OR TURN SIGNALS) IN THE EVENT OF A LARGER FAILURE. RESEARCH OF ONLINE CUSTOMER FORUMS SHOWS THAT THIS PROBLEM IS COMMON WITH THE LATEST GENERATION (2014 AND NEWER) IMPALA. REPLACING THE MODULES (AND IN SOME CASES, ALSO THE WIRING HARNESS, WHICH BECOMES CORRODED FROM THE WEATHER) SEEMS TO BE A SHORT TERM FIX AT BEST, AS THE DESIGN OF THE BLIND SPOT DETECTION SYSTEM EXPOSES THE SENSORS AND WIRING HARNESS TO ROAD SPRAY AND RAPID CORROSION DAMAGE. FURTHERMORE, THE BLIND SPOT DETECTION SYSTEM IS CONNECTED TO THE INSTRUMENT CLUSTER IN A MANNER THAT EVENTUALLY RENDERS THEM INOPERATIVE AS WELL. THIS OCCURS RANDOMLY WHILE DRIVING.
NHTSA ODI #11176654
45,000 miles · Feb 12, 2019
Electrical SystemElectronic Stability Control (esc)Steering
I HAVE FILED A COMPLAINT LAST MONTH ABOUT MY 2014 CHEVY IMPALA'S SIDE DETECTION SYSTEM, BACK UP CAMERA WARNINGS, AND FORWARD COLLISION SYSTEMS ALL NOT WORKING. TODAY I AM ADDING THAT WHILE DRIVING ON THE FREEWAY IN MODERATE RAIN DOING 55MPH, MY STABILITRAK LIGHT CAME ON, ABS LIGHT CAME ON AND I LOST POWER STEERING. I DID NOT LOS…
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I HAVE FILED A COMPLAINT LAST MONTH ABOUT MY 2014 CHEVY IMPALA'S SIDE DETECTION SYSTEM, BACK UP CAMERA WARNINGS, AND FORWARD COLLISION SYSTEMS ALL NOT WORKING. TODAY I AM ADDING THAT WHILE DRIVING ON THE FREEWAY IN MODERATE RAIN DOING 55MPH, MY STABILITRAK LIGHT CAME ON, ABS LIGHT CAME ON AND I LOST POWER STEERING. I DID NOT LOSE CONTROL OF MY CAR, BUT IT COULD HAVE BEEN BAD. I CALLED CHEVY AS SOON AS I GOT HOME TO FILE A COMPLAINT. I WILL BE BRINGING IT TO THE DEALERSHIP TOMORROW AS I HAVE READ OTHER COMPLAINTS OF THIS HAPPENING AS WELL WITH THE NEXT THING TO GO IS THE CAR WON'T START. THIS SITUATION IS UNCALLED FOR IN A VEHICLE WITH 45,000 MILES AT A PRICE TAG OF $35,000, ESPECIALLY WHEN THE OTHER ISSUES STARTED HAPPENING AROUND D 38,000 MILES. BEFORE TODAY, WHEN I STARTED MY CAR THE SERVICE LIGHTS FOR FRONT CAMERA, PARK ASSIST, AND SIDE DETECTION ALL LIT UP. I DID NOT TAKE IT TO THE DEALERSHIP AT THAT POINT BECAUSE I HEARD IT WAS EXPENSIVE TO FIX NOW I HAVE TO AS THE SAFETY OF DRIVING IT IS SEVERELY UNSTABLE.
NHTSA ODI #11176632
97,000 miles · Feb 11, 2019
Air BagsElectrical SystemExterior Lighting
WHEN MY SIDE DETECTION MONITORING SYSTEM FAILED A FEW MONTHS AGO I TOOK IT TO A LOCAL DEALER. THEY RESPONDED TELLING ME THAT, UNFORTUNATELY, THE DESIGN FOR THIS SENSOR MODULE/HARNESS IS COMPLETELY FLAWED. THE SENSORS ARE LOCATED IN THE REAR BUMPER, WITH PLASTIC HOUSING. THERE IS NO WEATHER PROTECTION, EVEN THOUGH THESE ARE DI…
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WHEN MY SIDE DETECTION MONITORING SYSTEM FAILED A FEW MONTHS AGO I TOOK IT TO A LOCAL DEALER. THEY RESPONDED TELLING ME THAT, UNFORTUNATELY, THE DESIGN FOR THIS SENSOR MODULE/HARNESS IS COMPLETELY FLAWED. THE SENSORS ARE LOCATED IN THE REAR BUMPER, WITH PLASTIC HOUSING. THERE IS NO WEATHER PROTECTION, EVEN THOUGH THESE ARE DIRECTLY BEHIND THE TIRES AND ARE EXPOSED TO ALL WEATHER - PLUS I LIVE IN IL SO WE'RE TALKING RAIN, SNOW, SALT, ETC. IT'S TWO SENSORS AND THE HARNESS. I COULDN'T AFFORD THE $1200 REPAIR, SO I FIGURED I WOULD JUST HAVE TO DEAL WITH THE LOSS OF THE SAFETY FEATURE AND IGNORE THE WARNING LIGHT. LAST WEEK, ALL OF MY WARNING LIGHTS CAME ON - THEFT DETECTION, FRONT CAMERA, AIRBAG, STABILITRACK, ETC. MY WINDSHIELD WIPERS, TURN SIGNALS, LOCKS AND HEADLIGHTS WERE ALL GOING HAYWIRE, AND AT ONE POINT WHILE DRIVING ALL OF MY GAUGES WENT TO ZERO (NO SPEED LIMIT, RPM, GAS GAUGE, ANYTHING) AND MY HEAT WENT OUT, TURN SIGNALS STOPPED WORKING AND MY HEADLIGHTS WENT OUT. IMMEDIATELY TOOK IT TO ANOTHER DEALERSHIP HOPING THAT MAYBE MY BATTERY (FACTORY ORIGINAL)/WIRING MIGHT BE THE CAUSE. NO SUCH LUCK. AS IT TURNS OUT THE SIDE DETECTION MODULES ARE NOW CORRUPTING ALL SENSORS AND ELECTRICAL SYSTEMS INCLUDING MY AIR