For 1990-2009 cars

## Valve Rocker Arm Cover Replacement Left

### Removal Procedure

1. Remove the ignition coil module. Refer to Ignition Coil and Ignition Coil Module Replacement in Engine Electrical.
2. Remove the Exhaust Gas Recirculation (EGR) valve outlet pipe bolt from the upper intake.
3. Remove the EGR valve outlet pipe nut from the EGR valve adapter.
4. Remove the EGR valve outlet pipe.
5. Disconnect the EGR valve electrical connector.
6. Remove the EGR valve adapter nuts (5).
7. Remove the EGR valve adapter bolt (4).
8. Remove the EGR valve adapter (3) from the cylinder head studs (6).
9. Remove the engine lift bracket (1) from the cylinder head studs.
10. Remove the top ignition control module bracket bolt.
11. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
12. Remove the bottom two ignition control module bracket bolts (2).
13. Lower the vehicle.
14. Remove the ignition control module bracket (1).
15. Loosen the valve rocker arm cover bolts.
16. Remove the valve rocker arm cover (1) and gasket.
17. Remove the valve rocker arm cover gasket from the cover.
18. Clean the following items:

• | The valve rocker arm cover

• | The cylinder head gasket surface

• | The valve rocker arm cover bolts

### Installation Procedure

1. Apply GM P/N 12345493 thread lock adhesive or equivalent to the valve rocker cover bolt threads.
2. Install the valve rocker arm cover (1) and gasket.

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. Tighten the valve rocker arm cover bolts.

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

4. Install the ignition control module bracket (1).
5. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
6. Install the bottom two ignition control module bracket bolts (2).

Tighten
Tighten the bottom two ignition control module bracket bolts to 50 N·m (37 lb ft).

7. Lower the vehicle.
8. Install the top ignition control module bracket bolt.

Tighten
Tighten the top ignition control module bracket bolt to 50 N·m (37 lb ft).

9. Install the engine lift bracket (1) to the cylinder head studs.
10. Install the EGR valve adapter (3) to the cylinder head studs (6).
11. Install the EGR valve adapter nuts (5).

Tighten
Tighten the EGR valve adapter nuts (5) to 50 N·m (37 lb ft).

12. Install the EGR valve adapter bolt (4).

Tighten
Tighten the EGR valve adapter bolt (4) to 25 N·m (18 lb ft).

13. Connect the EGR valve electrical connector.
14. Install the EGR valve outlet pipe.
15. Install the EGR valve outlet pipe nut to the EGR valve adapter.
16. Install the EGR valve outlet pipe bolt to the upper intake.

Tighten

• | Tighten the EGR valve outlet pipe nut to 29 N·m (21 lb ft).

• | Tighten the EGR valve outlet pipe bolt to 29 N·m (21 lb ft).

17. Install the ignition coil module. Refer to Ignition Coil and Ignition Coil Module Replacement in Engine Electrical.

## Valve Rocker Arm Cover Replacement Right

### Removal Procedure

1. Remove the drive belt. Refer to Drive Belt Replacement .
2. Remove the generator. Refer to Generator Replacement .
3. Disconnect the canister purge solenoid tubes (2, 5) from the solenoid (1).
4. Remove the canister purge solenoid (1) from the mounting bracket.
5. Remove the spark plug wiring harness from the clip and reposition the harness.
6. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
7. Remove the right rear engine lift bracket stud (2) and bolt (1).
8. Lower the vehicle.
9. Loosen the valve rocker arm cover bolts.
10. Remove the valve rocker arm cover and gasket.
11. Remove the valve rocker arm cover gasket from the cover.
12. Remove the oil fill cap. Remove the oil fill tube, if necessary.
13. Clean the following items:

• | The valve rocker arm cover

• | The cylinder head gasket surface

• | The valve rocker arm cover bolts

### Installation Procedure

1. Install the oil fill tube. Install the oil fill cap, if necessary.
2. Apply GM P/N 12345493 thread lock adhesive or equivalent to the valve rocker cover bolt threads.
3. Install the valve rocker arm cover and gasket.

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.

4. Tighten the valve rocker arm cover bolts.

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

5. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
6. Install the right rear engine lift bracket (3), stud (2) and bolt (1).

Tighten
Tighten the right rear engine lift bracket stud (2) and bolt (1) to 50 N·m (37 lb ft).

7. Lower the vehicle.
8. Remove the spark plug wiring harness from the clip and reposition the harness.
9. Install the canister purge solenoid (1) to the mounting bracket.
10. Connect the canister purge solenoid tubes (2, 5) to the solenoid (1).
11. Install the generator. Refer to Generator Replacement .
12. Install the drive belt. Refer to Drive Belt Replacement .