There are 17 owner-reported engine complaints for the 2006 Pontiac Grand Prixin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Seems like a bad motor gasket cause it’s a constant burning oil smell with no visible leaks at all
BAD ENGINE HAD WHILE DRIVING ALMOST CAUSED AN ACCIDENT BAD KNOCKING NOISE WITHIN THE MOTOR DO TO FAULTY PARTS MECHANIC SAYS A PART FAILED WHILE DRIVING CAR STARTS BUT HAS BAD NOISE WITHIN THE ENGINE AND NOW VEHICLE IS RENDERED USELESS.
TL* THE CONTACT OWNS A 2006 PONTIAC GRAND PRIX. THE CONTACT STATED THAT THE VEHICLE ENGINE CAUGHT FIRE. THE VEHICLE WAS PARKED AND UNOCCUPIED. THE CONTACT WAS ABLE TO USE A FIRE EXTINGUISHER TO EXTINGUISH THE FIRE. THE CONTACT STATED THAT THE FIRE DEPARTMENT OR POLICE WAS NOT CONTACTED. THE VEHICLE WAS NOT TOWED. THE INSURANCE COMPANY WAS CONTACTED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS NOT AVAILABLE.
ENGINE DIES ABRUPTLY WITHOUT WARNING AT ANY SPEED LEAVING THE DRIVER WITHOUT BRAKES OR POWER STEERING; VERY DANGEROUS DOWN HILL, ON CURVES, CHANGING LANES, AT SIGNALS, AT STOPS, DURING T;URNS, ETC.
ABOUT 5 MINUTES AFTER THE CAR WAS PARKED, THE ENGINE CAUGHT ON FIRE. IT WAS A TOTAL LOSS. THERE WAS A FIRE REPORT MADE. THE CAR HAD APPROXIMATELY 180,000 MILES AND WAS WELL MAINTAINED.
TL* THE CONTACT OWNS A 2006 PONTIAC GRAND PRIX. THE CONTACT INQUIRED ABOUT A CLASS ACTION LAWSUIT ON HIS VEHICLE. THE CONTACT STATED THAT THE VEHICLE COULD OVERHEAT BECAUSE THE COOLANT WAS NOT WORKING PROPERLY. AS A RESULT, SLUDGE COULD BUILD UP AND THE VEHICLE COULD LOCK UP AND EXPLODE. THE VEHICLE WAS DRIVEN TO THE DEALER FOR SERVICE. THE APPROXIMATE FAILURE MILEAGE WAS 100,000.
VEHICLE USES EXCESSIVE OIL, "OIL LEVEL LOW" LIGHT WILL COME ON 1,500-2000 MILES AFTER OIL CHANGES. OIL DIPSTICK WILL SHOW NO OIL WHEN IT REACHES THIS POINT. HAS OCCURED REGULARLY WITH THIS VEHICLE.
VEHICLE WAS STATIONARY, HAD BEEN PARKED APPROXIMATELY 10 MINUTES. THE VEHICLE CAUGHT FIRE AND WAS A TOTAL LOSS. THE CAUSE IS UNKNOWN, BUT WE BELIEVE IT HAS SOMETHING TO DUE WITH THE RECALL ABOUT GRAND PRIX'S CATCHING FIRE.
TL* THE CONTACT OWNS A 2003 PONTIAC GRAND PRIX. WHILE THE VEHICLE WAS PARKED, IT CAUGHT FIRE. THE FIRE WAS EXTINGUISHED BY THE FIRE DEPARTMENT, BUT THEY WERE UNABLE TO DETERMINE WHAT CAUSED THE FIRE. THERE WERE NO INJURIES AND A POLICE REPORT WAS NOT FILED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURE WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 150,000.
