Sierra 3500 4WD V8-6.6L DSL Turbo (2007)
6. Disconnect the fuel rail fuel pressure sensor wiring harness extension (1) from the fuel rail fuel pressure sensor.
7. Prior to removal, clean the fuel rail fuel pressure sensor and surrounding area thoroughly with solvent, such as GM P/N 12377981 (Canadian P/N
10953463) or equivalent.
8. Using compressed air, thoroughly blow dry the sensor and surrounding area.
9. Remove the fuel rail fuel pressure sensor (2).
Installation Procedure
Notice: Refer to Fastener Notice.
1. Install the fuel rail fuel pressure sensor (2).
Tighten the sensor to 70 N.m (52 lb ft).
2. Connect the fuel rail fuel pressure sensor wiring harness extension (1) to the fuel rail fuel pressure sensor.
