Lower Intake Manifold Cleaning and Inspection
WARNING: This page is about a different variant/trim than selected.
- Clean the intake manifold gasket mating surfaces (3) using GM P/N 12346139 (Canadian P/N 10953463) or equivalent.
- Clean the fuel injector bores (1).
- Inspect the lower intake manifold locating pins (2) for damage. Replace as necessary.
- Inspect the intake manifold for damage.
- Repair or replace the intake manifold as necessary.
IMPORTANT:
If replacing the lower intake manifold, make sure to transfer or replace the locating pins as necessary.