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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

Electrical System complaints

63 reports
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93,000 miles · Nov 12, 2020
Air BagsElectrical SystemSeats

THE SERVICE AIRBAG MESSAGE APPEARS RANDOMLY WHEN IN MOTION. THE CHEVY DEALER STATES THAT THE PROBLEM IS THE PASSENGER PRESENCE SYSTEM. THE ESTIMATED COST TO REPAIR IS $1,300.

NHTSA ODI #11374312

8,500 miles · Oct 24, 2020
Electrical System

BACK IN JUNE 2020 TOOK MY 2013 CHEVY VOLT TO FERMAN CHEVROLET FOR SERVICE HIGH VOLTAGE SYSTEM FAULT, DRIVE BATTERY NOT FULLY CHARGING, REDUCED PROPULSION FAULT AND BURNT ODOR FROM UNDER HOOD. THE DEALER FIX WAS PREFORM GM SERVICE BULLETING. NEXT WEEK STILL NOT FULLY CHARGING. WAS TOLD TO DRIVE CAR SO THE BATTERY CAN LEARN MY DRI…

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BACK IN JUNE 2020 TOOK MY 2013 CHEVY VOLT TO FERMAN CHEVROLET FOR SERVICE HIGH VOLTAGE SYSTEM FAULT, DRIVE BATTERY NOT FULLY CHARGING, REDUCED PROPULSION FAULT AND BURNT ODOR FROM UNDER HOOD. THE DEALER FIX WAS PREFORM GM SERVICE BULLETING. NEXT WEEK STILL NOT FULLY CHARGING. WAS TOLD TO DRIVE CAR SO THE BATTERY CAN LEARN MY DRIVING HABITS. STILL NOT CHARGING. ON 16 OCT SAME PROBLEM AND WOULD NOT DRIVE. NOW THE BATTERY 8 YEAR WARRANTY HAS RAN OUT. NEW FIX IS $5300 BATTERY REBUILD AND I SAY THEY NEVER FIXED THE ORIGINAL PROBLEM. CAR HAS 85 THOUSAND MILES AND WILL NOT DRIVE.

NHTSA ODI #11366229

53,000 miles · Feb 11, 2020
Electrical System

TL* THE CONTACT OWNS A 2013 CHEVROLET VOLT. THE CONTACT STATED THAT WHILE DRIVING AT 45 MPH, THE VEHICLE HEADLIGHT BECAME INOPERABLE. THERE WERE NO WARNING LIGHTS ILLUMINATED. THE CONTACT WAS ABLE TO DRIVE WITH THE HAZZARD LIGHTS FLASHING TO HER RESIDENCE. ROADSIDE ASSISTANCE WAS CONTACTED AND THE VEHICLE WAS TOWED TO ELCO CHEVR…

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TL* THE CONTACT OWNS A 2013 CHEVROLET VOLT. THE CONTACT STATED THAT WHILE DRIVING AT 45 MPH, THE VEHICLE HEADLIGHT BECAME INOPERABLE. THERE WERE NO WARNING LIGHTS ILLUMINATED. THE CONTACT WAS ABLE TO DRIVE WITH THE HAZZARD LIGHTS FLASHING TO HER RESIDENCE. ROADSIDE ASSISTANCE WAS CONTACTED AND THE VEHICLE WAS TOWED TO ELCO CHEVROLET LOCATED AT 15110 MANCHESTER RD, BALLWIN, MO 63011 (636) 232-0007 WHERE THE TECHNICIAN DIAGNOSED THE VEHICLE BUT WAS UNABLE TO DUPLICATE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 53,000.

NHTSA ODI #11308565

67,000 miles · Dec 23, 2019
Electrical SystemFuel/propulsion System

MY CAR HAD THE EXACT ISSUES THAT ARE DOCUMENTED IN NHTSA CAMPAIGN NUMBER 18V397000 WHILE DRIVING ON THE FREEWAY, I GOT A LOW PROPULSION WARNING WHEN THE LITHIUM BATTERY WAS DEPLETED AND SWITCHED TO ENGINE. ENGINE WAS REVVING VERY HIGH AND ALMOST NO ACCELERATION WAS AVAILABLE. I MADE IT HOME AND CAR WOULDN'T RESTART. 12V BATTE…

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MY CAR HAD THE EXACT ISSUES THAT ARE DOCUMENTED IN NHTSA CAMPAIGN NUMBER 18V397000 WHILE DRIVING ON THE FREEWAY, I GOT A LOW PROPULSION WARNING WHEN THE LITHIUM BATTERY WAS DEPLETED AND SWITCHED TO ENGINE. ENGINE WAS REVVING VERY HIGH AND ALMOST NO ACCELERATION WAS AVAILABLE. I MADE IT HOME AND CAR WOULDN'T RESTART. 12V BATTERY WAS DEAD SO I REPLACED IT BUT STILL COULD NOT START THE CAR.