BAGS! THE DEALERSHIP CONFIRMED THAT THE SIDE DETECTION MODULES HAD FAILED AND WERE CAUSING THE CHAOS THAT IS OCCURRING WITH ALL OF MY OTHER WARNING SYSTEMS, AND THAT MY AIR BAGS NO LONGER WORKED. MY AIR BAGS DON'T WORK BECAUSE OF THIS, NEVERMIND THE EXTREME DANGER IN HAVING A SYSTEM GO HAYWIRE WHILE I'M DRIVING! I'M AT NEARLY 100,000 MILES SO I'M WELL PAST ANY WARRANTY THAT WOULD COVER THIS, BUT I HAVE BEEN READING FORUMS AND CARCOMPLAINTS AND IT TURNS OUT THAT THIS IS A REALLY COMMON ISSUE. THE COST OF THE DIAGNOSTICS, COST OF THE REPAIR, AND ANTICIPATED COSTS OF SUBSEQUENT REPAIRS IS RIDICULOUS CONSIDERING IT IS A KNOWN DESIGN FLAW.
NHTSA ODI #11176241
Official recalls
12Jul 24, 2015
General Motors LLC (GM) is recalling certain model year 2014-2015 Chevrolet Impala vehicles manufactured April 15, 2013, to June 19, 2015, equipped with front vented-heated passenger seats. Accordingly, the Automatic Occupant Sensing (AOS) system may fail to suppress the front passenger air bag if a child seat is in the front passenger seat. These vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 208, "Occupant Crash Protection."
Consequence & remedy
Consequence: If the front passenger air bag deploys with a child seat in the front passenger seat, it increases the risk of injury to the child.
Remedy: GM will notify owners, and dealers will correct the calibration-learning error by preconditioning the empty seat, and also resetting the ECU to a seat zero-value, free of charge. The recall began on August 25, 2015. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 15400.
Apr 6, 2015
General Motors LLC (GM) is recalling certain model year 2014 Chevrolet Impala vehicles manufactured March 22, 2013, to May 22, 2014. In the affected vehicles, the electronic parking brake piston actuation arm may not fully retract causing the brake pads to stay partially engaged. Thus, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Systems (FMVSS) No. 135 "Light Vehicle Brake Systems."
Consequence & remedy
Consequence: Brake pads that remain partially engaged with the rotors may cause excessive brake heat that may result in a fire.
Remedy: GM has notified owners, and dealers will reprogram the electronic parking brake control module with new software, free of charge. The recall began on May 6, 2015. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 15259. Note: The vehicles covered by this campaign were previously remedied incorrectly under campaigns 14V541 or 15V085.
Feb 11, 2015
General Motors LLC (GM) is recalling certain model year 2014 Chevrolet Impala vehicles manufactured November 15, 2012, to May 30, 2014. In the affected vehicles, the electronic parking brake piston actuation arm may not fully retract causing the brake pads to stay partially engaged. Thus, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Systems (FMVSS) No. 135 "Light Vehicle Brake Systems."
Consequence & remedy
Consequence: Brake pads that remain partially engaged with the rotors may cause excessive brake heat that may result in a fire.
Remedy: GM will notify owners, and dealers will reprogram the electronic parking brake control module with new software, free of charge. The recall began March 5, 2015. Owners may contact Chevrolet customer service at 1-800-222-1020 (Chevrolet). GM's number for this recall is 15100. Note: This recall covers a limited population of vehicles that were remedied incorrectly under recall 14V-541.
Oct 1, 2014
General Motors LLC (GM) is recalling certain model year 2013-2014 Cadillac CTS, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, GMC Yukon, and Yukon XL, and 2014 Buick Enclave, Chevrolet Express, Impala, Silverado HD, Traverse, GMC Acadia, Savana, and Sierra HD vehicles. In the affected vehicles, the chassis electronic module may be internally contaminated, resulting in an electrical short.
