2018 Chevrolet Traverse

The contact owns a 2018 Chevrolet Traverse. The contact stated that upon the start of the vehicle, an abnormal rattling sound was coming from the vehicle without warning. The contact stated that once the engine had warmed up, the rattling sound turned into a chugging sound. The vehicle was taken to an independent mechanic where it was discovered that the bracket used to hold the exhaust pipes together had rubbed against one of the pipes and formed a hole. The mechanic then explained that if not repaired, the catalytic converter would become damaged. The dealer was notified of the failure and an appointment was made to have a diagnostic test performed. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was 117,600.

I currently own a 2018 Chevrolet Traverse with 63k miles the had a cracked catalytic converter. The catalytic converter was replaced but the dealer also charged me for a flex pipe replacement which they said was broken too. This is a known issue as per GM's own bulletin #PIP5681, yet they refused to cover the repair in it's entirety. GM is entirely covering this issue in 2018-2021 chevy traverse vehicles, but they are refusing to cover the costs of the flex pipe replacement for approximately $600.

The exhaust system mount bracket broken allowing exhaust system movement resulting in a cracked catalytic converter . The mount bracket broke due to a poor weld from the part supplier. The repair cost $2404.74 on 6/5/2023 at 33.953 miles . Recently I researched this issue and found GM policy # N212356540 on 2019 Chevrolet Traverse and Buick Enclave with exact same issue with coverage to 150,000 miles. My research also found that many other owners of 2018 Traverse complaining about the exact same issue with very similar costs. This obvious emission item should have been covered. l

My vehicle was getting a check engine code #P0420, took to my GM dealer for service on [XXX]. RK Chevrolet in Virginia Beach, VA. Was told the error was caused by the mounting bracket on the front exhaust pipe had separated from the pipe, resulting in a hole in the pipe. They replaced the front exhaust pipe (85542639) and 2 pipe gaskets (84135650) as well as the muffler section of the exhaust. GM has issued a special coverage [XXX] on the 2021 Traverse for these exact part numbers, and are replacing at no cost. But if the same part numbers are failing on the 2018 (and probably 2019 and 2020) shouldn't they be covering all models with these parts. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The rear catalytic converter has a crack in it which causes exhaust fumes to blow right into the cab of the vehicle. I have called and reported. I asked if there was a recall, chevy said theres no recalls. I stated how bad the fumes are and that when quoted, it is over 2000.00 to repair. I have looked into this and it seems to be a common issue with the Traverse. Muffler shops and regular mechanics refuse to touch this issue and state it has to be taken to a dealership for replacement and repairs. I currently cannot transport my children in the vehicle. I drive 10 miles to work and have a headache all day due to the fumes i injest in the drive to work. By the time i get to work i am very light headed and dizzy. This is a serious issue that needs to be addressed and taken seriously before any fatalities due to the lack of concern or care from Chevrolet.

The contact owns a 2018 Chevrolet Traverse. The contact stated that while driving at an undisclosed speed, the exhaust system failed. The contact stated that the exhaust system was extremely loud. The vehicle was taken to an independent mechanic where it was diagnosed with a failed exhaust system and the exhaust system needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 30,000.