NHTSA owner reports · September 18, 2026 snapshot.
Electronic Stability Control (esc) complaints
9 reportsClear category filter50,000 miles · Oct 15, 2020
Electrical SystemElectronic Stability Control (esc)
UPON STARTING THE CAR (AFTER SITTING IN THE SUN WITH WINDOWS UP, SO HOT CABIN), WHEN I SHIFT TO ANY GEAR OUT OF PARK, I GET AN ACTION REQUIRED SHIFT TO PARK MESSAGE. THE SHIFTER WILL GO TO DRIVE, FOR EXAMPLE, BUT PRESSING THE GAS PEDAL DOES NOT MOVE THE CAR, AND I HAVE THE MESSAGE TO SHIFT TO PARK. THIS HAS HAPPENED TWICE. BOTH…
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UPON STARTING THE CAR (AFTER SITTING IN THE SUN WITH WINDOWS UP, SO HOT CABIN), WHEN I SHIFT TO ANY GEAR OUT OF PARK, I GET AN ACTION REQUIRED SHIFT TO PARK MESSAGE. THE SHIFTER WILL GO TO DRIVE, FOR EXAMPLE, BUT PRESSING THE GAS PEDAL DOES NOT MOVE THE CAR, AND I HAVE THE MESSAGE TO SHIFT TO PARK. THIS HAS HAPPENED TWICE. BOTH TIMES I ROLLED DOWN WINDOWS, AND TRIED TURNING THE CAR OFF AND BACK ON AGAIN TO RESOLVE THIS. AFTER SEVERAL ROUNDS OF THIS, THE CAR DID SHIFT TO DRIVE AND WOULD GO. HOWEVER THE ENGINE IS RUNNING (RATHER THAN ONLY ELECTRIC, AS I USUALLY OPERATE); THE BATTERY GAGE IN CLASSICAL MODE SHOWS A RAPIDLY DECREASING CHARGE, THEN INCREASING, THEN DECREASING - ALSO THE PLACE WHERE IT SHOWS HOW MANY MILES LEFT IN BATTERY IS GREYED OUT AT 0, EVEN THOUGH THE BATTERY MAY APPEAR TO BE CHARGED MORE THAN HALF. ALSO, WHEN TRYING TO SHIFT MODES, HOLD MODE IS GRAYED OUT AND I CANNOT ACTIVATE IT. ONCE I ARRIVE AT MY DESTINATION AND TURN THE CAR OFF, PLUG IT IN, NEXT TIME IT TURNS ON AS NORMAL. CHECK ENGINE LIGHT IS ON FOR ALL THIS, AND DOES NOT TURN OFF WHEN RESTARTING A FULLY CHARGED BATTERY THE NEXT DAY.
NHTSA ODI #11364455
47,000 miles · Oct 15, 2020
Electrical SystemElectronic Stability Control (esc)
WHEN I PARK MY CAR, I SHIFT IT INTO PARK AND PRESS THE BUTTON TO TURN THE CAR OFF. HOWEVER I THEN GET A MESSAGE ON THE DASH: ACTION REQUIRED SHIFT TO PARK. BUT IT'S ALREADY IN PARK & I CANNOT SHUT OFF THE CAR.
NHTSA ODI #11364449
15,000 miles · Jan 1, 2020
Electronic Stability Control (esc)Service BrakesVehicle Speed Control
WHILE DRIVING ON CITY STREETS AND HIGHWAYS, THE ADAPTIVE CRUISE CONTROL WILL NOT ENGAGE 25% OF THE TIME AND WILL DISENGAGE WITHOUT NOTICE. "ADAPTIVE CRUISE CONTROL WILL APPEAR IN DIC. HOWEVER, THIS CREATES A SAFETY HAZARD AS YOU NEVER KNOW IF THE CAR WILL AUTOMATICALLY SLOW DOWN. I HAVE FILED CASE # 9-5379585813 WITH CHEVROLE…
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WHILE DRIVING ON CITY STREETS AND HIGHWAYS, THE ADAPTIVE CRUISE CONTROL WILL NOT ENGAGE 25% OF THE TIME AND WILL DISENGAGE WITHOUT NOTICE. "ADAPTIVE CRUISE CONTROL WILL APPEAR IN DIC. HOWEVER, THIS CREATES A SAFETY HAZARD AS YOU NEVER KNOW IF THE CAR WILL AUTOMATICALLY SLOW DOWN. I HAVE FILED CASE # 9-5379585813 WITH CHEVROLET AND BEEN TO FOUR DEALERS AND THEY REFUSE TO FIX THE PROBLEM. THEY NO LONGER RETURN MY CALLS. I AM AFRAID TO USE THE CRUISE CONTROL.
