GM Service Manual Online
For 1990-2009 cars only

Special Tools

J-46594 Fuel Injector Puller

Removal Procedure


    Object Number: 1865288  Size: SH
  1. Remove the left side fuel injectors. Refer to Fuel Injector Replacement.
  2. Rotate the electrical connector lever locks (1) rearward.
  3. Disconnect the vehicle's engine wiring harness main electrical connectors (2) from the engine wiring harness main electrical connectors.
  4. Remove the positive crankcase ventilation (PCV) hose/pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement.
  5. Remove the auxiliary generator, if equipped. Refer to Auxiliary Generator Replacement.

  6. Object Number: 1335635  Size: SH
  7. Remove the upper valve rocker arm cover bolts.
  8. Remove the upper valve rocker arm cover.
  9. Remove the upper valve rocker arm cover gasket.
  10. Inspect the upper valve rocker arm cover gasket for damage, replace if necessary. Otherwise reuse the old gasket.

Installation Procedure


    Object Number: 1335635  Size: SH
  1. Install the valve rocker arm cover gasket.
  2. Install the upper valve rocker arm cover.
  3. Install the upper valve rocker arm cover bolts.
  4. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1411030  Size: SH
  5. Tighten the upper valve rocker arm cover bolts.
  6. Tighten
    Tighten the bolts in the sequence shown to 8 N·m (71 lb in).

  7. Install the auxiliary generator, if equipped. Refer to Auxiliary Generator Replacement.
  8. Connect the negative battery cables. Refer to Battery Negative Cable Disconnection and Connection.

  9. Object Number: 1865288  Size: SH
  10. Rotate the electrical connector lever locks (1) rearward.
  11. Disconnect the vehicle's engine wiring harness main electrical connectors (2) from the engine wiring harness main electrical connectors.
  12. Install the left side fuel injectors. Refer to Fuel Injector Replacement.