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Pontiac Grand Prix Power Train Automatic Transmission Safety Report | Apr 01, 2011



Reported on Apr 01, 2011


MY CAR SLAMS INTO GEAR FROM A DEAD-STOP. IT GRINDS VERY LOUDLY WHEN THEN TCC IS APPLIED. SHIFTS HARD AND SHAKES VERY VIOLENTLY, SOMETIMES TO THE POINT WHERE IT IS ALMOST UNDRIVABLE. GM DEALER REFUSES TO ACKNOWLEDGE THE PROBLEM BECAUSE THEY DON'T WANT TO FIX IT. THEY CLAIMED THE GRINDING NOISE IS A TICK OR RATTLE CAUSED BY TIMING CHAIN FOR THE DISPLACEMENT ON DEMAND WHEN THE ENGINE GOES FROM 8 TO 4 CYLINDERS. THE TSB ONLY STATES IT WOULD MAKE THE NOISE WHEN GOING FROM 8 TO 4, NOT 4 TO 8. MY CAR ONLY MAKES THE NOISE WHEN I'M ON THE THROTTLE, SO IT WOULD NOT BE GOING INTO 4 CYLINDER MODE. GM ARE A BUNCH OF LYING DIRTBAGS WHO DON'T WANT TO FIX THE PROBLEMS THEY CAUSE. THEY COMPROMISED THE RELIABILITY OF THIS TRANSMISSION TO MAKE IT SHIFT SMOOTHER. I'M A MEMBER OF AN ONLINE FORUM OF JUST THE LS4/4T65E-HD FWD CARS AND THERE ARE OVER 138 PEOPLE WITH THESE CARS WHO HAD OR ARE HAVING TRANSMISSION PROBLEMS/FAILURES. WHY HASN'T THERE BEEN SOME KIND OF RECALL YET? THIS IS CERTAINLY A BIG ENOUGH PROBLEM TO WARRANT A RECALL! *TR
Make: Pontiac
Model: Grand Prix
Manufactured by: GENERAL MOTORS LLC
Year: 2006
Was a crash reported? N
Was an injury reported?
Was a death reported?
Was a fire reported? N
Location: GLENMOORE PA
Vehicle Identification Number (VIN):
Mileage: 65000 miles.
Speed: 55 MPH
Number of cylinders:
Vehicle type:
Vehicle fuel:
Was a police report filed? N
Tire size:
Dealer name and location:
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