NHTSA ODI #11292386
42,217 miles · May 16, 2019
Electrical SystemElectronic Stability Control (esc)Fuel/propulsion System
TAKATA RECALL CHEVY VOLT'S DEFECTIVE HM1 MODULE AND FAILED NEEDS TO BE REPLACED AFTER 2 YEARS ON 2017 VOLT NOT COVERED BY OWNERS WARRANTY 3 YRS OR 36 K MILES. VEHICLE WARRANTY EXPIRED WITH 42 K MILES. REPLACEMENT COAT IS $600+ AND INSTALLATION COST $660. TOTAL $1,260. SAFETY ISSUES AS THIS IS THE MAIN MODULE TO CONTROL ALL OTH…
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TAKATA RECALL CHEVY VOLT'S DEFECTIVE HM1 MODULE AND FAILED NEEDS TO BE REPLACED AFTER 2 YEARS ON 2017 VOLT NOT COVERED BY OWNERS WARRANTY 3 YRS OR 36 K MILES. VEHICLE WARRANTY EXPIRED WITH 42 K MILES. REPLACEMENT COAT IS $600+ AND INSTALLATION COST $660. TOTAL $1,260. SAFETY ISSUES AS THIS IS THE MAIN MODULE TO CONTROL ALL OTHER MODULES AS BACK UP CAMERA, GPS, ELECTRICAL SETTINGS AND ELECTRICAL CHARGING SETTINGS AS RATE CAN NOT BE VIEWED AS INFO SCREEN IS TOTALLY BLANK. IN ADDITION ALL OTHER FUNCTIONS TO OTHER ITEMS DISPLAYED ARE BLANK ON SCREEN. REPLACEMENT MODULE IS BACK ORDERED.
NHTSA ODI #11208002
25,000 miles · Apr 15, 2019
Electronic Stability Control (esc)Fuel/propulsion SystemSteering
THE TROUBLE BEGAN ON MARCH 16TH, I CAME TO A STOP AT A LIGHT, READY TO TAKE A U TURN.DRIVING IN EV MODE. ALL LIGHTS IN THE CONSOLE TURNED ON AND I GOT THREE ERRORS "INFORMATION : PROPULSION POWER IS REDUCED" "SERVICE : STABILITRAK" "SERVICE : POWER STEERING. DRIVE WITH CARE" THE POWER STEERING GAVE UP.RESTARTED THE CAR AFTER…
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THE TROUBLE BEGAN ON MARCH 16TH, I CAME TO A STOP AT A LIGHT, READY TO TAKE A U TURN.DRIVING IN EV MODE. ALL LIGHTS IN THE CONSOLE TURNED ON AND I GOT THREE ERRORS "INFORMATION : PROPULSION POWER IS REDUCED" "SERVICE : STABILITRAK" "SERVICE : POWER STEERING. DRIVE WITH CARE" THE POWER STEERING GAVE UP.RESTARTED THE CAR AFTER 5MINS, EVERYTHING WAS NORMAL. ON MARCH 24TH, ON A HIGHWAY , IN HOLD MODE. AFTER A FEW MILES IN, I GOT AN ERROR "ACTION REQUIRED: ENGINE OVERHEATING REDUCE SPEED" TOOK THE NEXT EXIT OUT AND SAW THAT THE COOLANT TANK IS EMPTY. TURNED ON EV MODE , DROVE BACK HOME. ON MARCH 25TH MORNING, TOOK