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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 971 (ENGINE CONTROLS - 8.1L (INTRODUCTION))REPAIR INSTRUCTIONSFILLER TUBE REPLACEMENT (PICKUP)REMOVAL PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION 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.
    Fig 1: View Of Fuel Tank Filler Housing To Body Screws & Retainer
    GM853731Courtesy of GENERAL MOTORS CORP.
  1. Remove the fuel tank filler housing to body screws (1) and retainer (2).
  2. If necessary, partially drain the fuel tank. Refer to Fuel Tank Draining Procedure .
    3. Fig 2: Identifying Fuel Filler Components
    GM300318Courtesy of GENERAL MOTORS CORP.
  3. Remove the fuel tank filler housing to fuel tank fill pipe screws.
  4. Remove the fuel tank filler housing.
  5. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
    6. Fig 3: Fuel Tank Fill Pipe Ground Wire (Pickup)
    GM1238144Courtesy of GENERAL MOTORS CORP.
  6. Remove the fuel tank fill pipe ground wire bolt (1).
  7. Remove the fuel tank fill pipe ground wire (3) anti-rotation tab from the frame hole.
  8. Reposition the fuel tank fill pipe ground wire and chassis harness ground wire (2).
    9. Fig 4: Rear Axle Vent Hose (Pickup)
    GM1238157Courtesy of GENERAL MOTORS CORP.
  9. Remove the rear axle vent hose from the clip on the fuel fill pipe bracket.
    10. Fig 5: Fuel Tank Fill Pipe Clamp At The Fuel Tank (Pickup)
    GM1228094Courtesy of GENERAL MOTORS CORP.
  10. Loosen the fuel tank fill pipe clamp (1) at the fuel tank.
  11. Disconnect the recirculation line from the sending unit. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  12. Remove the fuel tank fill pipe.
  13. Cap the opening on the fuel tank in order to prevent possible system contamination.
RENDER: 1.0x

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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.