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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 47 (ENGINE CONTROLS - SYSTEM & COMPONENT TESTING - 4.3)FUEL SYSTEMSFUEL SYSTEM CLEANINGCLEANING PROCEDURES
2006 Chevrolet Suburban C1500, 5.3 Z

Cleaning Procedures

2006 Chevrolet Suburban C1500, 5.3 ZSECTION Cleaning Procedures
WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect negative battery cable.
  2. Remove fuel sending unit assembly.
  3. Inspect fuel strainer. Replace a contaminated strainer and inspect fuel pump.
  4. Inspect fuel pump inlet for dirt and debris. Replace fuel pump if you find dirt or debris in fuel pump inlet.
    5. NOTE: When flushing fuel tank, handle fuel and water mixture as a hazardous material. Handle fuel and water mixture in accordance with all applicable local, state and federal laws and regulations.
  5. Flush fuel tank with hot water.
  6. Pour water out of fuel sender assembly opening.
  7. Rock the tank to be sure that removal of the water from tank is complete.
  8. Install sending unit.
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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.