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.)


    Object Number: 1272602  Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  2. Disconnect the quick-connect fittings at the intake manifold and the EVAP canister purge valve. Refer to Plastic Collar Quick Connect Fitting Service .
  3. Remove the EVAP pipe.
  4. Cap the intake manifold pipe and the EVAP canister purge valve in order to prevent possible contamination.

Installation Procedure

  1. Remove the caps from the intake manifold pipe and the EVAP canister purge valve.
  2. Install the EVAP pipe to the intake manifold and the EVAP canister purge valve.

  3. Object Number: 1272602  Size: SH
  4. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .