Intake Manifold Replacement - Left
Intake Manifold Replacement - LeftRemoval Procedure
1. Remove the turbocharger assembly.
2. Remove the fuel junction block.
3. Remove the left fuel rail assembly.
4. Remove the intake manifold tube.
5. Remove the 9 bolts and the 2 nuts from the intake manifold. A bolt is located in the intake manifold opening.
Important: The intake manifold uses sealer. Pry at the area by the common rail bolt holes. Avoid damage to the sealing surfaces.
6. Remove the intake manifold from the cylinder head.
7. To prevent entry of debris in the cylinder head, tape the openings.
Inspection and Repair
1. Clean the sealant from the intake manifold and the cylinder head sealing surface.
2. Clean the intake manifold in cleaning solvent and air dry.
3. Inspect the intake manifold for cracking, distortion, and any damage.
4. Replace the intake manifold if any of the above conditions exist.
Installation Procedure
1. Apply a 2 - 3 mm (1/8 inch) wide to 0.5 - 1.5 mm (1 /16 inch) high bead of sealer GM P/N 12378521 or equivalent to the sealing surface of the intake manifold.
Important: The left side and the right side intake manifolds are not interchangeable.
2. Install the intake manifold to the cylinder head.
Notice: Refer to Fastener Notice in Service Precautions.
3. Install the intake manifold 9 bolts and 2 nuts.
^ Tighten the intake manifold bolts and nuts to 21 Nm (15 ft. lbs.) in the sequence shown.
4. Install the intake manifold tube.
5. Install the left fuel rail assembly.
6. Install the fuel junction block.
7. Install the turbocharger assembly.