87. Intake Manifold Installation - RPO 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 seal 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. Refer to Intake Manifold Installation (Upper-L65)