Intake Manifold Installation (L57, L65)

1. Install the intake manifold and gaskets.

NOTICE: Refer to Fastener Notice in Service Precautions.





2. Install the intake manifold bolts/studs and fuel line clips.
- Use Teflon sealer to sea[ the four bolts, numbers 9, 11, 13, and 15 that are exposed to the crankcase.
- Apply threadlocker GM P/N 12345493 to the threads of the bolts and the studs that are not numbered 9, 11, 13, or 15.
Tighten the intake manifold bolts/studs, in sequence, to 42 Nm (31 ft. lbs.).





3. Install the hoses and the clamps to the fuel filter assembly.





4. Install the fuel filter assembly and the engine wiring harness bracket.
Tighten the fuel filter mount bolts to 42 Nm (31 ft. lbs.).

5. If equipped, install the upper intake manifold.