Fuel Injection Fuel Rail Assembly Replacement - Bank 1

Fuel Injection Fuel Rail Assembly Replacement - Bank 1

Removal Procedure




1. Remove the heater outlet pipe.
2. Remove the fuel filter assembly.
3. Remove the turbocharger coolant outlet pipe.
4. Disconnect the engine wiring harness electrical connector (1) from the fuel injection fuel rail fuel pressure sensor wiring harness extension.
5. Remove the fuel injection fuel rail fuel pressure sensor wiring harness extension clip (3) from the wiring harness bracket.
6. Remove the wiring harness bracket bolts and bracket (2).




7. Prior to removing the fuel injection fuel feed pipes, use compressed air to blow any debris from between the injector line and fittings. Wipe the fittings clean of debris.
8. Spray lithium grease, GM P/N 12346293 or equivalent, between the fuel injector line and fittings to assist in containing any debris during removal.

Notice: DO NOT use compressed air to clean debris from the fuel injector inlet after the fuel line is removed. Using compressed air can allow debris to enter the fuel injector inlet and damage the fuel injector.

9. Remove the fuel injection fuel feed pipes.




10. Loosen the right fuel rail fuel feed pipe fitting (4) at the fuel rail.




11. Remove the fuel injection fuel rail bolts.
12. Remove the fuel rail.

Installation Procedure




1. Position the fuel injection fuel rail to the intake manifold.

Notice: Refer to Fastener Notice.

2. Install the fuel injection fuel rail bolts.

Tighten the bolts to 25 N.m (18 lb ft).




3. Tighten the right fuel rail fuel feed pipe fitting (4) at the fuel rail.

Tighten the fittings to 41 N.m (30 lb ft).






Notice: Ensure proper torquing of the fuel injector line. An under-torqued fuel injector line will not seal properly and an over-torqued fuel injector line may damage the fuel injector fitting. An improperly sealed or damaged fuel injector line or fuel injector fitting will cause a fuel leak.

4. Install the fuel injector pipes.

Tighten the fittings to 41 N.m (30 lb ft).




5. Position the wiring harness bracket (2) and install the bolts.

Tighten the bolts to 24 N.m (18 lb ft).

6. Connect the engine wiring harness electrical connector (1) to the fuel injection fuel rail fuel pressure sensor wiring harness extension.
7. Install the fuel injection fuel rail fuel pressure sensor wiring harness extension clip (3) to the wiring harness bracket.
8. Install the turbocharger coolant outlet pipe.
9. Install the fuel filter assembly.
10. Install the heater outlet pipe.
11. Prime the fuel system. Refer to Fuel System Priming.
12. Start the engine. If the engine stalls, repeat the above step.
13. Once the engine starts, inspect for fuel leaks.