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 REPLACEMENTINSTALLATION PROCEDURE

2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation 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: Identifying Fuel Pipe/Hose Components

Courtesy of GENERAL MOTORS CORP.

Install the fuel filler pipe to the vehicle.
Install the push pin fastener (5).
Uncap the fuel tank.
Install the fuel hose (2) to the tank.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Tighten the fuel fill hose clamp (1).
Tighten: Tighten the clamp to 2.5 N.m (22 lb in).

Fig 2: Removing/Installing Fuel Fill Pipe Ground Strap

Courtesy of GENERAL MOTORS CORP.

Install the fuel fill pipe ground strap bolt (3).
Tighten: Tighten the bolt to 10 N.m (89 lb in).
Lower the vehicle.

Fig 3: Removing/Installing Fuel Fill Pipe Bracket Nuts

Courtesy of GENERAL MOTORS CORP.

Install the fuel fill pipe bracket nut (2).
Tighten: Tighten the nut to 10 N.m (89 lb in).

Fig 4: Removing/Installing Fuel Fill Pipe Housing

Courtesy of GENERAL MOTORS CORP.

Install the fuel fill pipe housing.
Install the fuel fill cap.

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.