THE CAR IN TO SERVICE CENTER (DRIVE-IN). THEY IDENTIFIED A VALVE LEAKING IN THE COOLANT LOOP. REPLACED THE PART. MULTI-POINT INSPECTION DONE. 2 PENDING RECALLS DONE. GOT THE CAR BACK ON 26TH. ON MARCH 28TH, AT A LIGHT, ABOUT TAKE A LEFT TURN, DRIVING IN EV MODE. AGAIN, ALL LIGHTS IN THE CONSOLE TURNED ON AND I GOT THE SAME 3 ERRORS.I TOOK IT HOME. ON MARCH 29TH MORNING, TOOK THE CAR IN TO THE SERVICE CENTER AGAIN. THEY FOUND ANOTHER LEAK IN THE COOLANT, A HOSE THIS TIME AND REPLACED IT. THEY FOUND PASSENGER SIDE FRONT AXLE IS SPILLING GEESE AND REPLACED IT. GOT THE CAR BACK ON APRIL 3RD. ON APRIL 4TH EVENING, THE CAR GAVE ME A CHECK ENGINE LIGHT AGAIN. GOT AN APPOINTMENT FOR 5TH MORNING, THE LIGHT WAS OFF ON THE MORNING. I SPOKE TO THE SERVICE ADVISER AND HE MENTIONED THAT WE CAN READ THE CODES BUT WONT BE OF MUCH HELP IF THE LIGHTS ARE OFF AND BRING IT BACK IN IF THE LIGHTS ON AGAIN. ON APRIL 5TH AFTERNOON, JUST GOT ON THE HIGHWAY, TURNED ON HOLD MODE. AGAIN, ALL LIGHTS IN THE CONSOLE TURNED ON AND I GOT SAME THREE ERRORS. I TOOK IT TO THE SERVICE CENTER. WITH ALL THE LIGHTS ON. I GOT IT BACK ON TUSDAY 9TH. ON APRIL 12TH EVENING, IT HAPPENED AGAIN ON THE FREEWAY, I ALMOST CRASHED INTO ANOTHER CAR. I GAVE THE CAR IN AGAIN.
NHTSA ODI #11196493
21,000 miles · Feb 17, 2019
Electrical SystemElectronic Stability Control (esc)Engine
ON MULTIPLE OCCASIONS (INCLUDING AFTER ALLEGED REPAIR), THE VEHICLE REQUESTED TO BE PLACED IN PARK WHILE MOVING. ON TWO OCCASIONS WHEN PLACED IN PARK THE VEHICLE SHIFT LOCK ENGAGED AND COULD NOT BE SHIFTED OUT OF PARK. ON ONE OCCASION THE VEHICLE SURGED WHILE DRIVING PRIOR TO REQUESTING TO BE PLACED IN PARK. ON ALL OCCURRENCE…
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ON MULTIPLE OCCASIONS (INCLUDING AFTER ALLEGED REPAIR), THE VEHICLE REQUESTED TO BE PLACED IN PARK WHILE MOVING. ON TWO OCCASIONS WHEN PLACED IN PARK THE VEHICLE SHIFT LOCK ENGAGED AND COULD NOT BE SHIFTED OUT OF PARK. ON ONE OCCASION THE VEHICLE SURGED WHILE DRIVING PRIOR TO REQUESTING TO BE PLACED IN PARK. ON ALL OCCURRENCES, THE VEHICLE WOULD NOT SHUT DOWN AND ENTERED A CONTINUOUS REBOOT CYCLE WHEN THE START/STOP BUTTON WAS PRESSED, INCLUDING WHEN TOWED.