Consequence & remedy
Consequence: If the module experiences an electrical short, the vehicle could stall, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will replace the chassis electronic module, free of charge. The recall began on December 26, 2014. Owners may contact GM customer service at 1-800-521-7300 (Buick), 1-800-458-006 (Cadillac), 1-800-222-1020 (Chevrolet), and 1-800-462-8782 (GMC). GMs number for this recall is 14515.
Sep 9, 2014
General Motors LLC (GM) is recalling certain model year 2013-2015 Cadillac XTS vehicles manufactured February 14, 2012, to August 22, 2014, and 2014-2015 Chevrolet Impala vehicles manufactured November 5, 2012, to September 2, 2014. In the affected vehicles, the electronic parking brake piston actuation arm may not fully retract causing the brake pads to stay partially engaged.
Consequence & remedy
Consequence: Brake pads that remain partially engaged with the rotors may cause excessive brake heat that may result in a fire.
Remedy: GM will notify owners, and dealers will update the electronic parking brake software, free of charge. The recall began on October 28, 2014. Owners may contact Chevrolet customer service at 1-800-222-1020, or Cadillac customer service at 1-800-458-8006. GM's number for this recall is 14471.
Aug 28, 2014
General Motors LLC (GM) is recalling certain model year 2013-2014 Cadillac XTS vehicles manufactured April 11, 2013, to June 27, 2013, and 2014 Chevrolet Impala vehicles manufactured May 13, 2013, to November 5, 2013. The affected vehicles may have left the factory with the sensing and diagnostic module (SDM) set to "manufacturing mode."
Consequence & remedy
Consequence: In manufacturing mode, the vehicle's air bags will not deploy in the event of a crash, increasing the risk of occupant injury.
Remedy: GM will notify owners, and dealers are to reprogram the SDM to the correct mode, free of charge. The recall is expected to begin in September 2014. Owners may contact Cadillac customer service at 1-800-458-8006 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 14532.
Aug 8, 2014
General Motors LLC (GM) is recalling certain model year 2014-2015 Chevrolet Impala vehicles manufactured May 7, 2014, to July 28, 2014. In the event of an accident, the center storage console may not stay latched. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard No. 201, "Occupant Protection In Interior Impact."
Consequence & remedy
Consequence: The storage compartment door may not remain closed in the event of a crash, increasing the risk of occupant injury.
Remedy: Parts to remedy this condition are not currently available. GM will send owners an interim notification in early October 2014, and will send a second letter when parts are available. At that time dealers will inspect, and if necessary, replace the console storage compartment door inertia latch, free of charge. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 14476.
Jul 23, 2014
General Motors LLC (GM) is recalling certain model year 2014 Chevrolet Impala vehicles manufactured November 5, 2012, to December 20, 2013. Due to a poor electrical ground connection to the Power Steering Control Module (PSCM), the affected vehicles may have a loss of power steering assist during start up or while driving.
Consequence & remedy
Consequence: If power steering assist is lost, greater driver effort would be required to steer the vehicle at low speeds, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will clean paint from behind the ground stud nut and update the PSCM software, free of charge. Owners may contact Chevrolet customer service at 1-800-222-1020. The recall began on August 21, 2014. GM's number for this recall is 14330.
Jul 2, 2014
General Motors LLC (GM) is recalling certain model year 2014 Buick Regal, Cadillac XTS, Chevrolet Camaro and Chevrolet Impala vehicles. Improperly torqued fasteners may cause the steering intermediate shaft and the steering gear and/or the lower control arm and the lower ball joint to separate.
Consequence & remedy
Consequence: If any of the components separate, the vehicle may have a loss of steering, increasing the risk of a crash.
Remedy: GM began to notify owners on June 27, 2014, and dealers will inspect the fasteners for correct torque, correcting them as necessary, free of charge. Owners may contact GM customer service at 1-800-521-7300 (Buick), 1-800-458-8006 (Cadillac) or 1-800-222-1020 (Chevrolet). GM's number for this recall is 14378.
Jun 23, 2014
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) is recalling certain model year 2005-2009 Buick LaCrosse, 2006-2011 Buick Lucerne, 2000-2005 Cadillac DeVille, 2006-2011 Cadillac DTS, 2006-2014 Chevrolet Impala, and 2006-2007 Chevrolet Monte Carlo vehicles. In the affected vehicles, the weight on the key ring and road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.
Consequence & remedy
Consequence: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury. Additionally, a key knocked out of the run position will cause loss of engine power, power steering, and power braking, increasing the risk of a vehicle crash.
Remedy: GM will notify owners, and dealers will install two key rings and an insert in the key slot or a cover over the key head on all ignition keys, free of charge. The recall began on September 23, 2014. Owners may contact General Motors customer service at 1-800-521-7300 (Buick), 1-800-458-8006 (Cadillac), and 1-800-222-1020 (Chevrolet). GM's number for this recall is 14299.
