P0496 – GMC

Code : P0496
Make : GMC
Description : P0496 GMC Evaporative Emission System Flow During Non-Purge
Possible causes :
– Faulty EVAP Canister Vent Valve
– Faulty EVAP Canister Purge valve
– Plugged EVAP canister condition
– Faulty EVAP Pressure Sensor
– EVAP Canister Vent Valve harness is open or shorted
– EVAP Canister Vent Valve circuit poor electrical connection
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.

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