NHTSA ODI #11180635
13,500 miles · Jan 3, 2018
Electrical SystemElectronic Stability Control (esc)Steering
VEHICLE'S LANE DEPARTURE FUNCTION AND CALIBRATION WAS REPROGRAMMED AFTER A RECALL SERVICE AND NOT FUNCTION DOES NOT WORK. FUNCTION WAS NOT ONLY A PREMIUM CHARGE OPTION, BUT ORIGINALLY WOULD MONITOR THE LANE LINES AND ADJUST THE ELECTRONIC STEERING SYSTEM TO KEEP THE VEHICLE WELL WITHIN THE ROAD LANES' PAINTED LINES. NOW, THE…
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VEHICLE'S LANE DEPARTURE FUNCTION AND CALIBRATION WAS REPROGRAMMED AFTER A RECALL SERVICE AND NOT FUNCTION DOES NOT WORK. FUNCTION WAS NOT ONLY A PREMIUM CHARGE OPTION, BUT ORIGINALLY WOULD MONITOR THE LANE LINES AND ADJUST THE ELECTRONIC STEERING SYSTEM TO KEEP THE VEHICLE WELL WITHIN THE ROAD LANES' PAINTED LINES. NOW, THE VEHICLE WILL (MORE TIMES THAN NOT) COMPLETELY CROSS THE TIRES WELL OVER THE PAINTED LINE, TRAVELING SEVERAL TENS OF YARDS BEFORE ONLY SLIGHTLY CORRECTING ITS DIRECTION BACK TOWARDS THE LANE. IN A BEST CASE SCENARIO, VEHICLE SYSTEM WILL BEGIN CORRECTING ITSELF APPROXIMATELY JUST AS THE FRONT TIRE MAKES CONTACT WITH THE LANE BOUNDARY LINES. THIS HAS BEEN OBSERVED IN LANES OF VARYING WIDTH AND CONFIRMED BY THE SERVICING DEALERSHIP. FURTHER, SYSTEM IS INCONSISTENT IN ITS DETERMINATION AND "CORRECTION" LANE BOUNDARIES, SOMETIMES CROSSING THE LEFT LANE LINE ENTIRELY THEN BARELY TOUCHING THE RIDE SIDE LANE, OR VICE VERSA. SYSTEM HAS ALSO BEEN APPARENTLY LESS SENSITIVE IN READING THE LINES AS THE INSTRUMENT PANEL INDICATOR WILL NOT LIGHT UP INDICATING THAT IT RECOGNIZES LANES, EVEN THOUGH LANES ARE CLEARLY AND BRIGHTLY PAINTED AND ILLUMINATED BY EITHER HEADLIGHTS, STREET LIGHTS OR SUNLIGHT. AS THIS VEHICLE IS A COMPLETE DRIVE-BY-WIRE SYSTEM (BRAKES, STEERING, AND THROTTLE HAVE NO MECHANICAL CONNECTION TO DRIVER'S INPUTS), I HAVE SERIOUS CONCERNS WITH REGARDS TO THE SENSORS CAPABILITIES IN ACCIDENT AVOIDANCE AND FEEL THAT IN AN EMERGENCY SITUATION, THE SYSTEM WILL FAIL TO OPERATE AS PROMOTED AND PROMISED BY THE MANUFACTURE. THIS WOULD BE ACCEPTABLE IF THIS PERFORMANCE WAS SIMILAR OR CONSISTENT TO PERFORMANCE FROM INITIAL OPERATION, HOWEVER, THE OEM HAS EFFECTIVELY AND DRAMATICALLY CHANGING THE VEHICLE'S DRIVING DYNAMIC AND SAFETY FUNCTION THAT I (AND ANY REASONABLE DRIVER) HAVE BECOME COMFORTABLE WITH AS A DRIVER, WITHOUT MY CONSENT.
