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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1614 (Engine Control System & Fuel System - 4.3L - Repair Instructions) >> Repair Instructions >> Fuel System Cleaning
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Fuel System Cleaning

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the sending unit. Refer to Fuel Sender Assembly Replacement (Regular Cab w/26 Gal Tank)  or Fuel Sender Assembly Replacement (Regular Cab w/34 Gal Tank)  or Fuel Sender Assembly Replacement (Extended Cab w/26 Gal Tank) .
  2. Inspect the fuel strainer. Replace a contaminated strainer and inspect the fuel pump.
  3. Inspect the fuel pump inlet for dirt and debris. Replace the fuel pump if you find dirt or debris in the fuel pump inlet.
    4. 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.
  4. Flush the fuel tank with hot water.
  5. Pour the water out of the fuel sender assembly opening.
  6. Rock the tank to be sure that removal of the water from the tank is complete.
  7. Install the sending unit. Refer to Fuel Sender Assembly Replacement (Regular Cab w/26 Gal Tank)  or Fuel Sender Assembly Replacement (Regular Cab w/34 Gal Tank)  or Fuel Sender Assembly Replacement (Extended Cab w/26 Gal Tank) .
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