Check engine light comes on and codes P0449.
P0449 GMC - Evaporative Emission Vent Valve Solenoid Malfunction
Possible cause:
- Vacuum leaks, damaged hoses or improper routing - EVAP system - Check fuel cap, canister, valves or components - Faulty purge or vent solenoids - Check connector and wiring - Fuel saturated vapor canister - Failed EVAP vent solenoid
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