NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
697 reports7,809 miles · Apr 10, 2018
Electrical SystemStructure
MY WIFE HAS ALZHEIMER'S CAN'T STAND UP OR WALK SO CAN'T PUT HER IN THE BACK SEAT . DOOR OPENING IS TO SMALL. WE WERE ON THE INTERSTATE RUNNING 70 MPH AND SHE PULLS ON THE DOOR HANDLE TWICE AND THE DOOR OPENS DOOR. DID NOT KNOW THEY WERE HAVING THE DOORS TO OPEN WHEN THE HANDLE IS PULLED TWICE SHE ALMOST FELL BUT SEAT BELT SAV…
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MY WIFE HAS ALZHEIMER'S CAN'T STAND UP OR WALK SO CAN'T PUT HER IN THE BACK SEAT . DOOR OPENING IS TO SMALL. WE WERE ON THE INTERSTATE RUNNING 70 MPH AND SHE PULLS ON THE DOOR HANDLE TWICE AND THE DOOR OPENS DOOR. DID NOT KNOW THEY WERE HAVING THE DOORS TO OPEN WHEN THE HANDLE IS PULLED TWICE SHE ALMOST FELL BUT SEAT BELT SAVED HER. THEY NEED TO PUT A CHILD LOCK ON THIS DOOR ALSO.
NHTSA ODI #11084378
25,600 miles · Mar 8, 2018
Engine
TL* THE CONTACT OWNS A 2017 CHEVROLET VOLT. WHILE THE VEHICLE WAS STATIONARY, A HOLE FORMED IN THE EMISSIONS PIPE. THE CONTACT STATED THAT THE CHECK ENGINE INDICATOR ILLUMINATED. ALSO, THE EMISSIONS CONTROLS STOPPED WORKING AND FUEL WAS VAPORIZED. HERITAGE CHEVROLET BUICK OWINGS MILLS (11234 REISTERSTOWN RD, OWINGS MILLS, MD 211…
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TL* THE CONTACT OWNS A 2017 CHEVROLET VOLT. WHILE THE VEHICLE WAS STATIONARY, A HOLE FORMED IN THE EMISSIONS PIPE. THE CONTACT STATED THAT THE CHECK ENGINE INDICATOR ILLUMINATED. ALSO, THE EMISSIONS CONTROLS STOPPED WORKING AND FUEL WAS VAPORIZED. HERITAGE CHEVROLET BUICK OWINGS MILLS (11234 REISTERSTOWN RD, OWINGS MILLS, MD 21117) DIAGNOSED THAT THERE WAS A HOLE IN THE EVAPORATIVE EMISSIONS PIPE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 25,600.
NHTSA ODI #11076889
3,404 miles · Mar 2, 2018
Electrical SystemEngine
WHILE DRIVING TO THE DEALERSHIP TO GET MY CAR SERVICED FOR NEARLY STALLING AT A STOP LIGHT MY CAR ENGINE KEPT TURNING ON AND OFF AND REVVING UP AND DOWN RANDOMLY. I WAS IN ELECTRIC MODE AND THE ENGINE SHOULD NOT HAVE BEEN COMING ON. THE CAR'S SPEED RANDOMLY FLUCTUATED AS THE ENGINE RANDOMLY REVVED UP AND DOWN. I PULLED IN TO A G…
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WHILE DRIVING TO THE DEALERSHIP TO GET MY CAR SERVICED FOR NEARLY STALLING AT A STOP LIGHT MY CAR ENGINE KEPT TURNING ON AND OFF AND REVVING UP AND DOWN RANDOMLY. I WAS IN ELECTRIC MODE AND THE ENGINE SHOULD NOT HAVE BEEN COMING ON. THE CAR'S SPEED RANDOMLY FLUCTUATED AS THE ENGINE RANDOMLY REVVED UP AND DOWN. I PULLED IN TO A GROCERY STORE PARKING LOT WHERE MY CAR DIED. BEFORE DYING THE GAS RANGE INDICATOR CHANGED FROM 87 MILES TO 'LOW FUEL'. I CALLED THE DEALERSHIP TO HAVE MY CAR TOWED. AFTER 16 DAYS I GOT MY CAR BACK. THE DEALERSHIP REPLACED THE ENGINE CONTROL MODULE TWICE. THE FIRST REPLACEMENT FAILED WITHIN A 1 MILE TEST DRIVE BY THE MECHANIC.
