Intake Manifold Replacement (Lower)

Lower Intake Removal









Remove or Disconnect
1. Distributor wiring and distributor.
^ Mark the relationship of the distributor housing and rotor for proper reassembly.
2. Upper radiator hose at thermostat housing.
3. Heater hose at lower intake manifold.
4. Fuel Supply and return line at rear of lower intake manifold.
5. Pencil brace ( air conditioning compressor bracket to lower intake manifold).
6. Wire harnesses, including;
^ Fuel injector.
^ Exhaust gas recirculation (EGR) valve.
^ Engine coolant temperature sensor.
7. Lower intake manifold bolts.
8. Lower intake manifold.


Lower Intake Installation









Install or Connect


1. Gaskets to the cylinder head with the port blocking plates facing the rear of the engine and "this side up" stamping facing up.
2. RTV to the front and rear sealing surfaces on the block. Apply a 5 mm (3/16 in.) bead of RTV (GM PIN 1052386 or equivalent) to the front and rear of the block. Extend the bead 13 mm (1/2-In.) up each cylinder head to seal and retain the gaskets.
3. Lower Intake manifold to engine.
^ Apply sealer, GM P/N 1052080 or equivalent, to the lower intake. manifold bolts.
4. Lower intake manifold bolts.
^ Tighten Bolts to 46 N.m (35 lbs. ft.)
5. Wire harnesses, Including,
^ Fuel Injector.
^ Exhaust gas recirculation (EGR) valve.
^Engine coolant temperature sensor.
6. Pencil brace ( air conditioning compressor bracket to lower Intake manifold).
7. Fuel supply and return lines to rear of lower Intake manifold
8. Heater hose to lower Intake manifold.
9. Upper radiator hose to thermostat housing.
10. Distributor wiring and distributor.