Feb 21, 2014
General Motors LLC (GM) is recalling certain model year 2014 Buick Regal, LaCrosse, Verano, and Enclave, and Chevrolet Impala, Malibu, Cruze, and Traverse, and GMC Acadia vehicles equipped with automatic transmissions. In the affected vehicles, the transmission shift cable adjuster may disengage from the transmission shift lever. As such, these vehicles do not conform to Federal Motor Vehicle Safety Standard (FMVSS) number 102, "Transmission Shift Lever Sequence, Starter Interlock, and Transmission Braking Effect." They also fail to conform to FMVSS number 114, "Theft Protection and Rollaway Prevention."
Consequence & remedy
Consequence: If a vehicle's shift cable disengages from the transmission shift lever, a driver may be unable to shift gear positions and the indicated shift position may not represent the gear position the vehicle is in. Should a disengagement occur while the vehicle is being driven, when the driver goes to stop and park the vehicle, the driver may be able to shift the lever to the "PARK" position, but the vehicle transmission may not be in the "PARK" gear position. If the vehicle is not in the "PARK" position there is a risk the vehicle will roll away as the driver and other occupants exit the vehicle or anytime thereafter. A vehicle rollaway increases the risk of injury to exiting occupants and bystanders.
Remedy: General Motors will notify owners, and dealers will inspect and replace any affected transmission shift cable adjusters, free of charge. The recall began on April 10, 2014. Chevrolet owners may contact General Motors at 1-800-222-1020, Buick owners at 1-800-521-7300, and GMC owners at 1-800-462-8782. General Motors' number associated with this recall is 14048.
May 24, 2013
General Motors LLC (GM) is recalling certain model year 2013 Cadillac ATS and model year 2013 Cadillac XTS; model year 2014 Chevrolet Impala; and 2013 Chevrolet Sonic vehicles. Originally, in May 2013, GM recalled 1,627 model year 2013 Cadillac ATS and model year 2013 Cadillac XTS; and model year 2014 Chevrolet Impala vehicles. In October 2013, GM informed the agency that it was adding model year 2013 Chevrolet Sonic vehicles to this campaign , representing an additional 8,050 units. The total number of vehicles being recalled is now 9,677. On the affected vehicles, the brake lamps may intermittently flash without the brakes being applied and the cruise control may disengage. Thus, these vehicles fail to conform to the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, "Lamps, reflective devices, and associated equipment."
Consequence & remedy
Consequence: If the brake lamps flash when the vehicle is not slowing, a following driver may not adjust vehicle speed when the vehicle is in fact braking, and the brake lamps are illuminating as intended, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will reprogram the body control module. The recall began on June 13, 2013. Owner's may contact Chevrolet at 1-800-630-2438 or Cadillac at 1-866-982-2339. GM's recall number is 13158.
Additional source detail variants (2)
Exterior Lighting:brake Lights
General Motors LLC (GM) is recalling certain model year 2013 Cadillac ATS and model year 2013 Cadillac XTS; model year 2014 Chevrolet Impala; and 2013 Chevrolet Sonic vehicles. Originally, in May 2013, GM recalled 1,627 model year 2013 Cadillac ATS and model year 2013 Cadillac XTS; and model year 2014 Chevrolet Impala vehicles. In October 2013, GM informed the agency that it was adding model year 2013 Chevrolet Sonic vehicles to this campaign , representing an additional 8,050 units. The total number of vehicles being recalled is now 9,677. On the affected vehicles, the brake lamps may intermittently flash without the brakes being applied and the cruise control may disengage. Thus, these vehicles fail to conform to the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, "Lamps, reflective devices, and associated equipment."
Consequence: If the brake lamps flash when the vehicle is not slowing, a following driver may not adjust vehicle speed when the vehicle is in fact braking, and the brake lamps are illuminating as intended, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will reprogram the body control module. The recall began on June 13, 2013. Owner's may contact Chevrolet at 1-800-630-2438 or Cadillac at 1-866-982-2339. GM's recall number is 13158.
Electrical System
General Motors LLC (GM) is recalling certain model year 2013 Cadillac ATS and model year 2013 Cadillac XTS; model year 2014 Chevrolet Impala; and 2013 Chevrolet Sonic vehicles. Originally, in May 2013, GM recalled 1,627 model year 2013 Cadillac ATS and model year 2013 Cadillac XTS; and model year 2014 Chevrolet Impala vehicles. In October 2013, GM informed the agency that it was adding model year 2013 Chevrolet Sonic vehicles to this campaign , representing an additional 8,050 units. The total number of vehicles being recalled is now 9,677. On the affected vehicles, the brake lamps may intermittently flash without the brakes being applied and the cruise control may disengage. Thus, these vehicles fail to conform to the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, "Lamps, reflective devices, and associated equipment."
