Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPONTIAC2006G6 GTP, 2D COUPE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 1 (ENGINE CONTROL SYSTEM - 3.5L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSFUEL SYSTEM CLEANING
2006 Pontiac G6 GTP, 2D Coupe, Standard
Fuel System Cleaning
2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Fuel System Cleaning
WARNING: This page is about a different variant/trim than selected.
IMPORTANT:
If the fuel filter is plugged, the fuel tank should be inspected internally and cleaned if necessary.
- Remove the fuel tank. Refer to Fuel Tank Replacement .
- Remove the fuel pump module assembly. Refer to Fuel Sender Assembly Replacement .
- Inspect the fuel pump module strainer. Replace the pump module assembly if the fuel strainer is contaminated.
- Flush the fuel tank with hot water.
- Pour the water out of the fuel sender assembly opening in the fuel tank. Rock the fuel tank in order to be sure that the removal of the water from the fuel tank is complete.
- Allow the tank to dry completely before reassembly.
- Disconnect the fuel feed pipe at the engine fuel rail. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
- Clean the fuel pipes by applying air pressure in the opposite direction of the fuel flow.
- Connect the fuel feed pipe to the engine fuel rail. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
- Install the fuel pump module assembly. Refer to Fuel Sender Assembly Replacement .
- Install the fuel tank. Refer to Fuel Tank Replacement .
IMPORTANT:
When flushing the fuel tank, handle the fuel and water mixture as a hazardous material. Handle the fuel and water in accordance with all applicable local, state, and federal laws and regulations.
IMPORTANT:
Only use oil-free compressed air to blow out the fuel pipes.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.