P0449 GMC Code - Evaporative Emission Vent Solenoid Valve Control Circuit
Quick Answer
The Evaporative Emission (EVAP) Vent Solenoid Valve is located on the EVAP canister and is used to seal the canister vent. Common causes include Faulty Evaporative Emission Vent Solenoid Valve, Evaporative Emission Vent Solenoid Valve harness is open or shorted, Evaporative Emission Vent Solenoid Valve electrical circuit poor connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- P0449 GMC indicates Evaporative Emission Vent Solenoid Valve Control Circuit.
- Common causes
- Common causes include Faulty Evaporative Emission Vent Solenoid Valve, Evaporative Emission Vent Solenoid Valve harness is open or shorted, Evaporative Emission Vent Solenoid Valve electrical circuit poor connection.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code P0449 GMC Description
What are the Possible Causes of the DTC P0449 GMC?
- Faulty Evaporative Emission Vent Solenoid Valve
- Evaporative Emission Vent Solenoid Valve harness is open or shorted
- Evaporative Emission Vent Solenoid Valve electrical circuit poor connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0449 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0449 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0449 GMC code?
Need more information on how to fix the P0449 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0449 GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- P0449 2006 GMC Sierra — Evaporative Emission Vent Valve Solenoid Malfunction
- P0449 2014 GMC Sierra — Evaporative Emission Vent Solenoid Valve Control Circuit
- P0449 2015 GMC Sierra — Evaporative Emission Vent Solenoid Valve Control Circuit
- P0449 2016 GMC Sierra — Evaporative Emission Vent Solenoid Valve Control Circuit
- P0449 2017 GMC Sierra — Evaporative Emission Vent Solenoid Valve Control Circuit
- P0449 2018 GMC Sierra — Evaporative Emission Vent Solenoid Valve Control Circuit
- P0449 2007 GMC Yukon — Evaporative Emission Vent Valve Solenoid Malfunction
Frequently Asked Questions about P0449 GMC Code
1. What are the common symptoms of OBDII code P0449 GMC?
The common symptoms of code P0449 GMC include the check engine light illuminating on the dashboard, potential fuel odor near the vehicle, and issues with passing an emissions test.
2. What does the OBDII code P0449 GMC indicate?
OBDII code P0449 GMC indicates a problem with the evaporative emission vent solenoid valve control circuit, which is part of the vehicle's emissions control system.
3. What are the possible causes of OBDII code P0449 GMC?
The possible causes of code P0449 GMC include a faulty vent solenoid valve, damaged wiring or connectors in the control circuit, a malfunctioning PCM, or a vacuum leak in the evaporative emissions system.
4. How can I diagnose the cause of OBDII code P0449 GMC?
To diagnose the cause of code P0449 GMC, you can perform a visual inspection of the vent solenoid valve and its wiring, use a multimeter to test for continuity and voltage in the circuit, and conduct a smoke test to check for leaks in the evaporative emissions system.
5. How can I repair OBDII code P0449 GMC?
Repairing code P0449 GMC typically involves replacing the faulty evaporative emission vent solenoid valve, repairing any damaged wiring or connectors, and clearing the code with an OBDII scanner.
6. Can I drive my vehicle with OBDII code P0449 GMC?
It is generally safe to drive your vehicle with code P0449 GMC, but it is important to address the issue promptly to prevent potential damage to the emissions control system and ensure compliance with emissions regulations.
7. How much does it cost to repair OBDII code P0449 GMC?
The cost to repair code P0449 GMC can vary depending on the specific cause of the issue, the labor rates in your area, and whether you choose to repair the vehicle yourself or take it to a professional mechanic.
8. Are there any preventive maintenance tips to avoid OBDII code P0449 GMC?
To prevent code P0449 GMC, it is recommended to regularly inspect the evaporative emissions system components, such as the vent solenoid valve, for signs of wear or damage, and address any issues promptly.
9. Can a DIY enthusiast repair OBDII code P0449 GMC?
Yes, a DIY enthusiast with the necessary tools and knowledge can repair code P0449 GMC by following the repair procedures outlined in the vehicle's service manual or seeking guidance from online resources and forums.
10. How long does it take to repair OBDII code P0449 GMC?
The time it takes to repair code P0449 GMC can vary depending on the extent of the issue, the availability of replacement parts, and your level of experience with automotive repairs. In general, the repair can be completed within a few hours to a day.
Discuss the causes and fixes for P0449 GMC OBDII Code
-
got p0449 error code.. with so many different part numbers i am not sure which is the cross reference part number for my GMC sierra sl. 5.3 gas engine. my part looks similar to the delco 214 2149 however when i key that part in at auto parts stores...it's not the right part??? I called the dealer and he gave me a part number of 1927763 cant' find it anywhere for cross reference. any ideas. can I still use the cross referenced 2149 part?
-
I have replaced the vent valve with the recommended up grades 3 times and now it is acting up again P0449 what's up (2005 GMC Serria 1500 4.3 engine)
-
I have a P0449 code on a GMC Acadia and I heard the problem is usually the harness that is plugged in under the driver side. The wires being broken in the harness is pretty common. A lot of times people run out and buy a new vent solenoid which isn't really the problem.
-
I have a 2007 gmc acadia and code P0449 has popped up on reader. It is hard to start aftering pumping any amount of gas. Now it is hesitating to go from 25 to 30 mph is that related to that code?
-
It's possible but not very likely. Only if the cause of the code is a very large vacuum leak.
Any other codes? -
I my gmc yukon code PO0449 i change bout everything engine light still on. Saying same thing truk doing lil shaking
-
Let me check if I can find more specific information about your vehicle. What year and engine size is your Yukon? Any other symptoms?
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
