61. Intake Manifold Cleaning and Inspection - Lower

Intake Manifold Cleaning and Inspection - Lower

^ Tools Required
- J 21882 Oil Suction Pipe Installer





1. Remove the intake manifold coolant pipe bolt, if required.
2. Remove the intake manifold coolant pipe, if required.





3. Clean the intake manifold gasket mating surfaces using GM P/N 12346139 (Canadian P/N 10953463) or equivalent.
4. Clean the fuel injector bores.
5. Inspect the intake manifold for damage.
6. Repair or replace the intake manifold as necessary.





7. Apply sealant GM P/N 12345493 (Canadian P/N 10953488) or equivalent to the end of the intake manifold coolant pipe, if required.
8. Install the intake manifold coolant pipe using J 21882.

9. Notice: Refer to Fastener Notice in Service Precautions.

Install the intake manifold coolant pipe bolt.
^ Tighten the intake manifold coolant pipe bolt to 10 Nm (89 inch lbs.).