Suburban 3/4 Ton 4WD V8-6.0L VIN U (2004)
Fuel: Service and Repair
FUEL SYSTEM CLEANING
1. Remove the sending unit.
2. Inspect the fuel strainer. Replace the sending unit if the strainer is contaminated.
3. Inspect the fuel pump inlet for dirt and debris. Replace the sending unit if dirt or debris is found in the fuel pump inlet.
4. Flush the fuel tank with hot water.
IMPORTANT: When flushing the fuel tank, handle the fuel and water mixture as a hazardous material. Handle the fuel and water mixture in
accordance with all applicable local, state, and federal laws and regulations.
5. Pour the water out of the sending unit opening. Rock the tank to be sure that removal of the water from the tank is complete.
6. Install the sending unit.
