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2013 Chevrolet Volt

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2013 Chevrolet Volt do not stand out strongly from the model-year median of 169.

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When problems were reported

Mileage at the reported incident

213 reports with mileage · 95 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Air Bags. Review the 161 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 63 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel/propulsion System. Review the 53 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

8 crash reports2 fire reports7 injury reports

Power Train complaints

24 reports
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44,165 miles · Jan 10, 2019
Electrical SystemEnginePower Train

MY 2013 VOLT HAS STARTED GIVING ME ONLY A MAXIMUM OF 35 MILES CHARGE, BUT REALLY ONLY GIVING ME 27-32 EVEN THROUGH I DRIVE IN LOW (WHICH ALWAYS GAVE ME MORE MILES THAN THE CAR THOUGHT I'D GET). MAYBE THIS IS CONNECTED TO THE NEW PROBLEM? YESTERDAY WHEN I TURNED ON THE CAR (DRIVING IN GAS BECAUSE I HAD RUN OUT OF ELECTRIC) IT…

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MY 2013 VOLT HAS STARTED GIVING ME ONLY A MAXIMUM OF 35 MILES CHARGE, BUT REALLY ONLY GIVING ME 27-32 EVEN THROUGH I DRIVE IN LOW (WHICH ALWAYS GAVE ME MORE MILES THAN THE CAR THOUGHT I'D GET). MAYBE THIS IS CONNECTED TO THE NEW PROBLEM? YESTERDAY WHEN I TURNED ON THE CAR (DRIVING IN GAS BECAUSE I HAD RUN OUT OF ELECTRIC) IT GAVE GAVE ME A "PROPULSION POWER REDUCED" ERROR MESSAGE. I TRIED TURNING IT OFF AND ON SEVERAL TIMES, BUT THE ERROR STAYED. I HAD TO DRIVE FROM DOWNTOWN LA IN A CAR THAT COULD BARELY MOVE. ABOUT 8 MILES IN, THE ERROR DISAPPEARED AND THE CAR RAN NORMALLY. THE DEALERSHIP TELLS ME THEY COULDN'T FIND ANY ERROR MESSAGES (?!), BUT MAYBE, MAYBE THAT PROBLEM AND THE CHARGING PROBLEM COULD BE CORRECTED BY A $300 SOFTWARE UPDATE. MAYBE. MEANTIME, I FOUND THAT SOME 2013 VOLTS WERE RECALLED FOR EXACTLY THIS ERROR PROBLEM, BUT APPARENTLY NOT MINE. THE DEALERSHIP DOESN'T SEEM TO BE INTERESTED IN FINDING OUT WHAT'S WRONG, AND GM SAYS TO GO TO THE DEALERSHIP (GM, IN FACT, HUNG UP ON MY TODAY). SO LET ME GET THIS STRAIGHT, GM, YOU KNOW YOU BUILT CARS WITH SOFTWARE PROBLEMS, BUT WE NEED TO PAY TO CORRECT THEM? AND YOU'RE NOT EVEN SURE IT WILL CORRECT IT??????

NHTSA ODI #11166247

37,000 miles · Sep 28, 2018
Fuel/propulsion SystemPower TrainVehicle Speed Control

VOLT HAS MINIMAL PROPULSION WHEN STOMPING ON THE ACCELERATOR IN ELECTRIC OR HYBRID MODE. IT HAS LOST 60-70 PERCENT OF ITS POWER SINCE NEW. IT IS A SAFETY HAZARD WHEN PULLING ONTO A HIGHWAY OR NEEDING TO ACCELERATE TO AVOID A ACCIDENT. CHEVROLET SAYS NOTHING IS WRONG AND REFUSES TO ACKNOWLEDGE THE ISSUE NOT WANTING TO HONOR ELEC…

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VOLT HAS MINIMAL PROPULSION WHEN STOMPING ON THE ACCELERATOR IN ELECTRIC OR HYBRID MODE. IT HAS LOST 60-70 PERCENT OF ITS POWER SINCE NEW. IT IS A SAFETY HAZARD WHEN PULLING ONTO A HIGHWAY OR NEEDING TO ACCELERATE TO AVOID A ACCIDENT. CHEVROLET SAYS NOTHING IS WRONG AND REFUSES TO ACKNOWLEDGE THE ISSUE NOT WANTING TO HONOR ELECTRIC WARRANTY.

