1. Disconnect the negative battery cable. Refer to

   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.

   in General Information.
2. Remove the valve rocker covers. Refer to Valve Rocker Arm Cover Replacement .

Important: Keep the components separated so they may be installed in the same location.




3. Remove the rocker arm bolts.
4. Remove the rocker arm pivot balls.
5. Remove the rocker arms.

Important: Keep the pushrods in order so that they can be installed in the original position.

6. Remove the pushrods.

Tools Required

J 36660-A Torque Angle Meter

1. Install the pushrods in thier original location.

•	Coat the ends of the pushrods with prelube. Use GM P/N 1052356 or its equivalent.

•	The intake pushrods are marked with yellow stripes and are 5 3/4 inches long.

•	Exhaust pushrods are marked with green stripes and are 6 inches long.

•	Ensure that the pushrods seat in the lifter.

2. Install the rocker arms.
3. Install the rocker arm pivot balls.

Coat the bearing surfaces of the rocker arms and the pivot balls with prelube. Use GM P/N 1052356 or its equivalent.

4. Install the rocker arm bolts.

Tighten
Tighten the bolts to 10 N·m (89 lb in). Use the J 36660-A in order to tighten the bolts an additional 30 degrees.

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 covers. Refer to Valve Rocker Arm Cover Replacement .
6. Connect the negative battery cable.