Intake Manifold Installation (Lower)
1. Install the lower intake manifold gasket.2. Install the lower intake manifold.
3. Apply GM P/N 12345382 threadlocker or equivalent on the threads.
4. Install the lower intake manifold bolts.
^ Tighten the lower intake manifold bolts in sequence to 15 Nm (11 ft. lbs.).
NOTICE: Refer to Fastener Notice in Service Precautions.
5. Install the two hidden bolts.
6. Install the EGR outlet pipe to the intake manifold.
7. Install the EGR outlet pipe bolt.
^ Tighten the EGR outlet pipe bolt to 29 Nm (21 ft. lbs.).