What is most likely the cause to create a GMC code 0f P0449?

Question

Check engine light comes on and codes P0449.

Answer 1

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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