Removal Procedure
WARNING: This page is about a different variant/trim than selected.
- Remove the engine cover. Refer to Engine Cover Replacement .
- Remove the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement (4.3L, 4.8L, 5.3L, 6.0L) or Engine Coolant Fan Upper Shroud Replacement (6.6L) .
- If equipped, remove the auxiliary generator. Refer to Auxiliary Generator Replacement .
- Remove the glow plug module and bracket Refer to Glow Plug Control Module Replacement .
- Remove the positive crankcase ventilation (PCV) hose/pipe. Refer to Crankcase Ventilation Hoses/Pipes Replacement (LLY, LBZ) or Crankcase Ventilation Hoses/Pipes Replacement (LMM) .
- Remove the engine harness bracket bolts at the left front of engine and position out of the way.
- 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 fuel injector pipes.
NOTE:
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.