Removal Procedure
- Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
- Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
- Loosen the charged air cooler outlet duct to intake hose clamp.
- Remove the charged air cooler outlet duct from the intake.
- Remove the fuel injection control module. Refer to Fuel Injector Control Module Replacement .
- Remove the exhaust gas recirculation (EGR) cooler tube. Refer to Exhaust Gas Recirculation Valve Cooler Replacement .
- Remove the heater outlet hose bolt from the bracket.
- Position the heater outlet hose out of the way.
- Remove the fuel filter bracket bolts.
- Reposition the fuel filter with bracket.
- Remove the positive crankcase ventilation (PCV) hose/pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .
- Prior to removing the fuel injector pipes, use compressed air to blow any debris from between the injector line and fittings. Wipe the fittings clean of debris.
- Spray lithium grease, GM P/N 12346293 or equivalent, between the fuel injector line and fittings to assist in containing any debris during removal.
- Remove the right fuel injector pipes.
- Remove the upper valve rocker arm cover bolts.
- Remove the upper valve rocker arm cover.
- Remove the upper valve rocker arm cover gasket.
- Inspect the upper valve rocker arm cover gasket for damage, replace if necessary. Otherwise reuse the old gasket.
- If required, clean and inspect the upper valve rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection - Upper .
Important: Do not use a screwdriver or other tool to pry the hose loose. The hose can be torn or damaged. Loosen the hose by twisting.
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.
Installation Procedure
- Install the upper valve rocker arm cover gasket.
- Install the upper valve rocker arm cover.
- Install the upper valve rocker arm cover bolts.
- Tighten the upper valve rocker arm cover bolts in the sequence shown.
- Install the fuel injector pipes.
- Install the PCV hose/pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .
- Position the fuel filter with bracket to the rocker cover.
- Install the fuel filter bracket bolts.
- Position the heater outlet hose.
- Install the heater hose bracket bolt to the bracket.
- Install the EGR cooler tube. Refer to Exhaust Gas Recirculation Valve Cooler Replacement .
- Install the fuel injection control module. Refer to Fuel Injector Control Module Replacement .
- Install the charged air cooler outlet duct to the intake.
- Tighten the charged air cooler outlet duct to intake hose clamp.
- Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
- Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .
Notice: Refer to Fastener Notice in the Preface section.
Tighten
Tighten the bolts to 8 N·m (71 lb in).
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.
Tighten
Tighten the pipes to 41 N·m (30 lb ft).
Tighten
Tighten the bolts to 21 N·m (15 lb ft).
Tighten
Tighten the bolt to 21 N·m (15 lb ft).
Important: Lubricate the end of the duct prior to installation.
Tighten
Tighten the clamp to 6 N·m (53 lb in).