MY CAR BEGAN TO EMIT WHITE SMOKE AND AN ODOR OF BURNING ANTIFREEZE. I BEGAN TO LOSE POWER SO I PULLED OVER. I HAD MY CAR TOWED TO THE GARAGE AND THEY REPLACE MY INTAKE MANIFOLDS GASKETS, WHICH HAD COMPLETELY BEEN EATEN AWAY. *TR
I HAVE HAD THIS CAR FOR 5 YEARS WITHOUT REALLY ANY PROBLEMS. I GET OIL CHANGED REGULARLY AND FLUIDS CHECKED AT SAME TIME. A COUPLE OF DAYS AGO I NOTICED THAT MY CAR SEEMED TO GET HOT AND THE TEMP GAUGE WAS ABOUT 3/4 WAY TO HOT. THE NEXT DAY I DROVE TO WORK WHICH IS ABOUT 16 MILES AND HAD NO PROBLEMS. I WAS COMING BACK FROM MY LUNCH BREAK AND MY CAR ALL OF SUDDEN HAD BELLS GOING OFF AND SAID MY A/C SHUT OFF FOR ENGINE PROTECTION AND MY TEMP GAUGE WAS HALF IN THE RED. I DROVE STRAIGHT TO THE MECHANIC. HE LOOKED AT VEHICLE AND TOLD ME THE INTAKE MANIFOLD GASKET AND FEW OTHER GASKETS WENT BAD AND HAD WATER COMING OUT EVERYWHERE. I HAVE NEVER HAD ANY PROBLEMS OF THIS SORT IN ANY OF THE OTHER VEHICLES I HAVE OWNED AND HAVE DRIVEN THEM TO 170000 MILES PLUS. THIS IS THE FIRST TIME I HAVE BOUGHT ANY OTHER VEHICLE BESIDES A FORD TAURUS. I HAVE READ SEVERAL COMPLAINTS ABOUT THIS HAPPENING TO OTHERS AND GM WONT DO ANYTHING ABOUT IT. THIS JUST MAKES ME THINK THAT I WILL NEVER BUY GM AGAIN BECAUSE OF POOR QUALITY AND NOT CARING ABOUT CUSTOMERS. *TR
THERE WAS OIL IN MY INTAKE MANIFOLD WHEN MY ENGINE BLEW I WAS UNABLE TO START MY 2006 PONTIAC UNTIL THEN I ALSO MY AIR CONDITIONER WENT OUT BECAUSE A LINE A LINE WAS CROSSING THE AIR CONDITIONER LINE. *TR
ENGINE COMPARTMENT CAUGHT ON FIRE. *TR
I WAS ON AN INTERSTATE HEADING HOME IN THE RAIN. TRAFFIC WAS MOVING ABOUT 10 MPH. I TRIED TO ACCELERATE, BUT I DIDN'T GO ANYWHERE. MY CAR DIED AND THE ENTIRE DASHBOARD WAS BLANK-NO LIGHTS AT ALL. I WAS ABLE TO GET TO THE SHOULDER OF THE INTERSTATE. I PUT THE CAR IN PARK, SHUT IF OFF, AND IT RESTARTED WITH NO PROBLEM. HAS NOT OCCURRED BEFORE. OBVIOUSLY, A VERY DANGEROUS SITUATION TO BE IN. *TR
TL*THE CONTACT OWNS A 2006 PONTIAC GRAND PRIX. WHILE DRIVING APPROXIMATELY 30 MPH, THE VEHICLE JERKED AND THEN STALLED AT A TRAFFIC LIGHT. SHE SHIFTED THE GEAR INTO PARK IN ORDER TO RESTART THE VEHICLE. AFTERWARDS, THE VEHICLE WOULD NOT ACCELERATE PAST TEN MPH. THE VEHICLE WAS TOWED TO A LOCAL REPAIR SHOP AND THEY STATED THAT THE TRANSMISSION WAS DEFECTIVE. THE VEHICLE WAS REPAIRED. APPROXIMATELY TWO MONTHS LATER, SHE NOTICED A LOUD NOISE AND HER VEHICLE WAS DRIVEN TO A LOCAL REPAIR SHOP. THE MECHANIC INFORMED HER THAT THERE WAS A HOLE IN THE WATER PUMP THAT NEEDED TO BE REPLACED. FOUR MONTHS LATER, THE WINDOWS WOULD NOT ROLL DOWN. THE VEHICLE WAS DRIVEN TO A LOCAL REPAIR SHOP AND THE MECHANIC REVIEWED A DIAGRAM OF THE VEHICLE. THE DIAGRAM STATED THAT THE FUSE FOR THE WINDOW WAS NOT LOCATED IN THE PROPER PLACE. THE WINDOW HAS NOT BEEN REPAIRED. THE DEALER STATED THAT THE FAILURE WAS NOT UNDER WARRANTY. THE MANUFACTURER HAS NOT BEEN NOTIFIED. THE CURRENT MILEAGE WAS 50,000 AND FAILURE MILEAGE WAS 45,000.
