gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Fuel Rail|Description and Operation|Page 4862 > < Fuel Rail|Description and Operation
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Fuel Rail: Service and Repair

FUEL RAIL ASSEMBLY REPLACEMENT

REMOVAL PROCEDURE

IMPORTANT:  An 8-digit identification number (1) is located on the fuel rail. Refer to this identification number when servicing or when part
replacement is required.

1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure.
2. Remove the wire harness bracket nut (2).
3. Disconnect the evaporative emission (EVAP) purge solenoid electrical connector (1).
4. Disconnect the generator electrical connector (3).

5. Disconnect the following electrical connectors:

-

Manifold absolute pressure (MAP) sensor (1)

-

Knock sensor (2)

6. Remove the knock sensor harness connector from the intake manifold.

Fuel Rail|Description and Operation|Page 4862 > < Fuel Rail|Description and Operation