NHTSA ODI #11058332
4,000 miles · Jan 11, 2017
Electronic Stability Control (esc)EngineFuel/propulsion System
WE ARE WRITING TO VOICE A VERY DISCONCERTING AND DANGEROUS INCIDENT WITH OUR 2017 CHEVY VOLT. ON A RETURN TRIP AT DARK FROM CLEVELAND, OHIO TO ROCHESTER, NY ON 12-26-16, OUR ENGINE SUDDENLY GAVE WARNING BEEPS WHICH PROMPTED MY HUSBAND TO PULL OVER TO THE SHOULDER ON INTERSTATE 90 IN ERIE, PA. WE HAD ALL OF 15-20 SECONDS TO GE…
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WE ARE WRITING TO VOICE A VERY DISCONCERTING AND DANGEROUS INCIDENT WITH OUR 2017 CHEVY VOLT. ON A RETURN TRIP AT DARK FROM CLEVELAND, OHIO TO ROCHESTER, NY ON 12-26-16, OUR ENGINE SUDDENLY GAVE WARNING BEEPS WHICH PROMPTED MY HUSBAND TO PULL OVER TO THE SHOULDER ON INTERSTATE 90 IN ERIE, PA. WE HAD ALL OF 15-20 SECONDS TO GET OFF THIS HEAVILY TRAFFICKED HIGHWAY WHEN THE CAR LITERALLY SHUT DOWN.. NOTHING WORKED NOT EVEN THE WARNING FLASHERS. WE COULD NOT OPEN THE TRUNK, AND HAD WE NOT KEPT ONE DOOR OPEN WE WOULD NOT HAVE BEEN ABLE TO ENTER THE CAR. IN SUMMARY, THE TOTAL FAILURE WE ENCOUNTERED SHOWS THE SERIOUS SAFETY ISSUE RELATED TO THIS CAR. WE ARE NOW RELUCTANT TO TAKE IT ON TRIPS THIS INCIDENT COULD HAVE RESULTED IN A SERIOUS ACCIDENT HAD WE NOT BEEN ABLE TO PULL OFF ONTO THE SHOULDER.
NHTSA ODI #10944472
135 miles · Apr 3, 2016
Electrical SystemElectronic Stability Control (esc)Engine
2017 CHEVROLET VOLT EXTREME ENGINE HAZARD: ON 22-MAR-2016 I PURCHASED A 2017 CHEVROLET VOLT PREMIER, ALL SAFETY OPTIONS. DRIVING ON FREEWAY AT 65 MPH, STRAIGHT DRIVING, RELATIVELY LIGHT TRAFFIC, THE ENGINE LIGHT CAME ON YELLOW AND STEADY (EMISSIONS SYSTEM SERVICE WARNING) BUT THE CAR UNCONTROLLABLY DECELERATED. THE FREEWAY HAD N…
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2017 CHEVROLET VOLT EXTREME ENGINE HAZARD: ON 22-MAR-2016 I PURCHASED A 2017 CHEVROLET VOLT PREMIER, ALL SAFETY OPTIONS. DRIVING ON FREEWAY AT 65 MPH, STRAIGHT DRIVING, RELATIVELY LIGHT TRAFFIC, THE ENGINE LIGHT CAME ON YELLOW AND STEADY (EMISSIONS SYSTEM SERVICE WARNING) BUT THE CAR UNCONTROLLABLY DECELERATED. THE FREEWAY HAD NO SHOULDER DUE TO CONSTRUCTION. THE CAR SMELLED OF BURNING ELECTRICAL INSULATION CONFIRMED BY THE TOW TRUCK DRIVER. THE CAR, WITH LESS THAN 150 TOTAL MILES, IN CLEAR WEATHER, AT TWILIGHT, 76 DEGREES, CALIFORNIA AT SEA LEVEL, STRAIGHTAWAY, HAD A SUDDEN AND NEAR TOTAL LOSS OF ALL PROPULSION. THIS CAUSED A LACK OF CONTROL (OBVIOUSLY) IN THE FORWARD DIRECTION, CAUSING AN EXTREME HAZARD ON THE FREEWAY. I AM AN EXPERIENCED DRIVER: MAKE NO MISTAKE, THIS WAS A SERIOUS MANUFACTURE'S ERROR. I CHECKED, NO PARKING BRAKE, THE CAR WAS IN DRIVE GEAR, I HAD BOTH ELECTRIC RANGE AND OVER 7/8 TANK OF GAS SHOWING A GAS RANGE OF 360 MILES - AND I HAD JUST DRIVEN 60 MILES. THERE WAS NO BRAKE SMELL, AS I DID NOT NEED TO APPLY THE BRAKE BECAUSE THE ENGINE GAVE NO PROPULSION. MY HAND WAS OFF THE REGEN SWITCH. THE CAR HAD A MAJOR MALFUNCTION CAUSING AN EXTREME HAZARD, AND BASED ON THE SMELL, POSSIBLE FIRE HAZARD.
