For Shop Owners

P0449 GMC - Evaporative Emission Vent Valve Solenoid Malfunction

Repair Importance Level: 1/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • 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
What does this mean?

Tech notes









User Submitted Video
What does this mean?

When is the code detected?

The Engine Control Module (ECM) has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0449 GMC Description

The Engine Control Module (ECM) monitors the Evaporative Emission System (EVAP) Vent Valve/Solenoid system wiring for opens or shorts. The ECM sets the OBDII code when EVAP Vent Valve/Solenoid is not to factory specifications.
OBDII Code P0449 Gmc - Evaporative Emission Vent Valve Solenoid Malfunction - k1no-portal.ru

P0449 GMC Information for specific Gmc models

Need more help?

Do you need more help with the P0449 Gmc code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code

P0449 GMC Comments

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Any information is appreciated. Thanks
Repair Importance Level: 1
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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