GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Uplander Ext. 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Evaporative Emission Hoses/Pipes Replacement - Engine/Chassis

Removal Procedure

    Caution: Refer to Nylon Fuel Lines Caution in the Preface section.

    Warning: In order to Reduce the Risk of Fire and Personal Injury:

       • If nylon fuel pipes are nicked, scratched or damaged during installation, Do Not attempt to repair the sections of the nylon fuel pipes. Replace them.
       • When installing new fuel pipes, Do Not hammer directly on the fuel harness body clips as it may damage the nylon pipes resulting in a possible fuel leak.
       • Always cover nylon vapor pipes with a wet towel before using a torch near them. Also, never expose the vehicle to temperatures higher than 115°C (239°F) for more than one hour, or more than 90°C (194°F) for any extended period.
       • Before connecting fuel pipe fittings, always apply a few drops of clean engine oil to the male pipe ends. This will ensure proper reconnection and prevent a possible fuel leak. (During normal operation, the O-rings located in the female connector will swell and may prevent proper reconnection if not lubricated.)

    Caution: Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering the open pipes and passages.


    Object Number: 1682041 Size: SH
  1. Remove the engine and transmission as an assembly. Refer to Engine Replacement .
  2. Disconnect the fuel feed (1) and evaporative emission (EVAP) (2) pipes from the fuel tank. Refer to Plastic Collar Quick Connect Fitting Service .

    3. Object Number: 1682380 Size: SH
  3. Remove the fuel/EVAP pipe clip nut.
  4. Perform the following procedures if equipped with auxiliary rear air and heat.
    5. 4.1. Disconnect the rear heater and A/C pipes from the rear heating, ventilation, and air conditioning (HVAC) module. Refer to Auxiliary HVAC Module Replacement .
    4.2. Move the rear heater and A/C pipes in order to remove the fuel pipes.

    Object Number: 1682383 Size: SH
  5. Remove the fuel/EVAP pipe clip from the stud.

    6. Object Number: 1682384 Size: SH
  6. Remove the fuel/EVAP pipe clips from the studs.

    7. Object Number: 1544726 Size: SH
  7. Remove the fuel and EVAP pipes (1).
  8. Inspect the pipes for bends, kinks, and cracks.
  9. Replace the pipe or pipes as required.

Installation Procedure

    Object Number: 1544726 Size: SH
  1. Install the fuel and EVAP pipes (1).

    2. Object Number: 1682384 Size: SH
  2. Install the fuel/EVAP pipe clips to the studs.

    3. Object Number: 1682383 Size: SH
  3. Install the fuel/EVAP pipe clip to the stud.

    4. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1682380 Size: SH
  4. Install the fuel/EVAP pipe clip nut and tighten to 20 N·m (15 lb ft) .
  5. Perform the following procedures if equipped with auxiliary rear air and heat.
    6. 5.1. Move the rear heater and A/C pipes into their original position.
    5.2. Connect the rear heater and A/C pipes to the rear HVAC module. Refer to Auxiliary HVAC Module Replacement .

    Object Number: 1682041 Size: SH
  6. Connect the fuel feed (1) and EVAP (2) pipes to the fuel tank. Refer to Plastic Collar Quick Connect Fitting Service .
  7. Install the engine and transmission as an assembly. Refer to Engine Replacement .