Valve Rocker Arm Cover Replacement - Right Side for GMC Truck Sierra - 4WD 2008

1. Remove the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .
2. Remove the rocker arm cover bolts.
3. Remove and discard the rocker arm cover bolt grommets, if necessary.
4. Remove the rocker arm cover.



5. Remove and discard the rocker arm cover gasket.
6. Clean and inspect the rocker arm cover, if necessary. Refer to Valve Rocker Arm Cover Cleaning and Inspection .

Important: Do not reuse the cover gasket or the valve rocker arm cover bolt grommets.

1. Install a NEW rocker arm cover gasket.
2. Install NEW rocker arm cover bolt grommets, if necessary.



3. Install the rocker arm cover.

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. Install the rocker arm cover bolts.

Tighten
Tighten the bolts to 12 N·m (106 lb in).

5. Install the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .