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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1611 (Engine Control System & Fuel System - 6.6L (LMM) - Repair Instructions) >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement - Bank 1 >> Removal Procedure
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Removal Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Engine Wiring Harness Electrical Connector, Bracket & Extension Clip
    GM1872490Courtesy of GENERAL MOTORS CORP.
  1. Remove the heater outlet pipe. Refer to Heater Outlet Hose Replacement (Non-HP2) .
  2. Remove the fuel filter assembly. Refer to Fuel Filter Assembly Replacement .
  3. Remove the turbocharger coolant outlet pipe. Refer to Turbocharger Coolant Hoses/Pipes Replacement (LMM 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. Fig 2: View Of Fuel Injector Pipes
    GM1335614Courtesy of GENERAL MOTORS CORP.
  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.
    9. CAUTION: 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. Fig 3: View Of Fuel Feed Pipe Fittings & Clamp Bolts
    GM1872372Courtesy of GENERAL MOTORS CORP.
  10. Loosen the right fuel rail fuel feed pipe fitting (4) at the fuel rail.
    11. Fig 4: View Of Fuel Rail & Bolts
    GM1872721Courtesy of GENERAL MOTORS CORP.
  11. Remove the fuel injection fuel rail bolts.
  12. Remove the fuel rail.
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