2018 Chevrolet Traverse fuel, hybrid & EV propulsion problems

Related recalls

No recalls on file.

What owners say

1. Filed Oct 1, 2026MDElectrical SystemEngineFuel, Hybrid & EV Propulsion

   First issue-cracked catalytic converter caused leaking carbon monoxide inside vehicle. When I was driving I could smell strong, nauseating fuel smell and would have to drive with windows open to try and get fresh air. Took it to local shop for repair which cost $2700. After repair did some research and found special coverage warranty for 2018 Traverse for this same issue, however chevy told me because I took it to a third party they would not reimburse. Second issue-when car…

   NHTSA complaint #11768232 · source
2. Filed May 11, 2026ILElectrical SystemEngineFuel, Hybrid & EV Propulsion

   Special coverage programs for the 2018 Chevy Traverse front exhaust pipe mounting bracket failure. GM has focused on coverage specifically on 2019-2021 models, but 2018 models are affected as well. I'm being forced to pay for a new exhaust when 2018 models should have been included for the Specific special coverage (e.g., N212356540, N222385510) exists for 2019–2021 vehicles, offering repairs (sometimes for 15 years or 150,000 miles) when the front mounting bracket breaks.

   NHTSA complaint #11737069 · source
3. Filed Apr 27, 2026CAFuel, Hybrid & EV Propulsion

   My engine light came on, so I took it the mechanic. According to the reading it says it was my purge valve, they replaced. After driving 30 miles it came back on. I took it back and they thought it was a defected part so they replaced it again. After 30 miles, it came back on. The mechanic searched online and showed me this issue was for 2019 for a recall. I contacted GM to see if there is a recall for 2018. They said no. At this time the engine lights stays on, but it gives…

   NHTSA complaint #11734037 · source
4. Filed Apr 8, 2026TXFuel, Hybrid & EV Propulsion

   Valor Canister Purge solenoid is faulty. After filling it up with gas and start driving the vehicle begins to stutter. After a stop at an intersection the vehicle begins to stutter and shuts off.

   NHTSA complaint #11730052 · source
5. Filed Mar 17, 2026KYFuel, Hybrid & EV Propulsion

   The exhaust system on my 2018 Chevrolet Traverse has failed due to cracking in the exhaust pipe and/or muffler assembly. This appears to be consistent with known issues in similar model years where exhaust pipe brackets separate and cause cracks or holes in the exhaust system. The failure has resulted in excessive exhaust noise and potential exhaust leakage. The dealership has confirmed the issue and recommended repairs costing several thousand dollars but stated my VIN is…

   NHTSA complaint #11724867 · source
6. Filed Nov 15, 2025TXEngineFuel, Hybrid & EV Propulsion

   ome customers may complain of a rattle or exhaust noise, a CEL/MIL on, or repeat concerns of lean codes or converter failures. The cause for these concerns could be a broken or poor weld with lack of penetration on the Bank 2 exhaust. Issue is exact same as listed in Bulletin PIP5681A

   NHTSA complaint #11699609 · source
7. Filed Oct 21, 202555,000 miTXEngineFuel, Hybrid & EV Propulsion

   The contact owns a 2018 Chevrolet Traverse. The contact stated that while operating the vehicle, the check engine warning light remained illuminated, and the vehicle hesitated while accelerating. Additionally, the vehicle failed to immediately restart after refueling. The vehicle was taken to the local dealer, who diagnosed and determined that the purge valve was faulty and needed to be replaced. The vehicle was not yet repaired. The contact stated that the purge valve was…

   NHTSA complaint #11694738 · source
8. Filed Aug 13, 2025MIEngineFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   The vehicle has a design flaw which causes a bracket which connects the 2 pipes which connect to the catalytic converter to fail. Once the bracket has failed, the rear catalytic converter is allowed to vibrate more than designed, adding extra stress to the catalytic converter. Over time, this additional stress causes the catalytic converter to fail, releasing harmful gases directly from the engine exhaust manifold with carbon monoxide and other harmful gases into the air and…

   NHTSA complaint #11680527 · source
9. Filed Jul 21, 2025CAFuel, Hybrid & EV PropulsionOther / Unknown

   I have had to repair the muffler and now the catalytic converter. There was a fissure on the muffler and now there’s a fissure on the catalytic converter.

   NHTSA complaint #11675100 · source
10. Filed May 1, 2025AZFuel, Hybrid & EV Propulsion

    This vehicle's canister purge valve solenoid has failed multiple times since we purchased it used in 2021. We've taken it to multiple Chevrolet dealerships for repair and the issue has not been fixed. The issue is once the part fails, the vehicle is unable to be filled with fuel completely or it sputters when trying to start and the engine turns off or it stalls right after placing into drive. This causes a safety concern. There are multiple articles all over the internet…

    NHTSA complaint #11658062 · source
11. Filed Apr 14, 202584,000 miTXFuel, Hybrid & EV Propulsion

    The contact owns a 2018 Chevrolet Traverse. The contact stated while driving 10 MPH, while depressing the accelerator pedal, the vehicle failed to respond as needed. A dealer was contacted. The vehicle was taken to the dealer to be diagnosed, and it was determined that the purge valve needed to be replaced. The contact stated that the failure had occurred on several occasions. The purge valve was replaced, and the vehicle was repaired. The vehicle was towed back to the place…

    NHTSA complaint #11654610 · source
12. Filed Dec 16, 202465,000 miTXEngineFuel, Hybrid & EV Propulsion

    The contact owns a 2018 Chevrolet Traverse. The contact stated that the vehicle was emitting a vibrating and rattling noise while driving. The contact stated while driving at an undisclosed speed and attempting to accelerate, the vehicle lost motive power. The contact stated while driving uphill and accelerating, the engine backfired. The check engine warning light was illuminated. The vehicle was taken to the dealer who diagnosed that there was an EVAP leak. The vehicle…

    NHTSA complaint #11630946 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology