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Home >> Chevrolet >> 2009 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 24 (Engine Control System & Fuel System - 3.6L - Repair Instructions) >> Repair Instructions >> Fuel Pump Replacement (LLT) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2010 Saturn Outlook, 2010 GMC Acadia, 2010 Chevrolet Traverse, and 2010 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: The camshaft must be in the base circle position before the high pressure fuel pump is installed.
  1. Use the EN-48896:  alignment gage to ensure that the camshaft lobe is in the base circle position. At base circle the tool will be flush with the head.
  2. Lubricate the high pressure fuel pump cylinder head bore and roller lifter with camshaft prelube GM P/N 12345501 (Canadian P/N 992704) or equivalent.
    3. Fig 1: Identifying High Pressure Fuel Pump Components
    GM2221135Courtesy of GENERAL MOTORS CORP.
    NOTE: The high pressure fuel pump gasket has a retaining feature to hold the pump retaining bolts in place.
  4. Install the high pressure fuel pump roller lifter (5).
  5. Install a NEW high pressure fuel pump O-ring (3).
  6. Position the NEW high pressure fuel pump gasket (4) and bolts (1) to the fuel pump.
  7. Install the high pressure fuel pump (2). Force will be required while hand tightening the bolts.
    8. CAUTION: Refer to Fastener Caution .
  8. Tighten the high pressure fuel pump retaining bolts to 15 N.m (11 lb ft).
  9. Ensure the high pressure fuel pump and fuel rail fittings are clean prior to assembly.
  10. Install a NEW high pressure fuel pipe. Refer to Fuel Feed Intermediate Pipe Replacement (LLT) .
  11. Install the fuel feed pipe to the high pressure fuel pump. Refer to Fuel Feed Pipe Replacement (LLT) .
  12. Connect the high pressure fuel pump wiring harness.
  13. Install the fuel tank cap.
    14. NOTE: If a fuel leak accrues at the fuel rail, the fuel rail will need to be replaced.
  14. 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.
  15. Install the pressure relief cap to the fuel feed pipe.
  16. Install the intake manifold. Refer to INTAKE MANIFOLD REPLACEMENT .
  17. Install the high pressure fuel pump shield. Refer to Fuel Pipe Shield Replacement .
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