For 1990-2009 cars

### Removal Procedure

Caution: Refer to Battery Disconnect Caution in the Preface section.

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

Important: Keep the components separated in order to install the components 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 in order to install the pushrods in the original position.

6. Remove the pushrods.

### Installation Procedure

0

1. Install the pushrods in the original location.

• | Coat the bearing surfaces of the rocker arms and the pivot balls with GM P/N 12345501 or GM P/N 88862586 (Canadian P/N 992704 or Canadian P/N 88862586) or the equivalent.

• | 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.

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

Notice: Refer to Fastener Notice in the Preface section.

4. Install the rocker arm bolts.

Tighten
Tighten the bolts to 19 N·m (14 lb ft).

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