NHTSA ODI #10853130
NHTSA investigations
2PE23022 · Loss Of Motive Power Due To The Battery Energy Control Module
Opened Nov 29, 2023 · Closed Mar 3, 2025
Status: closed (inferred from source dates) · Electrical System; Electrical System:propulsion System; Electrical System:propulsion System:traction Battery:management System/energy Control Module (bms/becm)
On November 29, 2023, the Office of Defects Investigations (ODI) opened PE23022 to investigate allegations of a loss of motive power, including a stall, reduced power state, and/or a no start condition due to the Battery Energy Control Module (BECM) in model year (MY) 2016-2019 Chevrolet Volt passenger car vehicles manufactured by General Motors (GM). The BECM is located within the high voltage electric vehicle (EV) battery pack and monitors the temperature, current, and voltage of the high voltage battery cell groups. GM stated that the root cause was identified as an internal failure leading to a loss of communication within the BECM and does not pose a risk to motor vehicle safety. GM further stated that the failure cannot result in a complete stall, only a reduced power mode, no start condition, or a no charge condition. GM additionally stated that if these conditions occur, the driver will be warned via a Malfunction Indicator Lamp (MIL) and/or a reduced-propulsion message in the Driver Information Center (DIC). Data received and analyzed by ODI from all sources indicates that nearly all related BECM failures caused conditions aligning with GM’s predicted outcomes. Despite the large number of warranty claims, nearly all failures were not safety-related, i.e., not a stall or reduced power mode. ODI isaware of a single minor crash and no injuries or deaths. In March 2024, GM issued Special Coverage N232432680, which was mailed to consumers, addressing BECM failures in certain MY 2016-2018 Chevrolet Volt vehicles. This special coverage provides an extension of the warranty coverage for the BECM from 8 years / 100,000 miles to 15 years / 150,000 miles for all 2016-2018 Chevrolet Volts. Additionally, GM stated that replacement components are sourced from a different supplier and not susceptible to the failure. In view of the Special Coverage issued by GM, the existing warranty coverage already in place, and the low number of safety-related occurrences, ODI is closing this Preliminary Evaluation (PE). The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
Additional source detail variants (3)
Electrical System
On November 29, 2023, the Office of Defects Investigations (ODI) opened PE23022 to investigate allegations of a loss of motive power, including a stall, reduced power state, and/or a no start condition due to the Battery Energy Control Module (BECM) in model year (MY) 2016-2019 Chevrolet Volt passenger car vehicles manufactured by General Motors (GM). The BECM is located within the high voltage electric vehicle (EV) battery pack and monitors the temperature, current, and voltage of the high voltage battery cell groups. GM stated that the root cause was identified as an internal failure leading to a loss of communication within the BECM and does not pose a risk to motor vehicle safety. GM further stated that the failure cannot result in a complete stall, only a reduced power mode, no start condition, or a no charge condition. GM additionally stated that if these conditions occur, the driver will be warned via a Malfunction Indicator Lamp (MIL) and/or a reduced-propulsion message in the Driver Information Center (DIC). Data received and analyzed by ODI from all sources indicates that nearly all related BECM failures caused conditions aligning with GM’s predicted outcomes. Despite the large number of warranty claims, nearly all failures were not safety-related, i.e., not a stall or reduced power mode. ODI isaware of a single minor crash and no injuries or deaths. In March 2024, GM issued Special Coverage N232432680, which was mailed to consumers, addressing BECM failures in certain MY 2016-2018 Chevrolet Volt vehicles. This special coverage provides an extension of the warranty coverage for the BECM from 8 years / 100,000 miles to 15 years / 150,000 miles for all 2016-2018 Chevrolet Volts. Additionally, GM stated that replacement components are sourced from a different supplier and not susceptible to the failure. In view of the Special Coverage issued by GM, the existing warranty coverage already in place, and the low number of safety-related occurrences, ODI is closing this Preliminary Evaluation (PE). The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
