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HOMESERVICE MANUALSGMC2011ACADIA SLT, FWDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE CONTROLS AND FUEL - 3.6L - REPAIR INSTRUCTIONSREPAIR INSTRUCTIONSFUEL INJECTION FUEL RAIL CROSSOVER TUBE REPLACEMENT (LLT)INSTALLATION PROCEDURE
2011 GMC Acadia SLT, FWD

Installation Procedure

2011 GMC Acadia SLT, FWDSECTION Installation Procedure
  1. Ensure that the fuel rail crossover pipe, right fuel rails fittings and left fuel rail fittings are clean and dry prior to assembly.
  2. Lubricate the pipes with silicon free engine oil GM P/N 12345610 (Canadian P/N 993193) or equivalent.
    3. Fig 1: Identifying Fuel Rail Crossover Pipe & Fuel Rail Fittings
    GM1977748Courtesy of GENERAL MOTORS CORP.
  3. Position the fuel rail crossover pipe (1) to the right fuel rails fitting (2) and left fuel rail fitting (3).
    4. CAUTION:

    Refer to Fastener Caution .

  4. Tighten the fuel rail crossover pipe fittings.
    1. Tighten the fittings first pass to 16 N.m (12 lb ft).
    2. Tighten the fittings final pass to 32 N.m (24 lb ft).
    5. NOTE:

    If a fuel leak accrues at the right fuel rail fitting (2) or left fuel rail fitting (3), that component will need to be replaced.

  5. Inspect for leaks using the following procedure:
    1. Turn ON the ignition, with the engine OFF for 2 seconds.
    2. Turn OFF the ignition, for 10 seconds.
    3. Turn ON the ignition, with the engine OFF.
    4. Inspect for fuel leaks.
  6. Install the low side fuel pressure service port cap.
  7. Install the fuel tank cap.
  8. Install the high pressure pump shield. Refer to Fuel Pipe Shield Replacement .
  9. Install the fuel injection sight shield. Refer to FUEL INJECTOR SIGHT SHIELD REPLACEMENT .
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.