2004 Pontiac Grand Prix Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2004 Pontiac Grand Prix
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2004 Pontiac Grand Prix ProblemsErratic Shifting of the Automatic Transmission
The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure control solenoid.
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Our technicians tell us that operating the engine with a coolant/oil mix can result in internal engine damage. Replacing the intake manifold gasket should correct these leaks.
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
2004 Pontiac Grand Prix QuestionsWhy do my reduced engine power light keeps coming on? (1 answer)
I done changed the accelerator pedal,the maf sensor and the throttle body,what else could it be?
Someone pulled 4,6 plug wire off without her knowing when it started it was missing bad she held it to the floor. Now it's flooding really bad and white smoke out the tail pipe and smells like raw gas. I change number 1 injection the plugs and oil didn't help getting gas in my oil now
My heat and air only blows out whenever I am driving about 50. Even then it isn't very much air.
2004 Pontiac Grand Prix RecallsEngine Oil Leaks Onto Exhaust Manifold
Engine oil can leak onto the exhaust manifold, causing a fire hazard. This concern was addressed in previous recall notifications, but improvements to the repair have been made. Dealers will make improved repairs free of charge to resolve the concern.
Excess weight on the key ring can cause the ignition switch to move out of the run position without warning, turning off the engine. This defect can also affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. Dealers will provide two replacement key rings and key cover on all ignition keys to correct this concern.
In temperatures between -22 and -40 degrees F, and if one of the accelerator pedal return springs breaks, the engine may not return to idle within three seconds as required. If this were to happen, more braking effort may be needed to stop the vehicle. Dealers will replace the accelerator pedal assembly. The recall began March 8, 2005. The GM recall number is 05018.