Electrical System:propulsion System
On November 29, 2023, the Office of Defects Investigations (ODI) opened PE23022 to investigate allegations of a loss of motive power, including a stall, reduced power state, and/or a no start condition due to the Battery Energy Control Module (BECM) in model year (MY) 2016-2019 Chevrolet Volt passenger car vehicles manufactured by General Motors (GM). The BECM is located within the high voltage electric vehicle (EV) battery pack and monitors the temperature, current, and voltage of the high voltage battery cell groups. GM stated that the root cause was identified as an internal failure leading to a loss of communication within the BECM and does not pose a risk to motor vehicle safety. GM further stated that the failure cannot result in a complete stall, only a reduced power mode, no start condition, or a no charge condition. GM additionally stated that if these conditions occur, the driver will be warned via a Malfunction Indicator Lamp (MIL) and/or a reduced-propulsion message in the Driver Information Center (DIC). Data received and analyzed by ODI from all sources indicates that nearly all related BECM failures caused conditions aligning with GM’s predicted outcomes. Despite the large number of warranty claims, nearly all failures were not safety-related, i.e., not a stall or reduced power mode. ODI isaware of a single minor crash and no injuries or deaths. In March 2024, GM issued Special Coverage N232432680, which was mailed to consumers, addressing BECM failures in certain MY 2016-2018 Chevrolet Volt vehicles. This special coverage provides an extension of the warranty coverage for the BECM from 8 years / 100,000 miles to 15 years / 150,000 miles for all 2016-2018 Chevrolet Volts. Additionally, GM stated that replacement components are sourced from a different supplier and not susceptible to the failure. In view of the Special Coverage issued by GM, the existing warranty coverage already in place, and the low number of safety-related occurrences, ODI is closing this Preliminary Evaluation (PE). The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
Electrical System:propulsion System:traction Battery:management System/energy Control Module (bms/becm)
On November 29, 2023, the Office of Defects Investigations (ODI) opened PE23022 to investigate allegations of a loss of motive power, including a stall, reduced power state, and/or a no start condition due to the Battery Energy Control Module (BECM) in model year (MY) 2016-2019 Chevrolet Volt passenger car vehicles manufactured by General Motors (GM). The BECM is located within the high voltage electric vehicle (EV) battery pack and monitors the temperature, current, and voltage of the high voltage battery cell groups. GM stated that the root cause was identified as an internal failure leading to a loss of communication within the BECM and does not pose a risk to motor vehicle safety. GM further stated that the failure cannot result in a complete stall, only a reduced power mode, no start condition, or a no charge condition. GM additionally stated that if these conditions occur, the driver will be warned via a Malfunction Indicator Lamp (MIL) and/or a reduced-propulsion message in the Driver Information Center (DIC). Data received and analyzed by ODI from all sources indicates that nearly all related BECM failures caused conditions aligning with GM’s predicted outcomes. Despite the large number of warranty claims, nearly all failures were not safety-related, i.e., not a stall or reduced power mode. ODI isaware of a single minor crash and no injuries or deaths. In March 2024, GM issued Special Coverage N232432680, which was mailed to consumers, addressing BECM failures in certain MY 2016-2018 Chevrolet Volt vehicles. This special coverage provides an extension of the warranty coverage for the BECM from 8 years / 100,000 miles to 15 years / 150,000 miles for all 2016-2018 Chevrolet Volts. Additionally, GM stated that replacement components are sourced from a different supplier and not susceptible to the failure. In view of the Special Coverage issued by GM, the existing warranty coverage already in place, and the low number of safety-related occurrences, ODI is closing this Preliminary Evaluation (PE). The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
DP22005 · Pedestrian Alert Sounds
Opened Jan 27, 2023 · Closed Aug 7, 2023
Status: closed (inferred from source dates) · Electrical System:propulsion System
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.