There are 11 owner-reported engine complaints for the 2021 Chevrolet Traversein NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Both exhaust pipes before the catalytic converter are cracked and leaking at the same welded mounting bracket. One of them GM is coving under the extended warranty but the other one also needs replaced the turn off the engine warning light. It is allowing exhaust gas to leak under the car and is preventing the emissions from operating properly.
The contact owns a 2021 Chevrolet Traverse. The contact stated that while starting the vehicle, the front exhaust pipe made an abnormally loud sound, and there was an odor inside the vehicle. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure but informed the contact that there was no recall associated with the VIN. The failure mileage was approximately 74,000.
I was driving to work and my car made a loud noise. I was able to drive back home. I took my car to the Chevrolet repair shop. They said my front exhaust and catalytic converter are broken. They replaced my exhaust pipe and not the converter.
the dealership car because the engine lingt Come the fun out the Cadillac converter have to be replaced. Is a 2021 traverse. Come to find out I'm not the only person that has the same problem I need to check the Cadillac converters on these Traverse
The contact owns a 2021 Chevrolet Traverse. The contact stated that while driving at an undisclosed speed, the check engine and oil warning lights illuminated. After a visual inspection of the engine compartment, the contact observed that the engine oil was abnormally low and required 2-quarts of oil to top off the oil level even though the vehicle had recently been serviced. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 41,000.
The contact owns a 2021 Chevrolet Traverse. The contact stated that while driving at an undisclosed speed, she heard an abnormal rattling sound emanating from underneath the vehicle. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the catalytic converter. Additionally, the contact was informed that the exhaust system needed to be replaced. The contact stated that the exhaust had previously failed and was replaced. The vehicle was not repaired. After investigating the failure, the contact related the failure to Special Coverage: N222385510. The manufacturer was not notified of the failure. The failure mileage was 61,000.
The contact owns a 2021 Chevrolet Traverse. The contact stated while driving at an undisclosed speed, there was an abnormal rattling sound coming from the exhaust pipe. There were no warning lights illuminated. The vehicle was taken to a local dealer; however, the vehicle was not yet diagnosed. The contact related the failure to Technical Service Bulletin: PIP5681C (Exhaust leak, Lean Codes, Rattle Noise, or Catalytic Converter Failure Codes); however, the vehicle was not included. The manufacturer was made aware of the failure and referred contact to the NHTSA Hotline for assistance. The failure mileage was approximately 33,000. The VIN was not available.
I was driving on I-20 with cruise control on @ 71 mph (night time) @ 7 min into using cruise control, the suv acted like it stopped for a quick second (scaring me) I remember rubbing my neck afterwards, thinking it was almost like whiplash. I pulled off the road into parking lot. I thought maybe I had a flat or tire issue, no tire issues. I then stopped @ a store, when getting back into the suv, I could smell something awful. Like something had burnt. Still don’t know. I have not used the cruise control since this incident. It was Xmas weekend, so I have to wait till dealer opens back up to have it checked out.
KNOWN ISSUE: Chevy Traverse owners may experience a condition wherein the front exhaust pipe on their crossover separates from the mounting bracket, resulting in damage to the pipe. Now, General Motors has issued new Special Coverage that addresses this issue. NEW ISSUE: Rear exhaust pipe is also affected. When separated/cracked this was leaking carbon monoxide fumes into the inside of the vehicle when driven. Our family's safety was put at risk breathing these fumes. The Chevrolet dealership says that only the front exhaust issue is being recalled/covered but rear is not even when it is attached to same mounting bracket with known issue. Appeared/noticed as loud muffler sound and strong smells of fumes.
******* DELETE VOQ ******* THIS COMPLAINT IS BEING MARKED FOR DELETION BECAUSE IT IS AN INADVERTENT DUPLICATE OF ODI# 11495132*DJR ******* DELETE VOQ *******
The contact owns a 2021 Chevrolet Traverse. The contact stated that upon depression of the accelerator pedal, there was an abnormal, clicking sound and a fuel exhaust odor coming from the vehicle. There was no warning light illuminated. The contact had taken the vehicle to the dealer on several occasions to have the exhaust pipe under the hood replaced; however, the failure recurred. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was 36,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026