GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1661024  Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  2. Remove the secondary air injection (AIR) check valve. Refer to Secondary Air Injection Check Valve Replacement .
  3. Disconnect the positive crankcase ventilation (PCV) foul air tube quick connect fitting from the camshaft cover. Refer to Plastic Collar Quick Connect Fitting Service .
  4. Remove the ignition coils. Refer to Ignition Coil Replacement - Bank 1 .

  5. Object Number: 522725  Size: SH
  6. Loosen the camshaft cover bolts.
  7. Remove the camshaft cover.
  8. Discard the camshaft cover perimeter seals and spark plug seals if there is any evidence of damage or if the seal comes out of the groove in the cover during removal.
  9. Clean and inspect the camshaft cover. Refer to Camshaft Cover Cleaning and Inspection .

Installation Procedure


    Object Number: 522725  Size: SH

    Important: Be careful to prevent the exposed section of the camshaft cover seal from being damaged by the edge of the cylinder head casting.

  1. Install the camshaft cover seal as required.
  2. Install the camshaft cover.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Tighten the camshaft cover bolts.
  5. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  6. Install the ignition coils. Refer to Ignition Coil Replacement - Bank 1 .

  7. Object Number: 1661024  Size: SH
  8. Connect the PCV foul air tube quick connect fitting to the camshaft cover. Refer to Plastic Collar Quick Connect Fitting Service .
  9. Install the AIR check valve. Refer to Secondary Air Injection Check Valve Replacement .
  10. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .