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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1415 (Engine Control System - 4.2L (Introduction)) >> Repair Instructions >> Fuel Tank Replacement (TrailBlazer, Envoy, Bravada, Rainier) >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure .
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the frame brace. Refer to Frame Brace Replacement (TrailBlazer, Envoy, Bravada) or Frame Brace Replacement (TrailBlazer EXT, Envoy XL) in Frame and Underbody.
  4. Remove the fuel tank shield, if equipped. Refer to Fuel Tank Shield Replacement (TrailBlazer, Envoy) or Fuel Tank Shield Replacement (TrailBlazer EXT, Envoy XL) in Frame and Underbody.
  5. Drain the fuel tank. Refer to Fuel Tank Draining Procedure .
    6. Fig 1: Locating Fuel Tank Electrical Connectors
    GM730919Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the fuel tank pressure sensor electrical connector (3).
  7. Disconnect the evaporative emission (EVAP) vent valve electrical connector (2).
    8. Fig 2: Disconnecting/Connecting EVAP Vapor & Vent Valve Pipes
    GM730716Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the EVAP vapor pipe (4) from the EVAP canister (3).
  9. Disconnect the EVAP vent valve pipe (2) from the EVAP canister (3).
    10. Fig 3: Disconnecting/Connecting Fuel Pipes
    GM730737Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the fuel return pipe and the fuel feed pipe (1). Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  11. Cap the fuel and EVAP pipes in order to prevent possible fuel system contamination.
    12. Fig 4: Removing/Installing Fuel Tank
    GM730792Courtesy of GENERAL MOTORS CORP.
  12. With the aid of an assistant, support the fuel tank.
    13. NOTE: Refer to Damage to Fuel Tank Straps Notice in Cautions and Notices.
  13. Remove the fuel tank strap attaching bolts.
  14. Remove the fuel tank straps.
  15. Carefully lower the fuel tank.
  16. Disconnect the fuel sender electrical connector.
  17. Remove the fuel tank.
  18. Place the fuel tank in a suitable work area.
  19. If the fuel tank is not being replaced, go to the Installation Procedure.
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