For 1990-2009 cars only
- Apply a 2-3 mm wide by 0.5-1.5 mm high bead of Gm P/N 12378521 (Canadian P/N 88901148) sealant on the intake manifold mating surface.
- Install the intake manifold.
- Install the intake manifold bolts and nuts.
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 intake manifold bolts and nuts to 25 N·m (18 lb ft).
