Inspection Procedure

WARNING: This page is about a different car, the 2003 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: DO NOT perform this procedure unless instructed by an Evaporative Emission (EVAP) diagnostic.

NOTE: Use Evaporative Emission System Tester (J-41413-200) in order to provide a clean, dry, low pressure gas source. Do not substitute any other pressurized gas source. Damage may result to the EVAP system.

Turn ignition off. Remove EVAP canister purge solenoid. See EVAP CANISTER PURGE SOLENOID under SOLENOIDS. Lightly tap the EVAP canister purge solenoid on a clean, hard surface. Inspect for carbon particles exiting either of the vacuum ports. If no carbon particles are found, reinstall EVAP canister purge solenoid and perform CLEANING PROCEDURE .
If carbon particles are found during the inspection procedure, replace EVAP canister purge solenoid and perform CLEANING PROCEDURE . If you were instructed to replace the EVAP canister purge solenoid, and no carbon particles are found, return to the EVAP diagnostic procedure. DO NOT perform the CLEANING PROCEDURE .