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Home >> Chevrolet >> 2010 >> Cutaway 6.6 6 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 6.6L (LMM) - Repair Instructions >> Repair Instructions >> Fuel Line Replacement - Chassis >> Installation Procedure

Installation Procedure

    Fig 1: View Of Fuel Pipe Bundle (Cab/Chassis)
    GM1228212Courtesy of GENERAL MOTORS CORP.
  1. Install the fuel pipe bundle using the following procedure:
    1. Install the fuel bundle to the chassis by guiding the pipes towards the rear of vehicle.
    2. Lift the fuel pipes, while guiding the forward portion of the pipes up towards the engine connections.
    2. CAUTION: Refer to Fastener Caution .
  2. Install the fuel bundle nuts to the chassis and tighten to 16 N.m (12 lb ft).
    3. Fig 2: View Of Fuel Feed And Return Lines At Fuel Tank (Pickup)
    GM1228124Courtesy of GENERAL MOTORS CORP.
  3. Connect the fuel feed and return lines to the fuel tank lines. Refer to PLASTIC COLLAR QUICK CONNECT FITTING SERVICE .
  4. Install the fuel system cooler, if necessary. Refer to FUEL COOLER REPLACEMENT .
    5. Fig 3: Identifying Fuel Bundle Clips & Transmission Brackets
    GM737687Courtesy of GENERAL MOTORS CORP.
  5. Connect the fuel bundle clips (2) to the transmission brackets (1).
    6. Fig 4: View Of EBCM/EHCU Assembly
    GM379478Courtesy of GENERAL MOTORS CORP.
  6. Tighten the EBCM bracket bolts (4) and tighten to 25 N.m (18 lb ft).
  7. Lower the vehicle.
    8. Fig 5: View Of Fuel Line Bracket & Nut
    GM1378748Courtesy of GENERAL MOTORS CORP.
  8. Install the fuel line bracket to the stud.
  9. Install the fuel line bracket nut and tighten to 16 N.m (12 lb ft).
  10. Connect the fuel feed and return lines. Refer to Metal Collar Quick Connect Fitting Service .
  11. Prime the fuel system. Refer to Fuel System Priming .
  12. Start the engine. If the engine stalls, repeat the above step.
  13. Once the engine starts, inspect for fuel leaks.
  14. Install the engine cover. Refer to Engine Cover Replacement .
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