NHTSA ODI #11132068

135,569 miles · Sep 26, 2018
Fuel/propulsion SystemPower TrainSuspensionCrash

ON SEPT. 5TH 2018 I HIT THE CENTER ISLAND WHILE TURNING ON THE CITY STREET AT ABOUT 15MPH. THE IMPACT WAS SO SLIGHT THAT THE AIR BAGS DIDN'T EVEN DEPLOY. I WAS ABLE TO GET IT TO THE DEALERS ON IT'S OWN POWER. MY INSURANCE COMPANY SENT THEIR APPRAISER ,JEREMY , TO INSPECT THE DAMAGE. I HAD TO GET SOME ITEMS OUT OF MY CAR BEFORE…

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ON SEPT. 5TH 2018 I HIT THE CENTER ISLAND WHILE TURNING ON THE CITY STREET AT ABOUT 15MPH. THE IMPACT WAS SO SLIGHT THAT THE AIR BAGS DIDN'T EVEN DEPLOY. I WAS ABLE TO GET IT TO THE DEALERS ON IT'S OWN POWER. MY INSURANCE COMPANY SENT THEIR APPRAISER ,JEREMY , TO INSPECT THE DAMAGE. I HAD TO GET SOME ITEMS OUT OF MY CAR BEFORE THAT. THE MECHANIC HAD THE CAR ON THE RACK SO HE COULD SHOW ME. THE ONLY DAMAGE I READILY NOTICED WAS THE RADIATORS WERE CRUSHED, A 2 1/2" SQUARE FRAME CROSS MEMBER HAD A 1 1/2" DENT WHERE IT HAD IMPACTED THE ISLAND , AND SOME PANELS- NOTICEABLY THE FRONT UNDERSIDE AND DRIVER SIDE FRONT WHEEL WELL WERE DAMAGED. LATER JEREMY CALLED ME AND TOLD ME THE CAR WAS A TOTAL LOSS.HE SAID THE ENTIRE FRAME WAS BENT OUT OF SHAPE. I COULDN'T BELIEVE IT. IN HIS REPORT HE ITEMIZED THE PARTS BUT ABOUT THE PROPULSION SYSTEM HE WROTE, CONDITIONS EXIST THAT THE ELECTRICAL MOTORS COULD START UP THE GAS ENGINE AND FLOOD THE PASSENGER COMPARTMENT WITH CO. WELL IF THAT'S THE CASE, WHY DON'T THEY SIMPLY REPLACE THE COMPONENTS THAT WOULD LEAD TO THAT CONDITION OR IF IT WAS INHERENT IN THE CAR, WHY DOESN'T THE DOT DECLARE THE CAR A ROAD HAZZARD AND RECALL ALL VEHICLES? LN CONSUMER REPORTS THEY DECLARED THE VOLT SCORED 5 OUT OF A POSSIBLE 5 RATING ON COLLISION SURVIVAL. WHAT? THE CAR RUNNING AT 15 MPH GETTING TOTALLED BY HITTING A BUMP IS A 5? I THINK MR. JEREMY IS PADDING ALL HIS ESTIMATES AND SHOULD HAVE AN INDEPENDENT APPRAISER REVIEW THE CAR. EITHER HE IS LYING OR THE CAR IS ACTUALLY A LEMON. I WOULD LIKE YOUR ADVICE ON WHAT LEGAL COURSE I SHOULD TAKE.

NHTSA ODI #11131749

66,000 miles · Jul 30, 2018
EngineFuel/propulsion SystemPower Train

I'VE BROUGHT MY 2013 CHEVY VOLT TO THE DEALERSHIP 4 TIMES BECAUSE IT DIES SUDDENLY WHILE DRIVING. IT HAS PUT MY FAMILY IN DANGER MULTIPLE TIMES. ONE OF THE "FIXES" WAS A SOFTWARE UPDATE THAT ENDED UP AS A RECALL BECAUSE IT CAUSES THE ENGINE TO DIE SUDDENLY (IT'S RECALL #N172130460, WHICH CAME OUT TWO DAYS BEFORE MY LATEST INCIDE…