NHTSA ODI #11075850
3,261 miles · Mar 2, 2018
Electrical System
WHILE DRIVING IN MY SON TO SCHOOL MY CHECK ENGINE LIGHT TURNED ON. FEARING MY CAR WOULD DIE WITH NO WARNING (LIKE HAD PREVIOUSLY OCCURRED) I WENT BACK TO MY HOUSE. I USED ONSTAR TO PULL THE ENGINE CODE OF U18A2 WHICH AFTER RESEARCHING ONLINE COULD RESULT IN 'LOSS OF PROPULSION' LIKE PREVIOUSLY OCCURRED. I CALLED THE DEALER AND H…
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WHILE DRIVING IN MY SON TO SCHOOL MY CHECK ENGINE LIGHT TURNED ON. FEARING MY CAR WOULD DIE WITH NO WARNING (LIKE HAD PREVIOUSLY OCCURRED) I WENT BACK TO MY HOUSE. I USED ONSTAR TO PULL THE ENGINE CODE OF U18A2 WHICH AFTER RESEARCHING ONLINE COULD RESULT IN 'LOSS OF PROPULSION' LIKE PREVIOUSLY OCCURRED. I CALLED THE DEALER AND HAD THE CAR TOWED FOR SERVICE. AFTER 15 DAYS I RECEIVED MY CAR BACK AND WAS TOLD IT WAS A LOOSE ELECTRICAL CONNECTOR SOMEWHERE.
NHTSA ODI #11075848
3,172 miles · Mar 2, 2018
Power Train
WHILE DRIVING MY 3 YEAR OLD SON TO SCHOOL MY VOLT LOST PROPULSION WHILE SLOWING DOWN FOR A RED LIGHT. THE CAR DISPLAYED A "LOSS OF PROPULSION" WARNING AND WITHIN 3 SECONDS MY CAR HAD NO POWER AND WAS DEAD IN THE ROAD. THE VOLT IS A HYBRID AND IT LOST PROPULSION WHILE IN ELECTRIC MODE. AFTER THE CAR STOPPED I TRIED TURNING IT OFF…
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WHILE DRIVING MY 3 YEAR OLD SON TO SCHOOL MY VOLT LOST PROPULSION WHILE SLOWING DOWN FOR A RED LIGHT. THE CAR DISPLAYED A "LOSS OF PROPULSION" WARNING AND WITHIN 3 SECONDS MY CAR HAD NO POWER AND WAS DEAD IN THE ROAD. THE VOLT IS A HYBRID AND IT LOST PROPULSION WHILE IN ELECTRIC MODE. AFTER THE CAR STOPPED I TRIED TURNING IT OFF AND ON AND I TRIED TO FORCE IT TO RUN IN GAS ENGINE MODE BUT NOTHING WORKED. MY CAR WAS TOWED TO A CHEVY DEALERSHIP WHERE IT TOOK 31 DAYS TO DIAGNOSE AND REPAIR. GM WAS CALLED IN TO HELP DIAGNOSE THE PROBLEM AND THEY TOLD THE DEALERSHIP TO REPLACE THE ENTIRE TRANSMISSION. IN THE VOLT THE TRANSMISSION ALSO CONTAINS TWO DRIVE MOTORS.
NHTSA ODI #11075846
3,500 miles · Mar 2, 2018
Service Brakes
WHILE APPROACHING A RED LIGHT AT 35MPH ON A SMOOTH ROAD WHEN I PRESSED MY BRAKE PEDAL NOTHING HAPPENED FOR NEARLY A SECOND THEN THE BRAKES WORKED AS USUAL. LUCKILY NO ONE WAS IN FRONT OF ME OR I COULD OF EASILY BEEN IN A CRASH. THE VOLT HAS A BRAKE-BY-WIRE SYSTEM WITH REGENERATIVE BRAKING. I FEEL THAT EITHER THE REGENERATIVE BRA…
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WHILE APPROACHING A RED LIGHT AT 35MPH ON A SMOOTH ROAD WHEN I PRESSED MY BRAKE PEDAL NOTHING HAPPENED FOR NEARLY A SECOND THEN THE BRAKES WORKED AS USUAL. LUCKILY NO ONE WAS IN FRONT OF ME OR I COULD OF EASILY BEEN IN A CRASH. THE VOLT HAS A BRAKE-BY-WIRE SYSTEM WITH REGENERATIVE BRAKING. I FEEL THAT EITHER THE REGENERATIVE BRAKING FAILED AND THE COMPUTER TOOK A LONG TIME TO REVERT TO THE FRICTION BRAKES OR THE BRAKE MODULE TEMPORARY FAILED AND NEITHER REGEN OR FRICTION BRAKES WERE AVAILABLE. I'VE DRIVEN A FIRST YEAR LEAF WHERE SOMETIMES THERE IS A SLIGHT DELAY WHEN SWITCHING TO FRICTION BRAKES IN CERTAIN SITUATIONS, AND THIS EVENT WAS MUCH MUCH WORSE THAN THAT. ROAD AND WEATHER CONDITIONS WERE PERFECT THAT DAY.
