For 1990-2009 cars only
- Install the valve rocker arm cover gasket into the valve rocker arm cover.
- Apply sealer GM P/N 12345739 or the equivalent to the notches where the cylinder head and intake manifold meet.
- Install the valve rocker arm cover.
- Install the valve rocker arm cover bolts.
- Install the vacuum lines from the upper intake manifold.
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.
Tighten
Tighten the valve rocker arm cover bolts to 10 N·m (89 lb in).
