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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 971 (ENGINE CONTROLS - 8.1L (INTRODUCTION))REPAIR INSTRUCTIONSFILLER TUBE REPLACEMENT (CAB/CHASSIS - FRONT)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.
  1. If equipped with a rear auxiliary tank, disconnect the fuel and evaporative emission (EVAP) quick connect fittings. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
    Fig 1: View Of Fuel Feed And Pressure Balance Lines
    GM1228187Courtesy of GENERAL MOTORS CORP.
  2. Cap the fuel feed and EVAP pipes in order to prevent possible system contamination.
    3. Fig 2: View Of Fuel Fill Pipe Clamp & Vent Pipe Clamp
    GM1228174Courtesy of GENERAL MOTORS CORP.
  3. Loosen the fuel fill pipe clamp (2) at the tank.
  4. Loosen the vent pipe clamp (1) at the tank.
  5. Remove the fuel fill pipe and vent pipe from the tank.
  6. Cap the fuel and vent openings in the 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.