NHTSA ODI #11075843
1,000 miles · Feb 22, 2018
Power Train
NHTSA ID NUMBER: 10113301: WHILE DRIVING 1 MONTH OLD CAR WITH 1000 MILES ON FREEWAY, CAR SUDDENLY STALLED. THIS CREATED A DANGEROUS SITUATION AS I WAS ALMOST REAR-ENDED AND HAD TO CROSS SEVERAL LANES OF TRAFFIC WITH NO PROPULSION. GM ACKNOWLEDGED THIS AS AN ISSUE IN JANUARY 2017 AND AGAIN IN OCTOBER 2017 WITH REVISED NHTSA ID N…
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NHTSA ID NUMBER: 10113301: WHILE DRIVING 1 MONTH OLD CAR WITH 1000 MILES ON FREEWAY, CAR SUDDENLY STALLED. THIS CREATED A DANGEROUS SITUATION AS I WAS ALMOST REAR-ENDED AND HAD TO CROSS SEVERAL LANES OF TRAFFIC WITH NO PROPULSION. GM ACKNOWLEDGED THIS AS AN ISSUE IN JANUARY 2017 AND AGAIN IN OCTOBER 2017 WITH REVISED NHTSA ID NUMBER: 10123263. WHY IS GM ALLOWED TO CONTINUE TO SELL THESE VEHICLES WITH SUCH A DANGEROUS ISSUE WITHOUT REPAIRING THEM PRIOR TO SELLING TO AN UNKNOWING CONSUMER? THEY COMMITTED FRAUD, NEGLIGENCE, AND MISREPRESENTED THEIR PRODUCT WHEN KNOWINGLY SOLD A DEFECTIVE PRODUCT. THE DEALER REFUSES TO TAKE THE VEHICLE BACK AND TO REFUND ANY MONEY PAID.
NHTSA ODI #11074368
Mileage unknown · Jan 10, 2018
Service Brakes
THE BRAKE PEDAL AND GAS PEDAL BOTH MODULATE PRESSURE NEEDED TO EITHER ACCELERATE OR BRAKE. THE BRAKE PEDAL WILL CHANGE PRESSURE NEEDED TO BRAKE SUDDENLY, CAUSING YOU TO APPLY MUCH MORE FORCE TO BRAKE PEDAL, WHICH IS UNEXPECTED AND DANGEROUS. FOR EXAMPLE, WHEN DRIVING AT HIGHWAY SPEED, A CAR IN FRONT OF YOU STOPS, AND YOU APPLY B…
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THE BRAKE PEDAL AND GAS PEDAL BOTH MODULATE PRESSURE NEEDED TO EITHER ACCELERATE OR BRAKE. THE BRAKE PEDAL WILL CHANGE PRESSURE NEEDED TO BRAKE SUDDENLY, CAUSING YOU TO APPLY MUCH MORE FORCE TO BRAKE PEDAL, WHICH IS UNEXPECTED AND DANGEROUS. FOR EXAMPLE, WHEN DRIVING AT HIGHWAY SPEED, A CAR IN FRONT OF YOU STOPS, AND YOU APPLY BRAKES. TRAFFIC CLEARS AND YOU RELEASE BRAKES, BUT THEN CAR IN FRONT STOPS AGAIN AND REQUIRES YOU TO BRAKE AGAIN SUDDENLY. THIS TIME THE BRAKE PEDAL WILL REQUIRE MORE PRESSURE AND PEDAL TRAVEL IS SIGNIFICANTLY MORE. THIS IS UNSAFE AND NEEDS TO BE CHANGED.
NHTSA ODI #11062010
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
10,000 miles · Dec 21, 2017
Unknown Or OtherVehicle Speed ControlCrash
I PURCHASED A NEW 2017 CHEVROLET VOLT EQUIPMENT WITH AUTOMATIC PARKING ASSIST. ON NOVEMBER 1, 2017, I WAS DRIVING ON BATH STREET IN SANTA BARBARA. I DECIDED TO PARK ON BATH AT PUEBLO STREET. THE FIRST TIME, I ENGAGED THE APA FEATURE TO ASSIST WITH PARALLEL PARKING, I FOLLOWED THE INSTRUCTIONS ON THE DASHBOARD. AFTER COMING …
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I PURCHASED A NEW 2017 CHEVROLET VOLT EQUIPMENT WITH AUTOMATIC PARKING ASSIST. ON NOVEMBER 1, 2017, I WAS DRIVING ON BATH STREET IN SANTA BARBARA. I DECIDED TO PARK ON BATH AT PUEBLO STREET. THE FIRST TIME, I ENGAGED THE APA FEATURE TO ASSIST WITH PARALLEL PARKING, I FOLLOWED THE INSTRUCTIONS ON THE DASHBOARD. AFTER COMING TO A COMPLETE STOP, I FOLLOWED THE DIRECTION TO SHIFT THE CAR INTO REVERSE. THE MOMENT I COMPLETED THE SHIFT AND I LIFTED BY FOOT FROM THE BRAKE, THE VEHICLE ACCELERATED UNEXPECTEDLY IN REVERSE AT A HIGH RATE OF SPEED. THE STEERING WHEEL TURNED TO THE RIGHT, AND THE CAR CONTINUED TO ACCELERATE OUT OF CONTROL UNTIL IT HAD JUMPED THE CURB AND SIDESWIPED A TELEPHONE POLE. I HAD THE VEHICLE TOWED TO A CHEVY DEALER AND FILED A CLAIM FOR PRODUCT DEFECT WITH GENERAL MOTORS. GENERAL MOTORS HAS SUBSEQUENTLY DECLINED THE CLAIM.
NHTSA ODI #11055902
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.