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Home >> GMC >> 2002 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.5L >> Repair Instructions >> Fuel System Cleaning >> Removal Procedure
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Removal Procedure

CAUTION: Refer to BATTERY DISCONNECT CAUTION .
  1. Remove the negative battery cables.
  2. Remove the fuel from the tank. Refer to Fuel Tank Draining Procedure .
  3. Remove the fuel tank. Refer to Fuel Tank Replacement (Extended Cab Side Tank)  or Fuel Tank Replacement (Pickup Side Tank)  or Fuel Tank Replacement (Cab and Chassis Rear Tank)  or Fuel Tank Replacement (Cab and Chassis Side Tank) .
  4. Remove the fuel sender. Refer to Fuel Sender Assembly Replacement .
  5. Clean the fuel tank.

    Important:  The fuel tank should be replaced if the tank is rusted internally.

  6. Remove the fuel strainer or replace if necessary. Refer to Fuel Sender Assembly Replacement .
  7. Remove the fuel lift pump. Refer to Fuel Pump Replacement .
  8. Remove the fuel manager/filter. Refer to Fuel Filter/Heater Element Housing Replacement .
  9. Remove the fuel return line at the injection pump.
    • Use low air pressure to blow out the lines toward the rear of the vehicle.
    • Replace the pipes if they are rusted internally.
  10. Remove the fuel filter from the fuel manager housing. Refer to Fuel Filter Replacement .
  11. Wipe out the inside of the housing with a clean towel.
  12. Remove the heater element from the housing. Refer to Fuel Heater Element Replacement .
  13. Remove the water in fuel sensing element from the housing. Refer to Water-in-Fuel Sensor Replacement .
  14. Clean the inside of the filter housing with GM brake parts cleaner or equivalent.
  15. Dry the housing completely.
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