GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1732395  Size: SH
  1. Remove the fuel filter and bracket. Refer to Fuel Filter Assembly Replacement .
  2. Remove the intake air heater. Refer to Intake Air Heater Replacement .
  3. Remove the fuel injection fuel return pipe clips (1).

  4. Object Number: 1732415  Size: SH
  5. Disconnect the fuel injection fuel return pipe from the fuel injectors.

  6. Object Number: 1872059  Size: SH
  7. Disconnect the fuel injection fuel return pipe from the fuel injection fuel feed manifold.
  8. Important: Note the routing of the fuel injection fuel return pipe under/behind the engine wiring harness.

  9. Remove the fuel injection fuel return pipe from the engine.

Installation Procedure


    Object Number: 1872059  Size: SH
  1. Position the fuel injection fuel return pipe to the engine. Ensure to route the fuel injection fuel return pipe under/behind the engine wiring harness.
  2. Connect the fuel injection fuel return pipe to the fuel injection fuel feed manifold.

  3. Object Number: 1732415  Size: SH
  4. Connect the fuel injection fuel return pipe to the fuel injectors.

  5. Object Number: 1732395  Size: SH
  6. Install the fuel injection fuel return pipe clips (1).
  7. Install the intake air heater. Refer to Intake Air Heater Replacement .
  8. Install the fuel filter and bracket. Refer to Fuel Filter Assembly Replacement
  9. Prime the fuel system. Refer to Fuel System Priming .
  10. Start the engine. If the engine stalls, repeat the above step.
  11. Once the engine starts, inspect for fuel leaks.