Problems · by component

2008 Pontiac G6 fuel/propulsion system problems

52 owner complaints to NHTSA about the 2008 Pontiac G6 cite fuel/propulsion system, 5% of all 1,080 complaints for this model year.

Complaints
52
5% of all complaints
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
0
Reported by owners
01 —Owner reports

What owners say about the fuel/propulsion system

Verbatim from NHTSA complaints, newest first
“Fuel pump defective, return hose onto the top of fuel pump starts to leak fuel.Which can led to car stalling out from not having the correct fuel pressure which caused the engine to stall everywhere,the road,fire hazard,etc.”
Owner complaint to NHTSAFiled Apr 8, 2026Fuel/propulsion systemODI 11729897
“TL* THE CONTACT OWNS A 2008 PONTIAC G6. WHILE TRAVELING AT HIGH SPEEDS, THE VEHICLE BEGAN TO RATTLE AND SHAKE WITHOUT WARNING. ALSO, AFTER THE CONTACT PUT ON HER SEAT BELT, THE SEAT BELT WARNING CHIME SOUNDED WHILE THE SEAT BELT WAS ENGAGED AND IN USE. THE CONTACT TOOK THE VEHICLE TO AN INDEPENDENT MECHANIC AND WAS PROVIDED A REPAIR ESTIMATE. ADDITIONALLY, THE CONTACT STATED THAT THE FUEL PUMP NO LONGER FUNCTIONED, WHICH MADE THE VEHICLE INOPERATIVE. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 156,000.”
Owner complaint to NHTSAFiled Dec 2, 2019Suspension, Seat belts, Fuel/propulsion systemODI 11286461
“THE SMELL OF STRONG GAS IN THE CAR . AS I DRIVE THE CAR THE SMELL OF GAS GET STRONGER AND STRONGER ON THE INSIDE AND WHEN I LEAVE THE CAR ON THE OUTSIDE I HAD THE CAR CHECKED AND THEY CAN'T FIND OUT WHERE THIS STRONG SMELL OF GAS IS COMING FROM AND THIS PRESENTS A GREAT DANGER AND PROBLEM”
Owner complaint to NHTSAFiled Oct 14, 2019Fuel/propulsion systemODI 11268315
“NOTICED A STRONG GAS SMELL COMING FROM REAR OF CAR FOR SEVERAL DAYS. FINALLY TOOK CAR IN FOR INSPECTION. MECHANIC SAID THAT THE FUEL PUMP MODULATOR NEEDS TO BE REPLACED. I'VE SEEN ON SEVERAL WEBSITES THAT THE PONTIAC G5 HAS THE SAME PROBLEM AND WERE BEING RECALLED. UNFORTUNATELY I HAVEN'T SEEN ANYTHING ABOUT THE PONTIAC G6. I BELIEVE THAT THIS IS A SERIOUS ISSUE WITH THIS CAR. COULD YOU PLEASE INVESTIGATE THIS. WHEN PARKING THE CAR IN MY GARAGE THE ODOR WAS QUITE STRONG AND ALSO A DANGER TO ME AND MY FAMILY. THE CAR COULD HAVE CAUGHT ON FIRE AS WELL AS MY HOUSE.”
Owner complaint to NHTSAFiled Jul 22, 2019Fuel/propulsion systemODI 11233721
“FUEL LEAKING FROM GAS TANK AREA AND SHOWING P0446 CODE. THERE IS AN EXISTING RECALL FOR THIS ISSUE FOR THIS MODEL IN MY MODEL YEAR RANGE BUT MY VIN IS NOT INCLUDED WITHIN THE RECALL. I FEEL MY ISSUE SHOULD BE COVERED BY THE RECALL.”
Owner complaint to NHTSAFiled Feb 23, 2019Fuel/propulsion systemODI 11182132
“TL* THE CONTACT OWNS A 2008 PONTIAC G6. THE CONTACT STATED THAT THE FUEL TANK WAS LEAKING FUEL AND THE FUEL PRESSURE INDICATOR ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, BUT THEY COULD NOT DETERMINE THE CAUSE OF THE FAILURE. THE LOCAL DEALER AND MANUFACTURER WERE NOT CONTACTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 150,000.”
Owner complaint to NHTSAFiled Oct 10, 2018Fuel/propulsion systemODI 11139424

Showing 6 of 52 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.