For 1990-2009 cars

## Valve Rocker Arm Cover Replacement Left

### Removal Procedure

1. Remove the left spark plug wire harness.
2. Remove the valve rocker arm cover bolts.
3. Remove the valve rocker arm cover.

### Installation Procedure

1. Install the valve rocker arm cover.
2. Apply GM P/N 12345493 threadlocker or equivalent to the bolt threads.

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.

3. Install the valve rocker arm cover bolts.

Tighten
Tighten the valve rocker arm cover bolts to 10 N·m (89 lb in).

4. Install the spark plug wire harness.

## Valve Rocker Arm Cover Replacement Right

### Removal Procedure

1. Remove the generator rear retaining brace.
2. Remove the spark plug wires.
3. Remove the valve rocker arm cover bolts.
4. Remove the valve rocker arm cover.

### Installation Procedure

1. Install the valve rocker arm cover.
2. Apply GM P/N 12345493 threadlocker or equivalent to the bolt threads.

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.

3. Install the valve rocker arm cover bolts.

Tighten
Tighten the valve rocker arm bolts to 10 N·m (89 lb in).

4. Connect the spark plug wires.
5. Install the generator rear retaining brace.