GM Service Manual Online
For 1990-2009 cars only

Evaporative Emission Hoses/Pipes Replacement - Engine/Chassis Front

Removal Procedure

Important: Clean all fuel and evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.


    Object Number: 1238587  Size: SH
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  2. Disconnect the fuel feed pipe (1) at the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .
  3. Disconnect the evaporative emission (EVAP) canister purge pipe (2). Refer to Plastic Collar Quick Connect Fitting Service .
  4. Cap the fuel rail and EVAP pipes.
  5. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  6. Object Number: 1238747  Size: SH
  7. Remove the fuel pipe bracket nut.
  8. Remove the fuel pipe bracket from the bellhousing stud.

  9. Object Number: 1549616  Size: SH
  10. Remove the fuel hose/pipe clip from the bracket on the automatic transmission.
  11. If equipped with 4-wheel drive (4WD), remove the fuel hose/pipe clip from the bracket on the transfer case.
  12. Remove the front fuel tank. Refer to Fuel Tank Replacement .

  13. Object Number: 1224406  Size: SH
  14. Remove the fuel line bracket nuts.
  15. Remove the fuel/EVAP line bundle.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1224406  Size: SH
  1. Install the fuel/EVAP line bundle.
  2. Install the fuel line bracket nuts.
  3. Tighten
    Tighten the bolt to 12 N·m (106 lb in).

  4. Install the front fuel tank. Refer to Fuel Tank Replacement .

  5. Object Number: 1549616  Size: SH
  6. If equipped with 4WD, install the fuel hose/pipe clip to the bracket on the transfer case.
  7. Install the fuel hose/pipe clip to the bracket on the automatic transmission.

  8. Object Number: 1238747  Size: SH
  9. Install the fuel pipe bracket to the bellhousing stud.
  10. Install the fuel pipe bracket nut.
  11. Tighten
    Tighten the nut to 10 N·m (89 lb in).

  12. Lower the vehicle.

  13. Object Number: 1238587  Size: SH
  14. Remove the caps from the fuel rail and EVAP pipe.
  15. Connect the EVAP canister purge pipe (2). Refer to Plastic Collar Quick Connect Fitting Service .
  16. Connect the fuel feed line (1) to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service .
  17. Install the fuel fill cap.
  18. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  19. Use the following procedure in order to inspect for leaks:
  20. 14.1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    14.2. Turn the ignition OFF for 10 seconds.
    14.3. Turn the ignition ON, with the engine OFF.
    14.4. Inspect for fuel leaks.

Evaporative Emission Hoses/Pipes Replacement - Engine/Chassis Intermediate

Removal Procedure

Important: Clean all fuel and evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.


    Object Number: 385766  Size: SH
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  2. Remove the spare tire stowage lock cylinder.

  3. Object Number: 385791  Size: SH
  4. Remove the spare tire.
  5. Drain the rear fuel tank. Refer to Fuel Tank Draining .
  6. Remove the rear exhaust insulator.

  7. Object Number: 871929  Size: SH
  8. Remove the spare tire hoist crossmember bolts and crossmember.

  9. Object Number: 1372543  Size: SH
  10. Disconnect the evaporative emission (EVAP) canister quick connect fittings. Refer to Plastic Collar Quick Connect Fitting Service .

  11. Object Number: 1372710  Size: SH
  12. Disconnect the fuel and EVAP intermediate lines from the front tank. Refer to Plastic Collar Quick Connect Fitting Service .

  13. Object Number: 1372719  Size: SH
  14. Disconnect the fuel pressure sensor electrical connector (1).

  15. Object Number: 1224381  Size: SH
  16. Support the fuel tank with a suitable jack.
  17. Notice: Refer to Damage to Fuel Tank Straps Notice in the Preface section.

  18. Remove the fuel tank strap bolts.
  19. Remove the fuel tank straps.
  20. With the aid of an assistant, lower the rear tank until the intermediate line connections can be reached.

  21. Object Number: 1224396  Size: SH
  22. Disconnect the fuel and EVAP intermediate lines from the rear tank. Refer to Plastic Collar Quick Connect Fitting Service .
  23. Remove the fuel and EVAP intermediate lines.
  24. Cap the fuel and EVAP lines in order to prevent possible EVAP/fuel system contamination.

Installation Procedure


    Object Number: 1224396  Size: SH
  1. Remove the caps from the fuel and EVAP lines.
  2. Install the fuel and EVAP intermediate lines.
  3. Connect the fuel and EVAP intermediate lines to the rear tank. Refer to Plastic Collar Quick Connect Fitting Service .

  4. Object Number: 1224381  Size: SH
  5. With the aid of an assistant, completely raise the rear tank.
  6. Notice: Refer to Fastener Notice in the Preface section.

  7. Install the fuel tank straps.
  8. Install the fuel tank strap bolts.
  9. Tighten
    Tighten the bolts to 40 N·m (30 lb ft).

  10. Remove the adjustable jack from under the fuel tank.

  11. Object Number: 1372719  Size: SH
  12. Connect the fuel pressure sensor electrical connector (1).

  13. Object Number: 1372710  Size: SH
  14. Connect the fuel and EVAP intermediate lines to the front tank. Refer to Plastic Collar Quick Connect Fitting Service .

  15. Object Number: 1372543  Size: SH
  16. Connect the EVAP canister quick connect fittings. Refer to Plastic Collar Quick Connect Fitting Service .

  17. Object Number: 871929  Size: SH
  18. Install the spare tire hoist crossmember and bolts.
  19. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 385791  Size: SH
  20. Install the rear exhaust insulator.
  21. Remove the spare tire.

  22. Object Number: 385766  Size: SH
  23. Install the spare tire stowage lock cylinder.

  24. Object Number: 300318  Size: SH
  25. Install the fuel tank filler housing.
  26. Install the fuel tank filler housing to fuel tank fill pipe bolts.
  27. Tighten
    Tighten the bolts to 2.3 N·m (20 lb in).


    Object Number: 853731  Size: SH
  28. Install the fuel tank filler housing to body TORX® screws (1) and retainer (2).
  29. Tighten
    Tighten the screws to 2.3 N·m (20 lb in).

  30. Refill the fuel tank.
  31. Install the fuel fill cap.
  32. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  33. Use the following procedure in order to inspect for leaks:
  34. 21.1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    21.2. Turn the ignition OFF for 10 seconds.
    21.3. Turn the ignition ON, with the engine OFF.
    21.4. Inspect for fuel leaks.