For 1990-2009 cars

#### Tools Required

J 36660-A Torque Angle Meter

### Removal Procedure

1. Remove the rocker arm covers. Refer to Valve Rocker Arm Cover Replacement .
2. Remove the valve rocker arm bolts.

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.

3. Remove the valve rocker arms.
4. Remove the retainer.
5. Remove the pushrods.

### Installation Procedure

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. Ensure that the pushrods seat in the lifter sockets.
2. Install the retainer.
3. Install the valve rocker arms.
4. Apply thread lock compound or equivalent to the bolt threads before installing.

Notice: When using the valve spring compressor, be careful not to scratch or gouge the valve stem.

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.

5. Install the valve rocker arm bolts.

Tighten
Tighten the valve rocker arm bolts to 15 N·m (11 lb ft). Use the J 8062 in order to rotate the bolts an additional 90 degrees.

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