GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 43094 Spark Plug Boot Puller

Removal Procedure

  1. Remove the automatic transaxle filler tube. Refer to Transmission Fluid Filler Tube and Seal Replacement in Automatic Transaxle-4T65E.

  2. Object Number: 289500  Size: SH
  3. Remove the 2 fuel injector sight shield nuts at the front of the fuel injector sight shield.
  4. Lift the fuel injector sight shield up at the front and slide out of the engine bracket.

  5. Object Number: 520839  Size: SH
  6. Remove the fuel injector sight shield bracket bolts.
  7. Remove the fuel injector sight shield bracket.

  8. Object Number: 233873  Size: SH
  9. Disconnect the PCV fresh air tube (2) from the right camshaft cover.
  10. Disconnect the engine wiring harness clips at the front of the right camshaft cover and position aside.
  11. Disconnect the oxygen sensor electrical connector and remove the connector end from the right camshaft cover.
  12. Remove the right ignition coil assembly from the right camshaft cover. Refer to Ignition Coil Replacement in Engine Controls-3.5L.

  13. Object Number: 369842  Size: SH

    Notice: Use only the spark plug boot special removal tool to remove the spark plug boots. Prying or using regular pliers could damage the boots.

  14. Remove the spark plug boots using the J 43094 .

  15. Object Number: 483170  Size: SH
  16. Remove the right camshaft cover retaining bolts.
  17. Important: The right camshaft cover perimeter and spark plug seals should be reused unless they are damaged or if the perimeter seal is pulled from its groove during removal.

  18. Lift the right camshaft cover off the right cylinder head evenly.
  19. If necessary, disassemble the camshaft cover. Refer to Camshaft Cover Disassemble .
  20. Clean and inspect the camshaft cover. Refer to Camshaft Cover Cleaning and Inspection in Engine Mechanical-3.5L Unit Repair.

Installation Procedure


    Object Number: 483170  Size: SH
  1. If necessary, assemble the camshaft cover. Refer to Camshaft Cover Assemble in Engine Mechanical 3.5L Unit Repair Manual.
  2. Wipe the right cylinder head sealing surface with a clean, lint-free cloth.
  3. Inspect the right camshaft cover perimeter and spark plug seals for damage. Check to make sure the perimeter seal is not pulled from its groove. Replace the seals if they are damaged or pulled from the groove.
  4. Place the right camshaft cover in position on the cylinder head.
  5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Install the right camshaft cover retaining bolts.
  7. Tighten
    Tighten the right camshaft cover retaining bolts to 9 N·m (80 lb in).


    Object Number: 326350  Size: SH
  8. Push the spark plug boots onto the ignition coil assembly.
  9. Install the right ignition coil assembly to the right camshaft cover. Refer to Ignition Coil Replacement in Engine Controls-3.5L.

  10. Object Number: 233873  Size: SH
  11. Connect the PCV fresh air tube (2) to the right camshaft cover.
  12. Connect the oxygen sensor electrical connector and install the connector end to the right camshaft cover.
  13. Connect the engine wiring harness clips at the front of the right camshaft cover.

  14. Object Number: 520839  Size: SH
  15. Install the fuel injector sight shield bracket.
  16. Install the fuel injector sight shield bracket bolts.
  17. Tighten
    Tighten the fuel injector sight shield bracket bolts to 8 N·m (71 lb in).


    Object Number: 289500  Size: SH
  18. Insert the tab of the fuel injector sight shield under the engine bracket.
  19. Lower the fuel injector sight shield.
  20. Align the holes in the fuel injector sight shield with the studs.
  21. Install the 2 fuel injector sight shield nuts onto the studs.
  22. Tighten
    Tighten the fuel injector sight shield nuts to 3 N·m (27 lb in).

  23. Install the automatic transaxle filler tube. Refer to Transmission Fluid Filler Tube and Seal Replacement in Automatic Transaxle-4T65E.