THE EVENTS LEADING UP TO THE FAILURE, > THE GMC MANUFACTURE FAILURE TO PROVIDER ADEQUATE COOLANT TO THE VEHICLE. THE MANUFACTURE IS ALREADY AWARE OF THE ISSUES AND FAILS TO ADMIT OR CORRECT THE PROBLEM FROM OCCURRING TO UNAWARE MOTORIST. THE ISSUE IS THE DEXCOOL COOLANT THAT DESTROYING THE CAR PERFORMANCE, RADIATOR, WATER PUMPS AND MAIN FOLD GASKETS. ONCE THIS DAMAGE HAS STARTED, THERE IS NO STOPPING IT. THE CAR IS A COMPLETE LEMON AND IT IS TOO LATE OR EXPENSIVE TO FIX THE DAMAGE. THERE HAS BEEN A CLASS ACTION LAW SUIT ON VARIOUS GM MODELS DUE TO THIS DEX COOL ISSUE. UNLESS YOU KNOW ABOUT THE ISSUES AND RESEARCH THEM, THIS CAN BE HAPPENING TO YOU AS A GM CAR OWNER/LESSER AND YOU WOULD NOT KNOW IT. THE GMC DEALERS DOWN PLAY THE PROBLEMS YOU EXPLAIN TO THEM AND BLAME THE DRIVER OR JUST WEATHER CONDITIONS AND STATE" THIS IS NORMAL AND IT JUST HAPPENS SOMETIMES. THIS SHOULD BE AGAINST THE LAW AND REVIEW FURTHER BECAUSE NOBODY SHOULD HAVE TO GO THROUGH THIS HORROR. THE MAIN PROBLEM IS THAT YOU DON'T KNOW THAT YOUR CREATING DAMAGE TO YOUR CAR BECAUSE YOU ARE JUST DRIVING AND THEN ONE DAY YOU GET A MESSAGE ON THE DASH BOARD THAT THE CAR IS OVER HEATING. YOU DO NOT KNOW WHY, HOE OR EVEN WHAT WOULD CAUSE THIS. BY THIS TIME ITS TOO LATE. THE RADIATOR, WATER HOSES AND MAIN FOLD GASKETS HAVE BEEN ALL DAMAGED BY THIS ACID EATING DEXCOOL COMPONENT AND THEN ITS FINANCIALLY THE DRIVERS FAULT TO PAY OUT OF POCKET EXPENSES, RANGING FROM ($400-$4000+). I AM A SINGLE MOTHER WHO PURCHASE A NEW VEHICLE SO I WOULD NOT HAVE THE PROBLEMS OF BEING BROKE DOWN ON THE ROAD OR HAVING A USED CAR WITH SOME ONE ELSE'S PROBLEMS. I AM NO STUCK WITH A DAMAGE 2006 GRAND PRIX, CAR NOTE FOR THE GRAND PRIX $400, INSURANCE FOR THE DAMAGE GRAND PRIX $300 AND REPAIR COST SO FAR EST. $3200.I CAN NOT EVEN USE OR DRIVE THE CAR UNTIL I FIND A WAY TO PAY TO FIX SOMETHING I DID NOT KNOW WAS HAPPENING. THIS CAN NOT AND SHOULD NOT BE ALLOWED. *TR
AIR BECOMES TRAPPED IN THE VEHICLE'S COOLING SYSTEM. PROBLEM IDENTIFIED IN GM PI# C3711. THREE GM SERVICE CENTERS WERE UNABLE TO PURGE THE AIR FROM THE COOLING SYSTEM. NM
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026