For 1990-2009 cars only
- Install the NEW exhaust manifold gaskets.
- Install the exhaust manifold.
- Install the spark plug wire shields.
- If reusing the fasteners, apply threadlock GM P/N 12345493 (Canadian P/N 10953488) or equivalent, to the threads of the exhaust manifold bolts.
- Install the exhaust manifold bolts.
- Tighten the exhaust manifold bolts on the first pass to 15 N·m (11 lb ft).
- Tighten the exhaust manifold bolts on the final pass to 30 N·m (22 lb ft).
- Install the spark plug wires to the spark plug wire retainers.
- Install the spark plug wires onto the spark plugs.
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
