For 1990-2009 cars only
- Install the upper intake manifold gaskets and manifold.
- Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the upper intake manifold bolt threads.
- Install the upper intake manifold bolts, stud, and manifold absolute pressure (MAP) sensor bracket.
- Install the foul air positive crankcase ventilation (PCV) tube.
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 upper intake manifold bolts and stud to 25 N·m (18 lb ft).
