For 1990-2009 cars

### Removal Procedure

1. Remove the generator bracket. Refer to Generator Bracket Replacement .
2. Remove the right (rear) spark plug wires. Refer to Spark Plug Wire Replacement in Engine Controls - 3.4 L.
3. Remove the ignition coil bracket with the coils, the purge solenoid and the vacuum canister solenoid. Refer to Ignition Coil Replacement in Engine Controls - 3.4L.
4. Remove the vacuum hose from the grommet in the right (rear) valve rocker arm cover.
5. Remove the right (rear) valve rocker arm cover bolts.
6. Remove the right (rear) valve rocker arm cover.
7. Remove the right (rear) valve rocker arm cover gasket.
8. Clean the valve rocker arm cover.
9. Clean the valve rocker arm cover gasket sealing surfaces on the cylinder head (1) and the lower intake manifold.

### Installation Procedure

1. Install a new right (rear) valve rocker arm cover gasket.

Important: Apply sealant GM P/N 12345739 or the equivalent at the cylinder head to lower intake manifold joint.

2. Apply sealant at the cylinder head to lower intake manifold joint at the front of the lower intake manifold (1).

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 right (rear) valve rocker arm cover.

Hand tighten the right (rear) valve rocker arm cover bolts.

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

4. Install the vacuum hose to the grommet in the right (rear) valve rocker arm cover.
5. Install the ignition bracket with coils, the purge solenoid and the vacuum canister solenoid. Refer to Ignition Coil Replacement in Engine Controls - 3.4L.
6. Install the generator bracket and generator. Refer to Generator Bracket Replacement in Engine Electrical.
7. Install the drive belt. Refer to Drive Belt Replacement .
8. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.