NHTSA ODI #11290848

97,919 miles · Sep 21, 2019
Electrical SystemEngineFuel/propulsion System

I WAS DRIVING MY 2013 CHEVROLET VOLT AND I RECEIVED A LOSS OF PROPULSION MESSAGE ON MY DASHBOARD AND IMMEDIATELY FOLLOWED BY A CHECK ENGINE LIGHT. MY CAR SHUT DOWN AND SLOWED DOWN ON THE FREEWAY AS I WAS DRIVING. IT WAS VERY DANGEROUS BECAUSE IT WAS ALSO DARK. I WAS ABLE TO GLIDE TO EXIT THE FREEWAY. MY CAR CAME TO A COMPLETE ST…

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I WAS DRIVING MY 2013 CHEVROLET VOLT AND I RECEIVED A LOSS OF PROPULSION MESSAGE ON MY DASHBOARD AND IMMEDIATELY FOLLOWED BY A CHECK ENGINE LIGHT. MY CAR SHUT DOWN AND SLOWED DOWN ON THE FREEWAY AS I WAS DRIVING. IT WAS VERY DANGEROUS BECAUSE IT WAS ALSO DARK. I WAS ABLE TO GLIDE TO EXIT THE FREEWAY. MY CAR CAME TO A COMPLETE STOP IN THE EXIT LANE OF THE FREEWAY. I PRESSED THE POWER BUTTON TO TURN OFF THE CAR AND THEN I WAITED ABOUT 30 SECONDS AND I TURNED THE POWER BUTTON BACK ON AND THE CAR CAME ON AS ONLY POWER MODE. I WAS ABLE TO MOVE THE CAR VERY SLOWLY SOMEWHERE MORE SAFE. I CALLED TOW TRUCK AND I TOWED IT TO DEALERSHIP. THE VOLT WAS STILL ABLE TO MOVE SLOWLY UP THE TOW TRUCK AND WHEN I ARRIVED AT THE DEALERSHIP, IT WAS STILL ABLE TO MOVE SLOWLY TO THE ENTRANCE OF THE SERVICE STATION. CHECK ENGINE LIGHT WAS ON, BUT LOSS OF PROPULSION LIGHT WAS GONE. SERVICE ADVISORS TOLD ME THEY WOULD FIX MY CAR AS IT WAS COVERED UNDER THE RECALL EVEN THOUGH MY CAR WAS SALVAGED. THE ESTIMATE WAS $145. LATER ON THEY CALLED ME THAT MY CAR HAD 8 CHECK ENGINE LIGHTS ON AND THAT I NEEDED A TRANSMISSION BECAUSE THEIR WAS A WHINING SOUND AND ALSO LOSS OF PROPULSION STILL ON. I WENT TO GO LOOK AT MY CAR A COUPLE DAYS LATER AFTER I FILLED A COMPLAINT WITH GM HEADQUARTERS BECAUSE THIS SHOULD BE COVERED UNDER THE RECALL. WHEN I WENT TO GO CHECK OUT MY VEHICLE, IT WAS IN A WORSE CONDITION THEN WHEN I DROPPED IT OFF. MY CAR WOULD NOT EVEN TURN ON. WHEN I PUSHED THE POWER BUTTON, IT WOULD SAY ENGINE NOT AVAILABLE AND IT WOULD ALSO SAY LOSS OF PROPULSION AND CHECK ENGINE LIGHT STILL ON. I WAS NOT ABLE TO MOVE MY CAR AND THE BATTERY STILL HAD 8 MILES LEFT. IT WAS WEIRD AS TO WHY MY CAR IS GETTING WORSE WHILE BEING IN THE DEALER. DEALER TOLD ME THEY ARE DONE WITH THE UPDATE AND IN ORDER TO DIAGNOSE THE VEHICLE, I HAVE TO PAY $430 AND MORE THAN LIKELY THOUSANDS OF DOLLAR TO FIX IT.

NHTSA ODI #11257145

83,000 miles · Feb 28, 2019
Electrical SystemFuel/propulsion SystemPower Train

2013 CHEVY VOLT STOPPED ACCELERATING AND RECEIVED A LOW PROPULSION WHILE DRIVING ON A STATE ROUTE IN OHIO. OUR SON WAS DRIVING THE VEHICLE AND COULD HAVE BEEN KILLED IF THIS WAS ON A HIGHWAY. THE VOLT WOULD NOT MOVE AND HE HAD TO TRY TO GLIDE OFF THE ROAD SINCE IT HAD NO POWER. HE PUSHED THE CAR OFF THE ROAD SO IT WOULD NOT B…

