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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 >> Installation Procedure
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Installation 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 Fuel Rail & Bolts
    GM1872721Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  1. Position the fuel injection fuel rail to the intake manifold.
  2. Install the fuel injection fuel rail bolts.

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

  3. Fig 2: View Of Fuel Feed Pipe Fittings & Clamp Bolts
    GM1872372Courtesy of GENERAL MOTORS CORP.
  4. Tighten the right fuel rail fuel feed pipe fitting (4) at the fuel rail.

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

  5. Fig 3: View Of Fuel Injector Pipes
    GM1335614Courtesy of GENERAL MOTORS CORP.
    CAUTION: 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.
  6. Install the fuel injector pipes.

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

  7. Fig 4: View Of Engine Wiring Harness Electrical Connector, Bracket & Extension Clip
    GM1872490Courtesy of GENERAL MOTORS CORP.
  8. Position the wiring harness bracket (2) and install the bolts.

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

  9. Connect the engine wiring harness electrical connector (1) to the fuel injection fuel rail fuel pressure sensor wiring harness extension.
  10. Install the fuel injection fuel rail fuel pressure sensor wiring harness extension clip (3) to the wiring harness bracket.
  11. Install the turbocharger coolant outlet pipe. Refer to Turbocharger Coolant Hoses/Pipes Replacement (LMM Outlet Pipe) .
  12. Install the fuel filter assembly. Refer to Fuel Filter Assembly Replacement .
  13. Install the heater outlet pipe. Refer to Heater Outlet Hose Replacement (Non-HP2) .
  14. Prime the fuel system. Refer to Fuel System Priming .
  15. Start the engine. If the engine stalls, repeat the above step.
  16. Once the engine starts, inspect for fuel leaks.