Cleaning Procedure
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Remove and discard the intake manifold-to-cylinder head gaskets (514).
Remove the manifold absolute pressure (MAP) sensor. Refer to Intake Manifold Removal .
- Remove the evaporative emission (EVAP) canister purge solenoid valve, EVAP tubes, and fuel rail with injectors (500). Refer to Fuel Rail and Injectors Removal .
- Remove the throttle body and gasket. Refer to Throttle Body Assembly Removal .
- Clean the intake manifold in solvent.
- Dry the intake manifold with compressed air.
WARNING:
Refer to Safety Glasses and Compressed Air Warning .