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2013 CHEVY VOLT STOPPED ACCELERATING AND RECEIVED A LOW PROPULSION WHILE DRIVING ON A STATE ROUTE IN OHIO. OUR SON WAS DRIVING THE VEHICLE AND COULD HAVE BEEN KILLED IF THIS WAS ON A HIGHWAY. THE VOLT WOULD NOT MOVE AND HE HAD TO TRY TO GLIDE OFF THE ROAD SINCE IT HAD NO POWER. HE PUSHED THE CAR OFF THE ROAD SO IT WOULD NOT BE HIT. IF THIS SITUATION WOULD HAVE OCCURRED WHILE DRIVING ON THE HIGHWAY, OUR SON COULD HAVE BEEN KILLED. THIS PROBLEM HAS OCCURRED TO OTHER VOLT OWNERS IF YOU LOOK THIS ISSUE UP ON THE INTERNET. WHY HASN'T GM FIXED THIS ISSUE SO PEOPLE ARE SAFE WHEN DRIVING THIS VEHICLE? WE BROUGHT OUR VOLT INTO THE SERVICE DEPARTMENT, THIS CAR IS NOW GOING ON 3 WEEKS AND WE STILL DO NOT HAVE OUR CAR BACK. THEY FIRST SAID IT WAS A SHORT IN THE ELECTRICAL MODULE, AND REPLACED PARTS. NOW THEY ARE STATING THAT IT DID NOT WORK AND IT IS THE TRANSMISSION. I AM NOT SURE THEY KNOW WHAT IS REALLY WRONG WITH THIS VOLT. THEY ARE NOW ASKING US TO PAY $3661 TO HAVE THIS TRANSMISSION REPLACE AND GM WILL PAY 2000 OR IT WOULD BE 5661. THIS CAR IS NOT EVEN WORTH THAT MUCH AT THIS POINT HAS 83000 MILES ON IT AND THE TRANSMISSION SHOULD HAVE NEVER WENT OUT. GM TRIED TO SAY IT WAS THE SHORT, NOW THEY ARE SAYING IT WAS NOT A SHORT. I DO NOT CARE WHAT IT IS I JUST WANT A SAFE CAR FOR MY SON TO DRIVE. IT SEEMS LIKE THEY ARE BACK PEDALING TO TRY TO NOT PAY FOR SOMETHING THAT THEY (GM) SHOULD PAY FOR. ESPECIALLY SINCE THIS ISSUE IS NOT A NEW ISSUE FOR THE CHEVY VOLT. GM NEEDS TO STAND BY THEIR PRODUCTS AND FIX THIS VEHICLE.

NHTSA ODI #11183081

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

118,000 miles · Oct 26, 2018
Electrical System

TL* THE CONTACT OWNS A 2013 CHEVROLET VOLT. WHILE DRIVING APPROXIMATELY 70 MPH, THE VEHICLE STOPPED WITHOUT WARNING. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND THE VEHICLE WAS TOWED TO SULLIVAN-PARKHILL AUTOMOTIVE (217-903-2817, LOCATED AT 440 W ANTHONY DR, CHAMPAIGN, IL 61822) WHERE IT WAS DIAGNOSED THAT THE T6 POWER MO…

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TL* THE CONTACT OWNS A 2013 CHEVROLET VOLT. WHILE DRIVING APPROXIMATELY 70 MPH, THE VEHICLE STOPPED WITHOUT WARNING. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND THE VEHICLE WAS TOWED TO SULLIVAN-PARKHILL AUTOMOTIVE (217-903-2817, LOCATED AT 440 W ANTHONY DR, CHAMPAIGN, IL 61822) WHERE IT WAS DIAGNOSED THAT THE T6 POWER MODULE WENT OUT. THE VEHICLE WAS NOT REPAIRED. THE CONTACT WAS EXPECTING A CALL BACK FROM THE MANUFACTURER. THE FAILURE MILEAGE WAS APPROXIMATELY 118,000.

NHTSA ODI #11142939

67,890 miles · Aug 2, 2018
Electrical SystemFuel/propulsion SystemVehicle Speed Control

THE CAR REDUCES SPEED WITHOUT ADVANCE WARNING ON HWY AND DECREASES TO 30-40 MPH IN A 65-70 MPH ZONE. THE AIR CONDITIONING STOPPED WORKING, SOME SAFETY ELECTRICAL COMPONENTS MALFUNCTION MID DRIVE AND RESUME WORKING

NHTSA ODI #11115330

39,000 miles · May 24, 2018
Electrical SystemEngine

GAS GENERATOR FAILED TO START WHEN BATTERY WAS DEPLETED WHILE ON CITY STREET SLOWING TO A STOP AT AN INTERSECTION. WARNING MESSAGE ABOUT REDUCED PROPULSION AND YELLOW ENGINE INDICATOR ILLUMINATED. CAME TO A COMPLETE STOP AND TURNED VEHICLE OFF. TRIED TURNING BACK ON, RECEIVED WAITING TO INITIALIZE MESSAGE, BUT POWER TO ENGINE WA…

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GAS GENERATOR FAILED TO START WHEN BATTERY WAS DEPLETED WHILE ON CITY STREET SLOWING TO A STOP AT AN INTERSECTION. WARNING MESSAGE ABOUT REDUCED PROPULSION AND YELLOW ENGINE INDICATOR ILLUMINATED. CAME TO A COMPLETE STOP AND TURNED VEHICLE OFF. TRIED TURNING BACK ON, RECEIVED WAITING TO INITIALIZE MESSAGE, BUT POWER TO ENGINE WAS NEVER RESTORED. TOWED CAR TO DEALERSHIP.

NHTSA ODI #11097847

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.