NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
634 reportsMileage unknown · Apr 24, 2025
Unknown Or OtherVisibility/wiper
Sunshade failure. The sunshade runs back and forth on track to close or open cloth cover. While driving with 4 main windows I pushed button to open shade halfway down the line the shade got off track and you could hear plastic cracking noises. I stopped the shade and pushed it closed more cracking noises and the the whole cloth …
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Sunshade failure. The sunshade runs back and forth on track to close or open cloth cover. While driving with 4 main windows I pushed button to open shade halfway down the line the shade got off track and you could hear plastic cracking noises. I stopped the shade and pushed it closed more cracking noises and the the whole cloth fell and hung blocking all rear view while on freeway at normal speed. I was able to pull over and slowly push and assist cloth back into car frame so it's not hanging but it no longer works as intended. This is known and per dealership ove 1k for new track and requires moonroof removal to repair. Not covered under warranty
NHTSA ODI #11656647
Mileage unknown · Apr 19, 2025
Electrical SystemLane Departure
I received an alert to service the sideview sensors. Also, the sideview alert keeps flashing in the side mirrors even when there's no vehicle present.
NHTSA ODI #11655597
Mileage unknown · Apr 9, 2025
Electrical SystemLane Departure
Service side detection system came up on the display while driving on the freeway at 65MPH.
NHTSA ODI #11653691
Mileage unknown · Apr 6, 2025
Electrical SystemLane DepartureVehicle Speed Control
Side detection system failure. I have had 3 harness replacements on driver side. 2 harness replacements on passenger side, and a module replacement just 2 years ago. This failure causes my instrumentation to shut off, turn signals not work, and shuts off cruise control when in use. I have read outher more extreme cases like e…
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Side detection system failure. I have had 3 harness replacements on driver side. 2 harness replacements on passenger side, and a module replacement just 2 years ago. This failure causes my instrumentation to shut off, turn signals not work, and shuts off cruise control when in use. I have read outher more extreme cases like engine compartment fires or car shutting off while driving. I believe all these should be considered safety issues. I have owned this vehicle since new.
NHTSA ODI #11653031
Mileage unknown · Mar 19, 2025
Air Bags
The contact owns a 2014 Chevrolet Impala. The contact stated that the front passenger's side seat belt audible chime was sounded, and the message "Air Bag ON" was displayed while the front passenger's side seat was unoccupied. The vehicle was taken to the dealer, where the calibration-learning error was corrected by precondition…
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The contact owns a 2014 Chevrolet Impala. The contact stated that the front passenger's side seat belt audible chime was sounded, and the message "Air Bag ON" was displayed while the front passenger's side seat was unoccupied. The vehicle was taken to the dealer, where the calibration-learning error was corrected by preconditioning the empty seat and resetting the seat zero-value in the electronic control unit. The vehicle was repaired. The contact related the failure to NHTSA Campaign Number: 15V465000 (Air Bags); however, the VIN was not included. The manufacturer was notified of the failure, but no assistance was provided because the VIN was not included in the recall. The failure mileage was unknown.
NHTSA ODI #11649202
Mileage unknown · Mar 10, 2025
Unknown Or Other
My transmission as well -
NHTSA ODI #11647518
238,000 miles · Mar 10, 2025
Electrical SystemService BrakesSteering
My steering wheel tripping , my brake light , my parking gear is triggered , stabilizing system and air bag
NHTSA ODI #11647517
100,000 miles · Feb 28, 2025
Steering
The contact owns a 2014 Chevrolet Impala. The contact stated that while his wife was driving at an undisclosed speed, the vehicle experienced a loss of power steering assist. The contact's wife was able to drive to the residence before the steering wheel seized. The "Service Power Steering, Drive with Care" messages were display…
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The contact owns a 2014 Chevrolet Impala. The contact stated that while his wife was driving at an undisclosed speed, the vehicle experienced a loss of power steering assist. The contact's wife was able to drive to the residence before the steering wheel seized. The "Service Power Steering, Drive with Care" messages were displayed. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.
NHTSA ODI #11645483
Mileage unknown · Jan 24, 2025
Steering
The contact owns a 2014 Chevrolet Impala The contact stated while driving at an undisclosed speed, the steering wheel seized, with the power steering warning light illuminated. The contact stated that the steering wheel became difficult to turn. The vehicle was taken to the dealer, where it was diagnosed and determined that the …
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The contact owns a 2014 Chevrolet Impala The contact stated while driving at an undisclosed speed, the steering wheel seized, with the power steering warning light illuminated. The contact stated that the steering wheel became difficult to turn. The vehicle was taken to the dealer, where it was diagnosed and determined that the steering column had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was not available.
NHTSA ODI #11638284
66,000 miles · Jan 23, 2025
Steering
The contact owns a 2014 Chevrolet Impala. The contact stated that while driving at an undisclosed speed, the contact became aware that the electronic power steering was not functioning properly, with the steering wheel being abnormally loose. The vehicle returned to normal functionality, but the failure became a regular occurren…
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The contact owns a 2014 Chevrolet Impala. The contact stated that while driving at an undisclosed speed, the contact became aware that the electronic power steering was not functioning properly, with the steering wheel being abnormally loose. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 14V450000 (Steering); but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was 66,000.
NHTSA ODI #11638129
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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