Evaporative Emissions System - General Motors - Evaporative Control System: Maintenance: Notes

Check all fuel and vapor lines and hose for proper connections and correct routing as well as condition. Remove canister and check for cracks or damage. Replace damaged or deteriorated parts as necessary. Replace filter in bottom of canister every 30, 000 miles or 24 months (whichever occurs first).

NOTE: Canister filter should be changed more frequently if vehicle is operated in extremely dusty conditions.