GM Service Manual Online
For 1990-2009 cars only

Fuel Manager/Filter Water Draining EFI

  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 the filter drain valve.
  5. Start the engine and allow it to idle for one minute or until clear fuel is observed. A scan tool can also be used to turn the fuel pump on.
  6. Close the filter drain valve (3) and stop the engine.
  7. Dispose of the drained mixture in a proper manner.
  8. If the Water In Fuel lamp comes on again, repeat procedure until all of the water is removed.