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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 973 (Engine Controls - 4.8L, 5.3L, & 6.0L (Introduction)) >> Repair Instructions >> Fuel Tank Replacement (Cab/Chassis - Front) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Clean the fuel and evaporative emission (EVAP) connections and surrounding area prior to disconnecting the lines in order to avoid possible system contamination.
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
  2. If equipped with a rear auxiliary tank, disconnect the fuel feed and EVAP quick connect fittings. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
  3. Cap the fuel feed and EVAP pipes in order to prevent possible system contamination.
    Fig 1: View Of Fuel Feed And Pressure Balance Lines
    GM1228187Courtesy of GENERAL MOTORS CORP.
  4. Loosen the fuel fill pipe clamp (2) at the tank.
  5. Loosen the vent pipe clamp (1) at the tank.
    6. Fig 2: View Of Fuel Fill Pipe Clamp & Vent Pipe Clamp
    GM1228174Courtesy of GENERAL MOTORS CORP.
  6. Remove the fuel fill pipe and vent pipe from the tank.
  7. Drain the fuel tank. Refer to Fuel Tank Draining Procedure (4.8L, 5.3L, and 6.0L Engine)  or Fuel Tank Draining Procedure (5.3L (L59) Engine) .
  8. Disconnect the fuel pressure sensor electrical connector (1).
  9. Disconnect the fuel sending unit electrical connector (1), perform the following:
    1. Disengage the gray retainer.
    2. Push down the black clip.
    3. Disconnect the connector.
    10. Fig 3: Fuel Pressure Sensor Electrical Connector & Fuel Sending Unit Electrical Connector
    GM1238183Courtesy of GENERAL MOTORS CORP.
  10. Remove the canister vent solenoid (CVS) line from the fuel tank clips.
  11. Disconnect the fuel feed and EVAP quick connect fittings from the sending unit. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
    12. Fig 4: Fuel Feed & EVAP Quick Connect Fittings At Sending Unit
    GM1228206Courtesy of GENERAL MOTORS CORP.
  12. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
    13. Fig 5: Fuel Tank Shield & Bolts (Cab/Chassis - Front)
    GM877744Courtesy of GENERAL MOTORS CORP.
  13. Remove the fuel tank shield bolts.
  14. Remove the fuel tank shield.
  15. Place a suitable adjustable jack under the fuel tank.
  16. Remove the fuel tank strap bolts.
  17. Remove the fuel tank straps.
  18. Lower the fuel tank.
    19. Fig 6: Fuel Tank, Strap & Bolts (Cab/Chassis - Front)
    GM1228169Courtesy of GENERAL MOTORS CORP.
  19. With the aid of an assistant, place the fuel tank in a suitable work area.
  20. Cap the fuel and EVAP pipes in order to prevent possible system contamination.
  21. If necessary, remove the sending unit. Refer to Fuel Sender Assembly Replacement (4.8L, 5.3L, and 6.0L Engines)  or Fuel Sender Assembly Replacement (5.3L (L59) Engine) .
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