2008 Pontiac G5 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2008 Pontiac G5

2008 Pontiac G5 Problems

Ignition Key Stuck Due to Failed Shifter

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»

Ignition Module or Coil May Fail Causing Engine Misfire


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.

Check Engine Light Due to Gas Cap Issue

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

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2008 Pontiac G5 Questions

Will a p0121 code cause me to fail emissions testing? (1 answer)

I was driving the other night and when i put my car in park my engine light came on. I used a obd2 scanner to find out it was a p0121 throttle code. Is this something that will cause me to fail emissions considering the engine light is on

What is the manufactures recommendation to change timing chain? (1 answer)

There is a knocking sound in my 2008 G5. Diagnostic code recommended changing the knocker sensor. Knocker sensor replaced. Knocking sound remains.

Why will my fan not kick on when my engines gets hot? (1 answer)

My fan will not kick on....even when my car gets to 205 degrees. I have replaced fuses...and nothing! Please help. I was told that it could be a relay switch or a sensor to the fan. I do not know where this is located...can anyone tell me where to find this?

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2008 Pontiac G5 Recalls

Ignition Lock Cylinder Concern

In order to help prevent rollaway type accidents, all late model vehicles are designed so that the transmission must be in park (or reverse for a manual transmission) before the ignition switch can be turned to the "off" position and the key removed. These vehicles are being recalled because the key can be removed when the ignition is not in the "off" position, increasing the risk of a rollaway type accident. Dealers will inspect the vehicle and replace the ignition lock cylinder as necessary. 2 new keys will also be supplied and programmed as required.

Potential Fuel Leak from Fuel Tank Area

Certain vehicles originally sold in, or currently registered in, the states of Arkansas, Arizona, California, Nevada, Oklahoma, or Texas are being recalled because the plastic supply or return port on the fuel pump module may crack, resulting in a fuel leak. Fuel leakage in the presence of an ignition source may result in a fire. Dealers will replace the fuel pump module to correct this concern. The General Motors recall number is 12190.

Loss of Power Steering Assist

The driver may experience a sudden loss of power steering assist. If power steering assist is lost, it would require greater driver effort to steer the vehicle at low speeds, increasing the risk of a crash. Dealers will replace the electric power steering motor to correct this concern. This recall is being implemented on a rolling basis beginning March 29, 2010 trough November of 2010. The General Motors recall number is 10023.

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2008 Pontiac G5 Reviews

THIS HAS BEEN THE WORSE CAR I HAVE EVER OWNED....THEY SHOULD BE TAKEN OFF THE MARKET...MYIGNITION HAS WENT OUT AND ITS BEEN TWO WEEKS AND THE DEALERSHIP KEEPS CHARGING ME MORE AND MORE BUT THEY DONT KNOW HOW TO FIX
I've had my G5 for 2 years...and I absolutely love it!
I'm really liking my 2008 G5.

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