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 MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 1 (ENGINE CONTROLS - 3.9L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSFUEL SYSTEM CLEANINGCLEANING PROCEDURE
2006 Buick Terraza CXL, 3.5 L, AWD
Cleaning Procedure
2006 Buick Terraza CXL, 3.5 L, AWDSECTION Cleaning Procedure
WARNING: This page is about a different variant/trim than selected.
- Remove the fuel tank module. Refer to Fuel Tank Module Replacement (Short Wheel Base) or Fuel Tank Module Replacement (Long Wheel Base) .
- Inspect the fuel module strainer. Replace the module if the strainer is contaminated strainer and inspect the fuel pump.
- Inspect the fuel pump inlet for dirt and debris. Replace the module if you find dirt or debris in the fuel pump inlet.
- Flush the fuel tank with hot water.
- Pour the water out of the fuel module 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.
- Install the fuel tank module. Refer to Fuel Tank Module Replacement (Short Wheel Base) or Fuel Tank Module Replacement (Long Wheel Base) .
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.
RENDER: 1.0x
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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.