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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 908 (Engine Controls And Fuel - 6.6L (LMM) - Introduction (2 Of 2)) >> Repair Instructions >> Fuel Injection Fuel Feed Pipe Replacement - Right Side >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Intake Air Valve Electrical Connector
    GM1871112Courtesy of GENERAL MOTORS CORP.
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  2. Remove the charge air cooler outlet pipe. Refer to Charge Air Cooler Outlet Pipe Replacement .
  3. Remove the fuel filter assembly. Refer to Fuel Filter Assembly Replacement .
  4. Remove the fuel filter/heater element housing to fuel feed block fuel hoses. Refer to Fuel Hose Replacement - Fuel Filter/Heater Element Housing to Fuel Feed Block .
  5. Disconnect the engine wiring harness electrical connector (1) from the exhaust gas recirculation (EGR) valve.
    6. Fig 2: View Of Engine Wiring Harness Electrical Connector, Bracket & Extension Clip
    GM1872490Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the engine wiring harness electrical connector (1) from the fuel injection fuel rail pressure sensor wiring harness extension electrical connector.
  7. Remove the fuel injection fuel rail pressure sensor wiring harness extension retainer (3) from the bracket.
  8. Remove the engine wiring harness bracket bolts and remove the bracket (2).
  9. Reposition the engine wiring harness slightly in order to access the front fuel injection fuel feed pipe.
    10. Fig 3: View Of Fuel Injector Pipes
    GM1335614Courtesy of GENERAL MOTORS CORP.
  10. 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.
  11. Spray lithium grease, GM P/N 12346293 or equivalent, between the fuel injector line and fittings to assist in containing any debris during removal.
    12. 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.
  12. Remove the fuel injector pipes.
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