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Home >> Cadillac >> 2005 >> STS 4.6 A, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.6L (LH2) - Introduction >> Repair Instructions >> Fuel Hose/Pipes Replacement - Chassis >> Installation Procedure
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Installation Procedure

  1. Clean any of the contamination from the male line ends and apply a few drops of clean engine oil.
  2. With the aid of an assistant, carefully guide the chassis fuel hose/pipes up through the engine compartment into position.
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
    4. Fig 1: Pulling Right Side Transmission Support Down
    GM818898Courtesy of GENERAL MOTORS CORP.
  4. Pull the right side transmission support down only enough to allow installation of the chassis fuel hose/pipes.
    5. Fig 2: View Of Transmission Support Bolts
    GM818897Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  5. Install the bolts securing the transmission support to the underbody.

    Tighten:  Tighten the transmission support bolts to 60 N.m (44 lb ft).

    6. Fig 3: Locating Fuel/Brake Pipe Retainers
    GM785812Courtesy of GENERAL MOTORS CORP.
  6. Install the bolt securing the fuel filter bracket to the body.

    Tighten:  Tighten the fuel filter bracket bolt to 9 N.m (80 lb in).

  7. Push upward in order to connect the fuel/brake bundle chassis pipe retainer to the underbody.
  8. Complete the following in order to install the chassis hose/pipes to the retainers (2) located at the rearward portion of the rail:
    1. Install the chassis hose/pipes into the retainers (2).
    2. Close the retainers (2) at the top.
    3. Insert the retainers (2) into the rail.
  9. Install the chassis hose/pipes into the retainers (1) located at the forward portion of the rail.
  10. Close the retainers.
    11. Fig 4: Locating Fuel/Brake Bundle Chassis Pipe Retainers Locking Mechanisms
    GM818896Courtesy of GENERAL MOTORS CORP.
  11. Push the locking mechanism (1) inward in order to engage the fuel/brake bundle chassis pipe retainers to the rail.
    12. Fig 5: View Of Fuel Filter And Quick-Connect Fittings
    GM1272549Courtesy of GENERAL MOTORS CORP.
  12. Refer to Quick Connect Fitting(s) Service (Plastic Collar)  and Quick Connect Fitting(s) Service (Metal Collar)  in order to connect the following quick connect fittings to the chassis bundle:
    • The fuel filter (2)
    • The fuel hose
    • The fuel EVAP hose
  13. Lower the vehicle.
    14. Fig 6: View Of Hose Retainers
    GM1235105Courtesy of GENERAL MOTORS CORP.
  14. Insert the chassis hose/pipes into the retainers (1 and 2) located at the rear of the engine and the front of dash.
  15. Close the retainers.
    16. Fig 7: View Of EVAP Emissions Purge Valve Line & Electrical Connector
    GM1239219Courtesy of GENERAL MOTORS CORP.
  16. Connect the EVAP quick connect fitting (2). Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
    17. Fig 8: View Of Fuel Line-To-Fuel Rail Connection
    GM1234881Courtesy of GENERAL MOTORS CORP.
  17. Connect the fuel feed pipe (1) to the fuel rail. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
  18. Check the fuel system for leaks.
  19. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 4.6L (LH2).
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