Intake Manifold Replacement - Left Side LLY, LBZ

1. Remove the center intake manifold. Refer to Center Intake Manifold Replacement .
2. Remove the auxiliary generator, if equipped. Refer to Auxiliary Generator Replacement .
3. Remove the left fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement - Bank 2 .
4. Remove the injection pump. Refer to Fuel Injection Pump Replacement .



5. Remove the intake manifold bolts/nuts.

Important: The intake manifold uses sealer. Pry at the area by the fuel rail bolt holes in order to avoid damage to the sealing surface.

6. Remove the intake manifold.
7. To prevent entry of debris into the cylinder head, tape the openings.
8. Clean the gasket surfaces.

1. Apply a 2-3 mm (1/8 in) wide, by 0.5-1.5 mm (1/16 in) high bead of sealant to the intake manifold. Refer to Adhesives, Fluids, Lubricants, and Sealers .



2. Install the intake manifold.
3. Install the intake manifold bolts/nuts.

Notice: Refer to Fastener Notice in the Preface section.




4. Tighten the intake manifold bolts/nuts.

Tighten
Tighten the bolts/nuts in the sequence shown to 25 N·m (18 lb ft).




5. Install the fuel injector pump. Refer to Fuel Injection Pump Replacement .
6. Install the left fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement - Bank 2 .
7. Install the auxiliary generator, if equipped. Refer to Auxiliary Generator Replacement .
8. Install the center intake manifold. Refer to Center Intake Manifold Replacement .