GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Disconnect the evaporative emission (EVAP) chassis purge pipe from the engine purge pipe.

  3. Object Number: 739474  Size: SH
  4. Disconnect the EVAP chassis purge pipe (1) from the canister purge pipe.
  5. Remove the EVAP and fuel chassis bundle. Refer to Fuel Hose/Pipes Replacement - Chassis .

Installation Procedure

Caution: In order to reduce the risk of fire and personal injury, 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.

  1. Install the EVAP and fuel chassis bundle. Refer to Fuel Hose/Pipes Replacement - Chassis .

  2. Object Number: 739474  Size: SH
  3. Connect the EVAP chassis purge pipe (1) to the canister purge pipe.
  4. Connect the EVAP chassis purge pipe to the engine purge pipe.
  5. Lower the vehicle.