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.
Installation Procedure
- Install the fuel rail in the intake manifold.
- Apply a 5 mm (0.20 in) band of GM P/N 12345382 (Canadian P/N 10953489) threadlock, or equivalent, to the threads of the fuel rail bolts.
- Install the fuel rail mounting bolts.
Tighten:Β Tighten the fuel rail mounting bolts to 10 N.m (89 lb in).
- Install the fuel rail crossover pipe (3), O-rings (4), retaining bolts (1) and tabs (2), if removed.
Tighten:Β Tighten the fuel rail crossover pipe retaining screws to 3.8 N.m (34 lb in).
- Connect the fuel feed pipe.
- Reconnect the electrical connectors for the fuel injectors. A click will be felt or heard when the electrical connector is properly connected.
- Position the engine wiring harness on the intake manifold.
- Connect the EVAP purge valve and harness.
- Install the engine sight shield mounting bracket.
Tighten:Β Tighten the engine sight shield mounting bolts to 5.5 N.m (49 lb in).
- Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
- Use the following procedure to inspect for fuel leaks:
- Turn the ignition to the ON position for 2 seconds.
- Turn the ignition OFF for 10 seconds.
- Turn the ignition to the ON position once again.
- Inspect for any fuel leaks.
- Install the engine sight shield. Refer to Engine Sight Shield Replacement in Engine Mechanical - 6.0L.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
