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 1913 (ENGINE CONTROLS AND FUEL - 3.6L (LCS) - INTRODUCTION)REPAIR INSTRUCTIONSFUEL FEED INTERMEDIATE PIPE REPLACEMENTREMOVAL 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 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the drive motor generator power inverter module. Refer to Drive Motor Generator Power Inverter Module Removal and Installation .
- Remove the high pressure pump shield. Refer to Fuel Pipe Shield Replacement .
- Relieve fuel system pressure. Refer to Fuel Pressure Relief (with CH 48027-100) or Fuel Pressure Relief (w/o CH 48027-100) .
- Remove the foam insulator from the pipes.
- Loosen the high pressure pipe fitting to the high pressure fuel pump (1).
- Loosen the high pressure pipe fitting to the left fuel rail (3).
- Remove the high pressure fuel pipe (2) from the vehicle. Discard the pipe.
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.