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I'VE BROUGHT MY 2013 CHEVY VOLT TO THE DEALERSHIP 4 TIMES BECAUSE IT DIES SUDDENLY WHILE DRIVING. IT HAS PUT MY FAMILY IN DANGER MULTIPLE TIMES. ONE OF THE "FIXES" WAS A SOFTWARE UPDATE THAT ENDED UP AS A RECALL BECAUSE IT CAUSES THE ENGINE TO DIE SUDDENLY (IT'S RECALL #N172130460, WHICH CAME OUT TWO DAYS BEFORE MY LATEST INCIDENT, BUT I DIDN'T RECEIVE THE RECALL NOTICE IN THE MAIL UNTIL 7/28/18...6 WEEKS AFTER MY LAST INCIDENT). THE MOST RECENT TIME THE CAR DIED (6/16/18), I WAS ON A MOUNTAIN HIGHWAY AND I WAS LUCKY ENOUGH TO NOT GET HIT AS I PULLED THE CAR TO THE SIDE. THERE WAS NO SIGNAGE THERE EXCEPT FOR THE "CAUTION BEAR XING" SIGN. AFTER TOWING MY CAR TO THE NEAREST DEALERSHIP (IN CARSON CITY, NV, AN 8 HOUR ORDEAL), I HAD EXPENSES FOR LODGING AND TRANSPORTATION (INCLUDING LYFT TO SOUTH LAKE TAHOE TO RENT A CAR BECAUSE NO RENTAL CAR OFFICES OPEN ON SUNDAY IN CARSON CITY, THEN FLYING TO RENO AND TAKING A LYFT TO CARSON CITY TO PICK UP THE CAR BECAUSE CHEVY REFUSED TO SHIP THE CAR TO ME EVEN THOUGH I SAID THAT I WAS AFRAID AND DIDN'T TRUST THE CAR IN THE MOUNTAINS). CHEVY CUSTOMER SERVICE AND CONCIERGE SERVICES REFUSED TO REIMBURSE ME BECAUSE I HAD THE CAR TOWED MYSELF INSTEAD OF CALLING THEIR "CONCIERGE SERVICE" TO TOW IT BECAUSE THAT'S "POLICY." HOW ABOUT THE SAFETY OF THEIR CUSTOMERS SO THAT THEY MAY LIVE TO DRIVE ANOTHER DAY? I'M NOT ASKING FOR ANYTHING MORE THAN THE EXPENSES INCURRED FROM THE LAST ADVENTURE: $1040.72, WHICH I CAN ITEMIZE. OTHER TIMES THAT MY CAR HAS DIED INCLUDE: WHILE MAKING A U-TURN IN A BUSY INTERSECTION (IN 2016), IT DIED AND STARTED BACK UP AS IF NOTHING HAPPENED 20 MINUTES LATER AND A SEPARATE TIME WAS WHEN THE CAR WOULDN'T START AT ALL BUT THEN STARTED UP AGAIN TWO HOURS LATER AS IF THERE WAS NEVER AN ISSUE.EVERY TIME THIS HAPPENED, I HAD A "POWER PROPULSION REDUCED" WARNING ON MY DASHBOARD. I SEE ONLINE THAT MANY HAVE HAD THIS ISSUE.

NHTSA ODI #11114664

56,500 miles · Apr 7, 2016
Power Train

WHILE DRIVING ON THE ROAD, MY HAND PRESSED AGAINST THE GEAR SHIFTER AND IT SHIFTED FROM L TO D WITHOUT PRESSING THE GEAR RELEASE.

NHTSA ODI #10853951

32,800 miles · Mar 24, 2016
EngineFuel/propulsion SystemPower Train

WHILE DRIVING DOWN A ROAD IN INDIANAPOLIS AT 35 MILES PER HOUR, MY CAR SUDDENLY SLOWED DOWN AND A MESSAGE READING " ENGINE NOT AVAILABLE - SERVICE SOON" APPEARED ON MY HUD. MY CAR ONLY HAS 32,800 MILES ON IT AND A CLEAN TITLE. NOTHING ABOUT MY DRIVING CHANGED TO CAUSE THIS ISSUE, IT WAS SUDDEN AND WITHOUT APPARENT CAUSE. I HAD T…

