Pontiac Problems

RepairPal has identified the most common problems with the Pontiac as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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Known Problems

Various issues with the electric power steering system may develop and could require replacement of steering column assembly.

The ignition switch may fail causing a no start condition. This is not generally a theft system (passlock) issue because the security light does not illuminate or flash.

The 30amp high speed cooling fan fuse may blow due to high start up loads associated with the high speed cooling fan motor. Our technicians tell us the high speed cooling fan wiring and fuse should be upgraded to a 40amp circuit to correct this concern. The fan wiring MUST be upgraded along with the fuse to handle the increased current flow.

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 catalytic converter may become plugged resulting in loss of engine power. General Motors has extended the catalytic convertor warranty on some models to 10 years or 120,000 miles. Please contact your local GM dealer to see if your vehicle is included.

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.

The engine vacuum hose to the MAP sensor may crack resulting in a vacuum leak causing the engine to run rough and/or stall.

The supercharger may develop a noise in the front section of the supercharger assembly. The is due to a worn coupler. Our technicians tell us that a remanufactured coupler section is available from aftermarket suppliers.

One or more of the power windows may stop working due to a failed window switch. Failed switches will require replacement.

The anti-lock brake (ABS) accumulator may fail causing loss of power brake assist. (The brake pedal will become very hard.)

Vehicles with a 3.5L or 3.9L V6 engine may develop an engine oil leak from the front crankshaft seal. Our technicians tell us a revised front crankshaft seal is available to correct this concern.

The rear light socket plate may fail causing a brake light or other rear light to stop working.

The ABS master cylinder assembly may fail internally causing the ABS light to illuminate.

The mode and temperature door actuators may fail causing improper air flow or temperature output from the heating and AC (HVAC) system.