Pontiac G5 Problems

RepairPal has identified the most common problems with the Pontiac G5 as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

Refine by vehicle
Choose your vehicle
Known Problems

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 ignition module or an ignition coil may fail causing the engine to misfire which can cause the Check Engine Light to illuminate or begin flashing.

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

Front brake rotors can wear causing a pulsation felt in the brake pedal. Our technicians often recommend replacement of the front rotors and brake pads as the best option to correct this condition.

The speedometer may stop functioning with code P0722 stored in the powertrain control module (PCM). This may be caused by a worn speedometer gear due to coolant contamination of the transmission fluid. If contamination is found the radiator is most likely at fault. The transmission should also be thoroughly inspected and repaired or replaced as required.

Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.

Brake fluid can become dirty and may cause problems in the brake system; it should be flushed every 60,000 miles.