GM Service Manual Online
For 1990-2009 cars only

Fuel Injector Replacement LPG

Removal Procedure

    Caution: Refer to General Repair Instructions in the Preface section.

    Caution: Refer to Safety Glasses Caution in the Preface section.

    Caution: Refer to Fuel Pressure Relief in the Preface section.

  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief.

  2. Object Number: 1963352  Size: SH
  3. Disconnect the LPG injector electrical connectors (1).

  4. Object Number: 1963355  Size: SH

    Important: The hose clamps (1) require special pliers to remove and fit.

  5. Remove the hose clamps (1) from the LPG injector hoses.
  6. Discard the clamps

  7. Disconnect the LPG injector hoses from the fuel rail.

  8. Object Number: 1963354  Size: SH
  9. Remove the LPG injector to fuel rail retaining nuts (3).
  10. Remove the LPG injectors (1) from the fuel rail (2).

  11. Object Number: 1963353  Size: SH
  12. Remove the O-rings (1) from the LPG injector (2).
  13. Discard the O-rings.

Installation Procedure


    Object Number: 1963353  Size: SH
  1. Install the NEW O-rings (1) to the NEW LPG injector (2).

  2. Object Number: 1963354  Size: SH
  3. Position the NEW LPG injector (1) to the fuel rail (2).
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the NEW LPG injector to fuel rail retaining nuts (3).
  6. Tighten
    Tighten the nuts to 5  N·m (44  lb in).


    Object Number: 1963355  Size: SH

    Important: The hose clamps (1) require special pliers to remove and fit.

  7. Secure the NEW LPG injector hose clamps (1).

  8. Object Number: 1963352  Size: SH
  9. Install the LPG injector electrical connectors (1).
  10. Start the vehicle and inspect for LPG fuel leaks at the serviced fitting's using the combustible gas detector or an equivalent liquid leak detector.