GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: In order to reduce the risk of fire and personal injury observe the following items:

   • Replace all nylon fuel pipes that are nicked, scratched or damaged during installation, do not attempt to repair the sections of the nylon fuel pipes
   • Do not hammer directly on the fuel harness body clips when installing new fuel pipes. Damage to the nylon pipes may result in a 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.
   • Apply a few drops of clean engine oil to the male pipe ends before connecting fuel pipe fittings. 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: Do not breathe the air through the EVAP component tubes or hoses. The fuel vapors inside the EVAP components may cause personal injury.

Important: To prevent EVAP system contamination, clean the pipe connections before disassembly.


    Object Number: 189079  Size: SH
  1. Remove the fuel hose/pipe bundle. Refer to Fuel Hose/Pipes Replacement - Filter to Engine .
  2. Remove the EVAP purge pipe from the fuel bundle.

Installation Procedure

  1. Install the EVAP purge pipe into the fuel bundle.

  2. Object Number: 189079  Size: SH
  3. Install the fuel hose/pipe bundle. Refer to Fuel Hose/Pipes Replacement - Filter to Engine .