Consequence: If the brake lamps flash when the vehicle is not slowing, a following driver may not adjust vehicle speed when the vehicle is in fact braking, and the brake lamps are illuminating as intended, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will reprogram the body control module. The recall began on June 13, 2013. Owner's may contact Chevrolet at 1-800-630-2438 or Cadillac at 1-866-982-2339. GM's recall number is 13158.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
2AQ17002 · Bical Chevrolet/loss Of Power Steering
Opened Mar 16, 2017 · Closed May 14, 2020
Status: closed (inferred from source dates) · Steering:electric Power Assist System
NHTSA opened AQ17-002 to determine whether BiCal Chevrolet of Valley Stream, New York (BiCal) has complied with the requirements of the National Traffic and Motor Vehicle Safety Act, 49 U.S.C. Chapter 301 (Safety Act) and its implementing regulations. The Safety Act requires, among other things, that a manufacturer notify its dealers of defects related to motor vehicle safety and non-compliances with Federal Motor Vehicle Safety Standards and, in turn, that a dealer not sell a new vehicle subject to a recall unless the recall remedy has been performed (49 U.S.C. ?30120(i)).NHTSA issued an information request (IR) letter to BiCal on March 15, 2017. BiCal responded to this request on November 8, 2017. On March 16, 2017, an IR letter was issued to General Motors LLC (GM) and a response was received from GM on April 28, 2017. In NHTSA?s view, it had difficulties in obtaining responses to IR letters from BiCal throughout the AQ investigation, including not receiving a response to the first IR until more than three months after the original deadline. Additionally, in NHTSA's view, BiCal failed to provide a full response to the second IR. BiCal does not contest NHTSA's conclusion that it violated the Safety Act by initially failing to provide full and complete responses to the IRs from NHTSA by their deadlines. NHTSA's investigation also indicated that BiCal sold and delivered at least 54 recalled vehicles that did not have the recall remedy completed at the time the vehicles were delivered to the customers.BiCal did not contest NHTSA?s conclusion that it violated the Safety Act by selling and delivering certain new motor vehicles that were subject to a recall before the vehicles were remedied.Under a Settlement Agreement dated March 11, 2019, BiCal agreed to pay compromised civil penalties in the amount of $40,000. This Audit Query is closed.
PE14010 · Active Safety System Malfunction
Opened Apr 15, 2014 · Closed Nov 21, 2014
Status: closed (inferred from source dates) · Forward Collision Avoidance; Forward Collision Avoidance: Adaptive Cruise Control; Forward Collision Avoidance: Crash Imminent Braking; Parking Brake; Parking Brake:indicator Light
On April 15, 2014, the Office of Defects Investigations (ODI) opened Preliminary Evaluation PE14-010 based on two complaints alleging incidents of sudden/severe uncommanded braking resulting in rear impact collisions in model year (MY) 2014 Chevrolet Impala vehicles.ODI analyzed all complaints related to allegations of unwanted brake activations while driving that were provided by GM or submitted to ODI from consumers and has not identified any additional incidents involving sudden, extended (greater than 1 second) autonomous braking.The two crash complaints that were the basis of PE14-010 involved rental vehicles equipped with an Electric Park Brake (EPB) system.Neither vehicle was equipped with Full Speed Range Adaptive Cruise Control (FSRACC) or Forward Collision Alert (FCA) systems. According to GM, brake lights will be illuminated if the service brakes are applied or the EPB system is activated while the vehicle is moving (dynamic EPB brake apply).In a dynamic EPB brake apply, the Electric Brake Control Module (EBCM) initiates a controlled deceleration while activating a chime and a telltale light.If the service brake is applied at any time during dynamic EPB brake apply, the system provides a substantially greater deceleration.Witness statements and analysis of crash data from the two incidents are consistent with inadvertent dynamic EPB brake applications.Both reports alleged beeping noise immediately before the accidents and one pre-crash data report shows a moderate initial vehicle deceleration followed by in increase in deceleration to approximately 0.6g just prior to the vehicle stopping and being struck from the rear.During this investigation, General Motors LLC (GM) inspected the two crash incident vehicles and examined each of the EPB switches to assess potential mechanical and electrical fault conditions.The testing and part examination did not find any evidence of mechanical or electrical failure of the EPB switches and GM did not identify any faults in the subject components or systems that could have caused or contributed to autonomous brake applications in the incident vehicles.According to GM, the evidence indicates the events were caused by inadvertent driver actuation of the EPB switch. Additionally, during this investigation, GM identified a defect condition in the EPB software in approximately 132,921 model year (MY) 2014 through 2015 Chevrolet Impala and MY 2013 through 2015 Cadillac XTS vehicles (Recall No. 14V-541) that could result in failure of the EPB to release after vehicle start-up.In this condition, the electronic parking brake piston actuation arm may not fully retract when the driver disengages the EPB, which may cause the brake pads to stay partially engaged with the rotor.According to GM, the parking brake indicator may not illuminate when the EPB is engaged and the driver may experience poor vehicle acceleration, undesired deceleration during idle coast-down, excessive brake heat, and premature wear to some brake components. If the vehicle is operated for an extended period of time in this condition, there is a potential for the rear brakes to generate significant heat, smoke, and sparks.GM and its supplier, Mando Pyeongtaek, upgraded the EPB software to address brake drag conditions and issued a recall bulletin on September 4, 2014 instructing dealers to reprogram the electronic parking brake control module on all affected vehicles. This preliminary evaluation is closed.The closing of this investigation does not constitute a finding that a safety-related defect does not exist.For additional information regarding this investigation, see Attachment A to this c
