I was told that my muffler needed to be replaced and not covered under warranty this vehicle is not even 3 years old yet and I need a new muffler my car sounds LOUD and the check engine light is now on.

- Streator, IL, USA

The exhaust pipe and muffler developed a hole in both exhaust components at less than 32k miles. This is a known design issue for the model as a previous model year had a special coverage adjustment on 03/2022 [XXX]. It is apparent this is a design flaw that wasn't fixed for the 2020 model year. GM has only offered 50% of repair costs. I am requesting the NHTSA to open review of exhaust failure for the 2020 model year of Chevrolet Traverse, GMC Acadia, and Cadillac XT6 that are equipped with the 3.6 liter V6 engine. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Dripping Springs, TX, USA

Months ago I was driving, my 2020 traverse I hit the brakes and I heard a weird grinding noise & my car started wobbling, I figured I needed my brakes pads changed, I took it to Waldorf Chevy they looked at the brakes and told me everything was good I didn-??t need pads and everything was ok, they said sometimes the pads get dust on them causing them to squeak, and wobble, i had the front pads replace at a local shop they also looked at the back brakes and said the back pads were good, sometime later I was heading to work I stopped at a gas station and the car wouldn-??t start. On the Chevy app it said my antilock brake system and stability control needs serviced which was weird it gave no warning I had it diagnosed the mechanic said the engine seized I towed it to another shop they said the same thing I towed it to Chevy they insisted it was the battery I told them it was the engine, they later said the engine seized but not before charging me $500 for a diagnostic, $371 battery plate. I got oil changes regularly and often did preventive maintenance.

- Accokeek, MD, USA

The contact owns a 2020 Chevrolet Traverse. The contact stated while driving 35 MPH, the vehicle stalled. The contact stated that the service engine warning light was illuminated. The contact took the vehicle to the local dealer however, the mechanic was unable to duplicate the failure. The vehicle was not repaired. The contact had experienced the failure several times. The manufacturer had not been informed of the failure. The failure mileage was unknown.

- Yakima, WA, USA

I was operating my vehicle at 70 MPH on the freeway, when I took my foot off the accelerater pedal to exit I could feel a pop under my feet and the engine started to make a lot more noise. I lost engine power and had to coast/idle to the nearest gas station. I went under the car and discovered a hole in my exhaust where there used to be a bracket to mount the exhaust pipes to yhe undercarriage. I went on a chevy Traverse Forum to discover this is a common problem. I believe it is unsafe to operate the vehicle with an exhaust leak that also creates loss of engine power and eventually leads to engine damage.

- Hahira, GA, USA

P0420 warning light came on car exhaust has whole in

- Riverview , FL, USA

Muffler pipes are rubbing on the metal that was used to hold the muffler pipes from dragging. There is nothing to stop this from happening. If it-??s Rubbing holes in the muffler then it-??s allowing the fumes into the ozone layer and also wasting gas and messing the engine up m, causing the engine to read wrong. This is not Normal wear and tear this is a manufactured default that should not be my responsibility bc it wasn-??t secured correctly.

- Greenville, SC, USA

We brought our Traverse into the dealership for a check engine light. The resulting inspection revealed as follows. The bracket welded from the f-pipe to the muffler at bank 2 was found to be cracked by the DeMontrond Chevrolet Dealership in Texas City, Texas where the vehicle was purchased in March of 2020. I am a non-destructive testing inspector; so, once the vehicle got home, I inspected it myself & found it to not only have a crack in the piping but also severe lack of penetration in the welds. Both of these are original manufacturing workmanship defects. The resulting defects present severe health hazards as the vehicle now leaks CO-'' in a location not visible unless inspecting the exhaust system & as the stress fracture grows around the piping it could eventually result in the piping breaking through or loose under the vehicle while driving down the road. If the piping were to break through then the vehicle would no longer be in compliance with the EPA for emissions by a long shot. As it sits the vehicle will fail a state inspection due to the permanent code the computer is throwing from the leak. The above listed hazards have already been noted by the NHTSA in Bulletin No. PIP5681C & in Special Coverage Adjustment N212356540 Front Exhaust Pipe from GM. The bulletin only states the issues; however, the special adjustment provides the 2019 Traverse drivers with an extended warranty for the above listed issues. I would like to request that the 2020 Chevrolet Traverse be considered for the same extended coverage of 15yrs or 150,000mi via GM for the cost of the replacement of the f-pipe, three gaskets, & the muffler as these are original manufacturing defects. If it was not for the vehicles check engine light coming on these issues would have gone unnoticed until an even further point in time taking us further away from the original warranty of 2yrs or 24,000 which is clearly not a long enough period for these issues to present themselves & be corrected.

- League City, TX, USA

I was driving down the street and my car started to randomly jerk. When I pushed the gas the car got slower. Once in a safe place I pulled over and sat there for a few minutes. When I accelerated again the car had a sound like the car was speeding up, but there was no speed. It drifted. So I crossed the traffic light and pulled over again. I turned the car off. I waited for about 5 minutes, turned the car on and that's when the engine light came on. I had to drive slower to make it home. Once I made it home I put the car in Reverse and noticed that my back up camera was not working as well. I am so frustrated.

- Middle River, MD, USA

UNKNOWN We were on the highway when we noticed the engine light come on, then the fuel gage went all the way to empty then back up again. We were going about 65-70 mph. I am taking my vehicle in today to get fixed

- South Milwaukee, WI, USA

The contact owns a 2020 Chevrolet Traverse. The contact stated that the start/stop feature failed while the vehicle was in operation. The contact stated that after coming to a complete stop, the engine stalled. No warning lights illuminated. The vehicle was taken to autonation Chevrolet greenacres service center (5757 lake worth rd suite a, greenacres, fl 33463) and grieco Chevrolet of delray beach (2605 S federal hwy, delray beach, fl 33483) and was not diagnosed nor repaired. The manufacturer was made aware of the failure and provided a case number. The failure mileage was approximately 1,100.

- Boynton Beach, FL, USA

Recently purchased car. On Thursday December 3,2020. Was driving car back home on a busy street, car starting stalling. Would not go past 20 mph, engine was revving. Next morning to go to work car would not go on reverse. Had to get car towed to the dealer and they are telling me that it is a transmission problem. That the transmission needs to be replaced. Devon at rick hendrick in duluth, ga has been nothing but rude since purchase of vehicle now I do not feel safe driving this vehicle and I have 4 young children ages 10, 8, and 5. if someone would of hit me from behind we could of been injured. I bought a new vehicle for the piece of mind of not having any issues with the vehicle and now this. I am very upset.

- Lawrenceville, GA, USA

The contact leased a 2020 Chevrolet Traverse. The contact stated that the vehicle was a modified vehicle with hand controls installed. The vehicle passed testing which was approved by manufacturer. While driving 6-7 mph merging into traffic with the accelerator pedal depressed, the vehicle stalled without warning. The contact was informed by an independent mechanic to disengage the start/stop feature. The vehicle was diagnosed and the contact was informed that there was no option to disengage the start/stop feature. The vehicle was taken to victory layne Chevrolet (3980 fowler St fort myers fl 33901-2604, (239) 936-1541) where it was confirmed that there was no option to disengage the start/stop feature. The vehicle was not repaired. The manufacturer was contacted but no further assistance was provided. The failure mileage was 6,500.

- Ft Myers, FL, USA