GM Service Manual Online
For 1990-2009 cars only
  1. Turn OFF the engine and apply the parking brake.

  2. Object Number: 27616  Size: SH
  3. Place a suitable container under the filter drain hose.
  4. Open the drain valve (3).
  5. Start the engine and allow it to idle for one minutes or until clear fuel is observed.
  6. Close the drain valve (3) and stop the engine.
  7. Dispose of the drained mixture in a proper manner.