Additional source detail variants (5)
Forward Collision Avoidance: Adaptive Cruise Control
On April 15, 2014, the Office of Defects Investigations (ODI) opened Preliminary Evaluation PE14-010 based on two complaints alleging incidents of sudden/severe uncommanded braking resulting in rear impact collisions in model year (MY) 2014 Chevrolet Impala vehicles.ODI analyzed all complaints related to allegations of unwanted brake activations while driving that were provided by GM or submitted to ODI from consumers and has not identified any additional incidents involving sudden, extended (greater than 1 second) autonomous braking.The two crash complaints that were the basis of PE14-010 involved rental vehicles equipped with an Electric Park Brake (EPB) system.Neither vehicle was equipped with Full Speed Range Adaptive Cruise Control (FSRACC) or Forward Collision Alert (FCA) systems. According to GM, brake lights will be illuminated if the service brakes are applied or the EPB system is activated while the vehicle is moving (dynamic EPB brake apply).In a dynamic EPB brake apply, the Electric Brake Control Module (EBCM) initiates a controlled deceleration while activating a chime and a telltale light.If the service brake is applied at any time during dynamic EPB brake apply, the system provides a substantially greater deceleration.Witness statements and analysis of crash data from the two incidents are consistent with inadvertent dynamic EPB brake applications.Both reports alleged beeping noise immediately before the accidents and one pre-crash data report shows a moderate initial vehicle deceleration followed by in increase in deceleration to approximately 0.6g just prior to the vehicle stopping and being struck from the rear.During this investigation, General Motors LLC (GM) inspected the two crash incident vehicles and examined each of the EPB switches to assess potential mechanical and electrical fault conditions.The testing and part examination did not find any evidence of mechanical or electrical failure of the EPB switches and GM did not identify any faults in the subject components or systems that could have caused or contributed to autonomous brake applications in the incident vehicles.According to GM, the evidence indicates the events were caused by inadvertent driver actuation of the EPB switch. Additionally, during this investigation, GM identified a defect condition in the EPB software in approximately 132,921 model year (MY) 2014 through 2015 Chevrolet Impala and MY 2013 through 2015 Cadillac XTS vehicles (Recall No. 14V-541) that could result in failure of the EPB to release after vehicle start-up.In this condition, the electronic parking brake piston actuation arm may not fully retract when the driver disengages the EPB, which may cause the brake pads to stay partially engaged with the rotor.According to GM, the parking brake indicator may not illuminate when the EPB is engaged and the driver may experience poor vehicle acceleration, undesired deceleration during idle coast-down, excessive brake heat, and premature wear to some brake components. If the vehicle is operated for an extended period of time in this condition, there is a potential for the rear brakes to generate significant heat, smoke, and sparks.GM and its supplier, Mando Pyeongtaek, upgraded the EPB software to address brake drag conditions and issued a recall bulletin on September 4, 2014 instructing dealers to reprogram the electronic parking brake control module on all affected vehicles. This preliminary evaluation is closed.The closing of this investigation does not constitute a finding that a safety-related defect does not exist.For additional information regarding this investigation, see Attachment A to this c
Forward Collision Avoidance: Crash Imminent Braking
On April 15, 2014, the Office of Defects Investigations (ODI) opened Preliminary Evaluation PE14-010 based on two complaints alleging incidents of sudden/severe uncommanded braking resulting in rear impact collisions in model year (MY) 2014 Chevrolet Impala vehicles.ODI analyzed all complaints related to allegations of unwanted brake activations while driving that were provided by GM or submitted to ODI from consumers and has not identified any additional incidents involving sudden, extended (greater than 1 second) autonomous braking.The two crash complaints that were the basis of PE14-010 involved rental vehicles equipped with an Electric Park Brake (EPB) system.Neither vehicle was equipped with Full Speed Range Adaptive Cruise Control (FSRACC) or Forward Collision Alert (FCA) systems. According to GM, brake lights will be illuminated if the service brakes are applied or the EPB system is activated while the vehicle is moving (dynamic EPB brake apply).In a dynamic EPB brake apply, the Electric Brake Control Module (EBCM) initiates a controlled deceleration while activating a chime and a telltale light.If the service brake is applied at any time during dynamic EPB brake apply, the system provides a substantially greater deceleration.Witness statements and analysis of crash data from the two incidents are consistent with inadvertent dynamic EPB brake applications.Both reports alleged beeping noise immediately before the accidents and one pre-crash data report shows a moderate initial vehicle deceleration followed by in increase in deceleration to approximately 0.6g just prior to the vehicle stopping and being struck from the rear.During this investigation, General Motors LLC (GM) inspected the two crash incident vehicles and examined each of the EPB switches to assess potential mechanical and electrical fault conditions.The testing and part examination did not find any evidence of mechanical or electrical failure of the EPB switches and GM did not identify any faults in the subject components or systems that could have caused or contributed to autonomous brake applications in the incident vehicles.According to GM, the evidence indicates the events were caused by inadvertent driver actuation