Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1410 (ENGINE CONTROL SYSTEM - 4.2L (INTRODUCTION))REPAIR INSTRUCTIONSFUEL FILLER HOSE REPLACEMENTREMOVAL PROCEDURE

2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION 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.

Fig 1: Removing/Installing Fuel Fill Pipe Housing

GM730795

Courtesy of GENERAL MOTORS CORP.

Remove the fuel fill cap.
Remove the fuel fill pipe housing.

Fig 2: Removing/Installing Fuel Fill Pipe Bracket Nuts

GM730799

Courtesy of GENERAL MOTORS CORP.

Remove the fuel fill pipe bracket nut (2).
Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

Fig 3: Removing/Installing Fuel Fill Pipe Ground Strap

GM730802

Courtesy of GENERAL MOTORS CORP.

Remove the fuel fill pipe ground strap bolt (3).

Fig 4: Identifying Fuel Pipe/Hose Components

GM730806

Courtesy of GENERAL MOTORS CORP.

Loosen the fuel hose clamp (1).
Separate the fuel hose (2) from the tank.
Cap the open end of the fuel tank.
Remove the push pin fastener (5).
Remove the fuel filler pipe from the vehicle.

RENDER: 1.0x

NO RELATED

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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.