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WHILE DRIVING DOWN A ROAD IN INDIANAPOLIS AT 35 MILES PER HOUR, MY CAR SUDDENLY SLOWED DOWN AND A MESSAGE READING " ENGINE NOT AVAILABLE - SERVICE SOON" APPEARED ON MY HUD. MY CAR ONLY HAS 32,800 MILES ON IT AND A CLEAN TITLE. NOTHING ABOUT MY DRIVING CHANGED TO CAUSE THIS ISSUE, IT WAS SUDDEN AND WITHOUT APPARENT CAUSE. I HAD THE CAR TAKEN TO THE MECHANIC, AND GM JUST RESET THE CODES. IT IS DRIVING OK FOR NOW, BUT A RESET OF CODES IS A TEMPORARY FIX TO THE ISSUE, AND I'VE READ EXTENSIVELY ABOUT MANY, MANY OTHER VOLT OWNERS WITH THE SAME ISSUE. IT IS EXTREMELY DANGEROUS TO HAVE YOUR ENGINE SHUT OFF WHILE DRIVING, ESPECIALLY IF I HAD BEEN ON THE HIGH WAY DURING RUSH HOUR. THIS IS SOMETHING THAT NEEDS LOOKED INTO, AND I FEEL THAT GM IS TRYING TO BURY IT WITH RESETS WHICH AREN'T WORKING FOR MOST PEOPLE.

NHTSA ODI #10851456

52,000 miles · Jan 17, 2016
Electrical SystemEnginePower Train

WHILE DRIVING AT 40MPH ON A STRAIGHT ROAD, I WENT TO CHANGE THE DRIVE MODE, BUT I ACCIDENTALLY HIT THE POWER BUTTON. WHEN I HIT THE POWER BOTTOM THE CAR SHUT DOWN. I WAS NOT ABLE TO RESTART THE CAR WHILE THE SHIFT LEVER WAS IN DRIVE, SO I HAD TO COAST TO A STOP, PLACE THE VEHICLE IN PARK, AND REBOOT THE CAR. I WAS VERY SURPRISE…

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WHILE DRIVING AT 40MPH ON A STRAIGHT ROAD, I WENT TO CHANGE THE DRIVE MODE, BUT I ACCIDENTALLY HIT THE POWER BUTTON. WHEN I HIT THE POWER BOTTOM THE CAR SHUT DOWN. I WAS NOT ABLE TO RESTART THE CAR WHILE THE SHIFT LEVER WAS IN DRIVE, SO I HAD TO COAST TO A STOP, PLACE THE VEHICLE IN PARK, AND REBOOT THE CAR. I WAS VERY SURPRISED THAT I WAS ABLE TO POWER OFF THE CAR WHILE I WAS DRIVING AROUND 40-45 MPH.

NHTSA ODI #10820733

Mileage unknown · Sep 18, 2015
EngineFuel/propulsion SystemPower TrainCrashInjury

WHILE ENTERING IN THE HIGHWAY THE CAR STARTED TO DECELERATE REGARDLESS THE FACT THE GAS PEDAL WAS PUSHED SEVERAL TIMES. THE CAR DECELERATED AND THEN STALLED. THE CAR HAS BEEN REAR ENDED BY THE CAR BEHIND. THIS COULD HAVE BEEN A MUCH MORE SERIOUS ACCIDENT AND IT WAS A VEHICLE FAILURE.

NHTSA ODI #10765090

17,400 miles · Apr 14, 2015
EngineFuel/propulsion SystemPower Train

A WARNING MESSAGE APPEARED ON THE DASH, WHICH SAID "PROPULSION POWER IS REDUCED," FOLLOWED BY, "ENGINE NOT AVAILABLE. SERVICE SOON," AS WELL AS A CHECK ENGINE LIGHT. I PRESSED THE ONSTAR BUTTON TO FIND OUT WHAT WAS WRONG BUT THEY HAD NEVER HEARD OF THE ERROR MESSAGE AND COULD NOT ESTABLISH COMMUNICATION WITH THE VEHICLE TO PERFO…