of the EPB switch. Additionally, during this investigation, GM identified a defect condition in the EPB software in approximately 132,921 model year (MY) 2014 through 2015 Chevrolet Impala and MY 2013 through 2015 Cadillac XTS vehicles (Recall No. 14V-541) that could result in failure of the EPB to release after vehicle start-up.In this condition, the electronic parking brake piston actuation arm may not fully retract when the driver disengages the EPB, which may cause the brake pads to stay partially engaged with the rotor.According to GM, the parking brake indicator may not illuminate when the EPB is engaged and the driver may experience poor vehicle acceleration, undesired deceleration during idle coast-down, excessive brake heat, and premature wear to some brake components. If the vehicle is operated for an extended period of time in this condition, there is a potential for the rear brakes to generate significant heat, smoke, and sparks.GM and its supplier, Mando Pyeongtaek, upgraded the EPB software to address brake drag conditions and issued a recall bulletin on September 4, 2014 instructing dealers to reprogram the electronic parking brake control module on all affected vehicles. This preliminary evaluation is closed.The closing of this investigation does not constitute a finding that a safety-related defect does not exist.For additional information regarding this investigation, see Attachment A to this c
Forward Collision Avoidance
On April 15, 2014, the Office of Defects Investigations (ODI) opened Preliminary Evaluation PE14-010 based on two complaints alleging incidents of sudden/severe uncommanded braking resulting in rear impact collisions in model year (MY) 2014 Chevrolet Impala vehicles.ODI analyzed all complaints related to allegations of unwanted brake activations while driving that were provided by GM or submitted to ODI from consumers and has not identified any additional incidents involving sudden, extended (greater than 1 second) autonomous braking.The two crash complaints that were the basis of PE14-010 involved rental vehicles equipped with an Electric Park Brake (EPB) system.Neither vehicle was equipped with Full Speed Range Adaptive Cruise Control (FSRACC) or Forward Collision Alert (FCA) systems. According to GM, brake lights will be illuminated if the service brakes are applied or the EPB system is activated while the vehicle is moving (dynamic EPB brake apply).In a dynamic EPB brake apply, the Electric Brake Control Module (EBCM) initiates a controlled deceleration while activating a chime and a telltale light.If the service brake is applied at any time during dynamic EPB brake apply, the system provides a substantially greater deceleration.Witness statements and analysis of crash data from the two incidents are consistent with inadvertent dynamic EPB brake applications.Both reports alleged beeping noise immediately before the accidents and one pre-crash data report shows a moderate initial vehicle deceleration followed by in increase in deceleration to approximately 0.6g just prior to the vehicle stopping and being struck from the rear.During this investigation, General Motors LLC (GM) inspected the two crash incident vehicles and examined each of the EPB switches to assess potential mechanical and electrical fault conditions.The testing and part examination did not find any evidence of mechanical or electrical failure of the EPB switches and GM did not identify any faults in the subject components or systems that could have caused or contributed to autonomous brake applications in the incident vehicles.According to GM, the evidence indicates the events were caused by inadvertent driver actuation of the EPB switch. Additionally, during this investigation, GM identified a defect condition in the EPB software in approximately 132,921 model year (MY) 2014 through 2015 Chevrolet Impala and MY 2013 through 2015 Cadillac XTS vehicles (Recall No. 14V-541) that could result in failure of the EPB to release after vehicle start-up.In this condition, the electronic parking brake piston actuation arm may not fully retract when the driver disengages the EPB, which may cause the brake pads to stay partially engaged with the rotor.According to GM, the parking brake indicator may not illuminate when the EPB is engaged and the driver may experience poor vehicle acceleration, undesired deceleration during idle coast-down, excessive brake heat, and premature wear to some brake components. If the vehicle is operated for an extended period of time in this condition, there is a potential for the rear brakes to generate significant heat, smoke, and sparks.GM and its supplier, Mando Pyeongtaek, upgraded the EPB software to address brake drag conditions and issued a recall bulletin on September 4, 2014 instructing dealers to reprogram the electronic parking brake control module on all affected vehicles. This preliminary evaluation is closed.The closing of this investigation does not constitute a finding that a safety-related defect does not exist.For additional information regarding this investigation, see Attachment A to this c
Parking Brake
On April 15, 2014, the Office of Defects Investigations (ODI) opened Preliminary Evaluation PE14-010 based on two complaints alleging incidents of sudden/severe uncommanded braking resulting in rear impact collisions in model year (MY) 2014 Chevrolet Impala vehicles.ODI analyzed all complaints related to allegations of unwanted brake activations while driving that were provided by GM or submitted to ODI from consumers and has not identified any additional incidents involving sudden, extended (greater than 1 second) autonomous braking.The two crash complaints that were the basis of PE14-010 involved rental vehicles equipped with an Electric Park Brake (EPB) system.Neither vehicle was equipped with Full Speed Range Adaptive Cruise Control (FSRACC) or Forward Collision Alert (FCA) systems. According to GM, brake lights will be illuminated if the service brakes are applied or the EPB system is activated while the vehicle is moving (dynamic EPB brake apply).In a dynamic EPB brake apply, the Electric Brake Control Module (EBCM) initiates a controlled deceleration while activating a chime and a telltale light.If the service