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 MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 216 (ENGINE CONTROLS AND FUEL - 3.6L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSFUEL PRESSURE SENSOR REPLACEMENT (LLT)REMOVAL PROCEDURE
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Removal Procedure
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Removal Procedure
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
- Relieve the fuel system pressure. Refer to Fuel Pressure Relief (With High Pressure Pump - LLT) .
- Remove the cross vehicle brace. Refer to Cross Vehicle Brace Replacement (DX) .
- Remove the intake manifold. Refer to Intake Manifold Replacement .
- Remove the foam insulator from the fuel rails.
- Disconnect the fuel injector wiring harness electrical connector (1) from the fuel injection fuel rail fuel pressure sensor.
- Place a clean shop towel under the fuel injection fuel rail pressure sensor to fuel rail location.
- Using a 27 mm socket, remove the fuel pressure sensor (1) from the fuel injection fuel rail (2). Discard the fuel pressure sensor.
- Allow any fuel to drain from the fuel rail and pressure sensor location.
- Dry the sealing cone in the fuel rail and the area around the sensor joint with a lint free cloth.
- Inspect the sealing cone in the fuel rail. The surface should be free of fuel, debris, and burrs.
IMPORTANT:
Applying force to the plastic housing of the sensor will destroy the sensor. To tighten or loosen, only apply force to the attached hexagon.
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.