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A WARNING MESSAGE APPEARED ON THE DASH, WHICH SAID "PROPULSION POWER IS REDUCED," FOLLOWED BY, "ENGINE NOT AVAILABLE. SERVICE SOON," AS WELL AS A CHECK ENGINE LIGHT. I PRESSED THE ONSTAR BUTTON TO FIND OUT WHAT WAS WRONG BUT THEY HAD NEVER HEARD OF THE ERROR MESSAGE AND COULD NOT ESTABLISH COMMUNICATION WITH THE VEHICLE TO PERFORM DIAGNOSTICS. WHILE ON HOLD WITH ONSTAR, THE VEHICLE BEGAN TO SPONTANEOUSLY DECELERATE VERY RAPIDLY DESPITE MY ATTEMPTS TO ACCELERATE, IN THE MIDDLE OF FAST HIGHWAY TRAFFIC. I MADE IT OVER TO THE SIDE OF THE ROAD SAFELY, LIMPING ALONG AT 3-10 MPH, WITH THE HELP OF A GOOD SAMARITAN WHO BLOCKED TRAFFIC FOR ME. THIS IS A SPONTANEOUS OCCURRENCE, WITH NO MAINTENANCE NEGLIGENCE TO EXPLAIN THE EVENT. THE CAR WAS TOWED TO A DEALER, WHICH HAS YET TO DETERMINE THE SOURCE OF THE ISSUE. *TR

NHTSA ODI #10705646

21,000 miles · Sep 16, 2014
Air BagsElectrical SystemPower Train

WAS ENTERING HIGHWAY IN THE DARK AND WENT TO PUT THE CAR INTO "HOLD" MODE TO RUN THE GAS ENGINE AND SAVE BATTERY CHARGE. THIS REQUIRES PUSHING A BUTTON 3 TIMES. I REACHED OVER AND PUSHED THE BUTTON. ACCIDENTLY WAS PUSHING THE "POWER" BUTTON WHICH IS RIGHT BELOW THE "MODE" BUTTON SHUTTING DOWN THE CAR. THE ENTIRE CAR SHUTS OFF, N…

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WAS ENTERING HIGHWAY IN THE DARK AND WENT TO PUT THE CAR INTO "HOLD" MODE TO RUN THE GAS ENGINE AND SAVE BATTERY CHARGE. THIS REQUIRES PUSHING A BUTTON 3 TIMES. I REACHED OVER AND PUSHED THE BUTTON. ACCIDENTLY WAS PUSHING THE "POWER" BUTTON WHICH IS RIGHT BELOW THE "MODE" BUTTON SHUTTING DOWN THE CAR. THE ENTIRE CAR SHUTS OFF, NO LIGHTS, POWERTRAIN, PS, PB JUST DEAD. THIS IS EASY TO DO IF YOU ARE WATCHING THE ROAD AND JUST GLANCE DOWN TO THE BUTTONS. THEY ARE PLACED TOO CLOSE TOGETHER AND THIS IS GOING TO BE A SERIOUS PROBLEM IF IN TRAFFIC OR ON WINDING ROADS. NUMEROUS REPORTS OF THIS ON THE VOLT FORUM! *TR

NHTSA ODI #10633680

Official recalls

3

23V516000 · Air Bags:frontal:driver Side:inflator Module

Jul 27, 2023

General Motors, LLC (GM) is recalling certain 2013 Buick Verano, Chevrolet Camero, Sonic, and Volt vehicles. The driver-side air bag inflator may explode during deployment due to a manufacturing defect.

Consequence & remedy

Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants, resulting in serious injury or death.

Remedy: Dealers will replace the driver-side air bag module, free of charge. On some 2013 Volt vehicles, the steering wheel will be replaced as well, free of charge. Owner notification letters were mailed October 23, 2023. Owners may contact Buick customer service at 1-800-521-7300 and Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N232413120.

18V397000 · Hybrid Propulsion System

Jun 14, 2018

General Motors LLC (GM) is recalling certain 2013 Chevrolet Volt vehicles. An update to the Hybrid Powertrain Control Module 2 (HPCM2) may have disabled the cell balancing function causing a low-voltage condition.

Consequence & remedy

Consequence: If the voltage drops, the vehicle may lose propulsion, increasing the risk of crash.

Remedy: GM will notify owners, and dealers will reprogram the HPCM2, free of charge. The recall began July 24, 2018. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 18215.

15V145000 · Electrical System:ignition; Engine And Engine Cooling:engine:gasoline

Mar 13, 2015

General Motors LLC (GM) is recalling certain model year 2011-2013 Volt vehicles manufactured August 25, 2010, to June 26, 2013. If the driver exits the vehicle without turning off the electrical system, the battery may drain low enough that the gasoline engine will automatically start itself to recharge the electric battery.