brake is applied at any time during dynamic EPB brake apply, the system provides a substantially greater deceleration.Witness statements and analysis of crash data from the two incidents are consistent with inadvertent dynamic EPB brake applications.Both reports alleged beeping noise immediately before the accidents and one pre-crash data report shows a moderate initial vehicle deceleration followed by in increase in deceleration to approximately 0.6g just prior to the vehicle stopping and being struck from the rear.During this investigation, General Motors LLC (GM) inspected the two crash incident vehicles and examined each of the EPB switches to assess potential mechanical and electrical fault conditions.The testing and part examination did not find any evidence of mechanical or electrical failure of the EPB switches and GM did not identify any faults in the subject components or systems that could have caused or contributed to autonomous brake applications in the incident vehicles.According to GM, the evidence indicates the events were caused by inadvertent driver actuation of the EPB switch. Additionally, during this investigation, GM identified a defect condition in the EPB software in approximately 132,921 model year (MY) 2014 through 2015 Chevrolet Impala and MY 2013 through 2015 Cadillac XTS vehicles (Recall No. 14V-541) that could result in failure of the EPB to release after vehicle start-up.In this condition, the electronic parking brake piston actuation arm may not fully retract when the driver disengages the EPB, which may cause the brake pads to stay partially engaged with the rotor.According to GM, the parking brake indicator may not illuminate when the EPB is engaged and the driver may experience poor vehicle acceleration, undesired deceleration during idle coast-down, excessive brake heat, and premature wear to some brake components. If the vehicle is operated for an extended period of time in this condition, there is a potential for the rear brakes to generate significant heat, smoke, and sparks.GM and its supplier, Mando Pyeongtaek, upgraded the EPB software to address brake drag conditions and issued a recall bulletin on September 4, 2014 instructing dealers to reprogram the electronic parking brake control module on all affected vehicles. This preliminary evaluation is closed.The closing of this investigation does not constitute a finding that a safety-related defect does not exist.For additional information regarding this investigation, see Attachment A to this c
Parking Brake:indicator Light
On April 15, 2014, the Office of Defects Investigations (ODI) opened Preliminary Evaluation PE14-010 based on two complaints alleging incidents of sudden/severe uncommanded braking resulting in rear impact collisions in model year (MY) 2014 Chevrolet Impala vehicles.ODI analyzed all complaints related to allegations of unwanted brake activations while driving that were provided by GM or submitted to ODI from consumers and has not identified any additional incidents involving sudden, extended (greater than 1 second) autonomous braking.The two crash complaints that were the basis of PE14-010 involved rental vehicles equipped with an Electric Park Brake (EPB) system.Neither vehicle was equipped with Full Speed Range Adaptive Cruise Control (FSRACC) or Forward Collision Alert (FCA) systems. According to GM, brake lights will be illuminated if the service brakes are applied or the EPB system is activated while the vehicle is moving (dynamic EPB brake apply).In a dynamic EPB brake apply, the Electric Brake Control Module (EBCM) initiates a controlled deceleration while activating a chime and a telltale light.If the service brake is applied at any time during dynamic EPB brake apply, the system provides a substantially greater deceleration.Witness statements and analysis of crash data from the two incidents are consistent with inadvertent dynamic EPB brake applications.Both reports alleged beeping noise immediately before the accidents and one pre-crash data report shows a moderate initial vehicle deceleration followed by in increase in deceleration to approximately 0.6g just prior to the vehicle stopping and being struck from the rear.During this investigation, General Motors LLC (GM) inspected the two crash incident vehicles and examined each of the EPB switches to assess potential mechanical and electrical fault conditions.The testing and part examination did not find any evidence of mechanical or electrical failure of the EPB switches and GM did not identify any faults in the subject components or systems that could have caused or contributed to autonomous brake applications in the incident vehicles.According to GM, the evidence indicates the events were caused by inadvertent driver actuation of the EPB switch. Additionally, during this investigation, GM identified a defect condition in the EPB software in approximately 132,921 model year (MY) 2014 through 2015 Chevrolet Impala and MY 2013 through 2015 Cadillac XTS vehicles (Recall No. 14V-541) that could result in failure of the EPB to release after vehicle start-up.In this condition, the electronic parking brake piston actuation arm may not fully retract when the driver disengages the EPB, which may cause the brake pads to stay partially engaged with the rotor.According to GM, the parking brake indicator may not illuminate when the EPB is engaged and the driver may experience poor vehicle acceleration, undesired deceleration during idle coast-down, excessive brake heat, and premature wear to some brake components. If the vehicle is operated for an extended period of time in this condition, there is a potential for the rear brakes to generate significant heat, smoke, and sparks.GM and its supplier, Mando Pyeongtaek, upgraded the EPB software to address brake drag conditions and issued a recall bulletin on September 4, 2014 instructing dealers to reprogram the electronic parking brake control module on all affected vehicles. This preliminary evaluation is closed.The closing of this investigation does not constitute a finding that a safety-related defect does not exist.For additional information regarding this investigation, see Attachment A to this c
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