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2004 Pontiac GTO Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Pontiac GTO

2004 Pontiac GTO Problems

A loose or worn gas cap or a faulty catalytic converter are two common items which can cause Check Engine Light to illuminate.

A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.

One or both secondary air injection check valves may become restricted causing poor air flow resulting in illumination of the Check Engine Light. It is often recommend to replace both check valves even if a fault code is set for only one bank of cylinders. Replacing only one valve may result in a return trip to the repair shop.

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2004 Pontiac GTO Questions

the car now smells like gas any ideas?

I have looked everywhere trying to find a pic on line anyone have pics

This only happens when the I drive the car, park it for 5mins jump back in and start it up. I have replaced the gas cap and its still pulling the codes

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