86. Intake Manifold Installation - Lower

Intake Manifold Installation (Lower)






1. Clean the lower intake manifold sealing surface using GM P/N 12346139 (Canadian P/N 10953463) or equivalent prior to installing any seals or gaskets.
2. Install the lower intake manifold gasket.
3. Install the lower intake manifold.
4. Apply GM P/N 12345382 thread locker or equivalent on the threads.

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.

5. Install the lower intake manifold bolts.

Tighten
Tighten the lower intake manifold bolts in sequence to 15 Nm (11 lb ft).






6. Install the EGR outlet pipe to the intake manifold.
7. Install the EGR outlet pipe bolt.

Tighten
Tighten the EGR outlet pipe bolt to 29 Nm (21 lb ft).