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Pontiac Problems

RepairPal has identified the most common problems for 19 Pontiac models based on complaints from 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

The Engine Control Module (ECM) can fail causing stalling, and engine and transmission drivability concerns.

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

The mass air flow or crankshaft position sensor may fail causing the engine to intermittently stall. It may be necessary for the engine to cool down before it will restart.

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.

An ignition coil may fail causing one of the cylinders to misfire. Each of the two banks of cylinders has its own coil assembly. If one ignition coil fails the coil assembly for the corresponding cylinder bank must be replaced.

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

The fuel pump may fail causing engine to stall and not restart.

The high pressure power steering hose will commonly leak fluid; it should be replaced.

The automatic transmission shifter may fail causing the ignition key to become stuck in the ignition lock cylinder. GM has recalled 2009 models for a shift cable issue which may or may not contribute to this issue. For more information on the recall please click here»

The Engine Control Module (ECM) can fail causing stalling, and engine and transmission drivability concerns.

An engine oil leak may develop from the rear of the engine. This is commonly caused by a failed oil pump drive o-ring seal. The leaking o-ring should be replaced to correct this concern.

The rubber section of an automatic transmission cooler line may develop a fluid leak . In some cases the leaking section of hose can be replaced. In others, the complete cooler line must be replaced to correct this concern.

The front lower control arm portion of the front suspension may cause a rattling noise over bumps and require replacement.

Problems with the anti-theft systems using the raised-chip key can prevent the car from starting. The wires in the steering column to the ignition lock cylinder tend to break. The the key and ignition lock cylinder must be replaced to correct this condition.