Consequence & remedy

Consequence: If the engine runs for an extended period of time in an enclosed space, there may be a build up of carbon monoxide, increasing the risk of personal injury.

Remedy: GM will notify owners, and dealers will update the engine management software to limit the time that the stationary vehicle can be left in the ON position, free of charge. The recall began April 15, 2015. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 14617.

Additional source detail variants (2)

Electrical System:ignition

General Motors LLC (GM) is recalling certain model year 2011-2013 Volt vehicles manufactured August 25, 2010, to June 26, 2013. If the driver exits the vehicle without turning off the electrical system, the battery may drain low enough that the gasoline engine will automatically start itself to recharge the electric battery.

Consequence: If the engine runs for an extended period of time in an enclosed space, there may be a build up of carbon monoxide, increasing the risk of personal injury.

Remedy: GM will notify owners, and dealers will update the engine management software to limit the time that the stationary vehicle can be left in the ON position, free of charge. The recall began April 15, 2015. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 14617.

Engine And Engine Cooling:engine:gasoline

General Motors LLC (GM) is recalling certain model year 2011-2013 Volt vehicles manufactured August 25, 2010, to June 26, 2013. If the driver exits the vehicle without turning off the electrical system, the battery may drain low enough that the gasoline engine will automatically start itself to recharge the electric battery.

Consequence: If the engine runs for an extended period of time in an enclosed space, there may be a build up of carbon monoxide, increasing the risk of personal injury.

Remedy: GM will notify owners, and dealers will update the engine management software to limit the time that the stationary vehicle can be left in the ON position, free of charge. The recall began April 15, 2015. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 14617.

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

2

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.

PE19013 · Passenger Sensing System

Opened Sep 17, 2019 · Closed Jul 2, 2021

Status: closed (inferred from source dates) · Air Bags:sensor:occupant Classification:front Passenger

In September 2019, the Office of Defects Investigation (ODI) opened PE19-013 to assess the potential safety related effects of a malfunction of the Passenger Sensing System (PSS) in 2012-2013 Model Year (MY) Chevrolet Volt vehicles. Consumers reported that due to a malfunction of the PSS, the air bag system malfunction indicator light (MIL) was activated. Many of the complaints noted the malfunction occurred after the warranty period expired and mentioned high repair costs as a major deterrent to the repair of the vehicle.The PSS sensor mat is embedded in the front passenger seat cushion and is intended to detect child seats and small statured occupants who could be harmed by deployment of the frontal passenger air bag. The PSS may develop a malfunction due to bunching of the sensor mat in the seat trench. The bunching of the sensor mat could cause the mat to repeatedly fold in the same location. Over time, the repeated folding can cause an increased resistance in the sensor mat. An increased resistance in the PSS sensor mat is detected as a fault in the air bag system diagnostic. If this fault is detected, a diagnostic trouble code will be stored in the air bag control unit and the air bag MIL will illuminate.Further, if the fault is detected, the passenger frontal and knee air bags will be suppressed in a crash of sufficient severity to warrant a commanded deployment regardless of the nature of size of the occupant of the front passenger seat.The report counts shown above include only those reports that specifically address the issue covered by this investigation, failure of the PSS sensor mat. Reports alleging only that the air bag light is on with no cause stated, or where a different cause was otherwise identified, were excluded as the air bag light could be illuminated for system faults other than a PSS malfunction.The subject vehicles have been in service for approximately ten (10) years. An analysis of General Motors (GM) warranty data for the subject vehicles, including a comparison with other agency and manufacturer data pertaining to similar occupant detection system failure investigations, indicates the subject vehicles experience a comparatively low complaint rate for this issue given the number of years the vehicles have been in service.GM has instituted a cost reduction program for the repair/replacement of the PSS in the subject vehicles. Based on this cost reduction program as well as:1) a comparatively low warranty rate; 2) no reported injuries, deaths or asymmetric deployments; and 3) the age of the vehicles; ODI is closing this Preliminary Evaluation. 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 new circumstances.The ODI complaints cited above can be viewed at www.nhtsa.gov under the following ODI identification numbers in a separate attachment.