GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Firebird 🢒 Engine 🢒 Engine Cooling 🢒 Valve Rocker Arm and Push Rod Replacement

Removal Procedure
  1. Remove the rocker arm covers. Refer to Valve Rocker Arm Cover Replacement .

    2. Object Number: 439879 Size: SH

    Important: Place the valve rocker arms and pushrods in a rack so they can be reinstalled in the same locations from which they were removed.

  2. Remove the valve rocker arm bolts (2).
  3. Remove the valve rocker arms (1).

    4. Object Number: 439870 Size: SH
  4. Remove the valve rocker arm retainer (1).

    5. Object Number: 439864 Size: SH
  5. Remove the pushrods (1).

Installation Procedure

Tools Required

J 36660-A Torque Angle Meter


    Object Number: 439864 Size: SH

    Important: When installing valve rocker arms and pushrods, coat the bearing surfaces with prelube GM P/N 12345501 or equivalent. Install these components in the locations from which they were removed.

  1. Install the pushrods (1).

    2. Object Number: 439870 Size: SH
  2. Install the valve rocker arm retainer (1).

    3. Object Number: 439879 Size: SH
  3. Install the valve rocker arms (1).
  4. Apply GM P/N 12345493 or equivalent thread lock adhesive to the valve rocker arm bolt threads.

    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.

    Notice: This bolt is designed to permanently stretch when tightened, and therefore MUST be replaced anytime it is removed. The correct part number fastener must be used to replace this type of fastener. Do not use a bolt that is stronger in this application. If the correct bolt is not used, the parts will not be tightened correctly. The system or the components may be damaged.

  5. Install the valve rocker arm bolts (2).

    6. Tighten
    Tighten the valve rocker arm bolts (2) to 15 N·m (11 lb ft) + 90 degrees using J 36660-A .

  6. Install the rocker arm covers. Refer to Valve Rocker Arm Cover Replacement .