GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Remove the valve rocker covers. Refer to Valve Rocker Arm Cover Replacement.

  3. Object Number: 54392  Size: SH

    Important: Keep the components separated in order to install the components in the same location.

  4. Remove the rocker arm bolts.
  5. Remove the rocker arm pivot balls.
  6. Remove the rocker arms.
  7. Important: Keep the pushrods in order in order to install the pushrods in the original position.

  8. Remove the pushrods.

Installation Procedure


    Object Number: 54392  Size: SH
  1. Install the pushrods in the original location.
  2. • The intake pushrods are identified with yellow stripes and are 5 3/4 inches long.
    • Exhaust pushrods are identified with green stripes and are 6 inches long.
    • Ensure that the pushrods seat in the lifter.
  3. Install the rocker arms.
  4. Install the rocker arm pivot balls.
  5. Coat the bearing surfaces of the rocker arms and the pushrods with GM P/N 12345501 or GM P/N 88862586 (Canadian P/N 992704 or Canadian P/N 88862586) or the equivalent.

    Notice: Refer to Fastener Notice in the Preface section.

  6. Install the rocker arm bolts.
  7. Tighten
    Tighten the bolts to 19 N·m (14 lb ft).

  8. Install the valve rocker covers. Refer to Valve Rocker Arm Cover Replacement.
  9. Connect the negative battery cable.