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Home >> GMC Truck >> 1999 >> C 1500 Truck 2WD V8-5.3L VIN T >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data, Normal Values and Definitions >> Scan Tool Data Definitions - Powertrain Systems >> EVAP Canister Vent Valve

EVAP Canister Vent Valve

The scan tool displays Venting or Not Venting. The EVAP Canister Vent Valve is normally open (venting). The PCM commands the EVAP Canister Vent Valve closed (not venting) during testing of the EVAP system.
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