2020 Chevrolet Traverse

Cracked exhaust & bracket back in 2023 causing a loud rattling noise. Now catalytic converter is cracked & gasket leak. Dealer does have notes that it was cracked & they noticed it in 2023 at 46k miles & that converter has now cracked causing engine light to turn on. Car does not speed up properly & GM only wants to cover 30 percent of cost.

The contact owns a 2020 Chevrolet Traverse. The contact stated while driving at various speeds, the vehicle made an abnormally loud rattling sound. The contact stated that the failure also occurred upon starting the vehicle. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed and determined that the mounting bracket on the front exhaust pipe had separated from the pipe and might develop a hole in the exhaust pipe. The dealer determined that the front exhaust pipe mounting bracket needed to be replaced. The vehicle was not repaired due to the cost. The dealer notified the manufacturer of the failure, but no assistance was provided. The failure mileage was approximately 85,000.

The contact owns a 2020 Chevrolet Traverse. The contact stated that while parking the vehicle, the message “Shift to Park” was displayed and the contact was unable to turn off the vehicle. The contact stated that there was no warning light illuminated. Additionally, while driving at various speeds, the vehicle jolted abnormally while accelerating. The local dealer was contacted; however, the vehicle was not diagnosed since the VIN was not under an open recall. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 107,000.

Vehicle started to show error for shift to park. Not able to shut vehicle off. Vehicle drives fine but when I go to park and vehicle is in park. I go to turn vehicle off and error appears. I called dealership according to them just to look at vehicle its going to cost me $275.. For everything else $1,100. After reading all the complaints on this issue why has manufacture done anything. Obviously this is a well known problem I've always loved my chevy

For the last year or so my car keeps making this really loud noise and it gets worse within hours/days. We have had it in 3 maybe even 4 different shops to have an exhaust fixed. One shop said that a part of it was never secured like it should have been and they fixed it. Every time we have had it fixed it does it again within a couple weeks/month. I did some research and saw a bunch of people are having the same issue with theirs.

The contact owns a 2020 Chevrolet Traverse. The contact stated while driving 55 MPH, there was an abnormally loud sound coming from the engine. The check engine warning light was illuminated. The vehicle was taken to an unknown dealer, where it was diagnosed and determined that the catalytic converter was leaking and there was a blockage in the catalytic converter. The contact was also informed that coolant was leaking into the engine. The vehicle was not repaired. The contact stated that upon lifting the hood, there was a rodent nest near the engine cover. The contact related the failure to GM Technical Service Bulletin Number: PIP5681C (Exhaust leak, Lean Codes, Rattle Noise, or Catalytic Converter Failure Codes); however, the vehicle was not covered under the TSB. The vehicle was not repaired. The manufacturer was notified of the failure and later informed the contact that the case was closed. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was 85,600.

The contact owns a 2020 Chevrolet Traverse. The contact stated while driving 45 MPH, the vehicle jerked, with an abnormal sound coming from underneath the vehicle. In addition, the contact stated the vehicle failed to accelerate as intended while depressing the accelerator pedal. The check engine warning light was illuminated. The vehicle was taken to Firestone, where the contact was provided DTC: P0420 (Catalytic converter was fractured and punctured, and a bracket was missing). The vehicle was not repaired. The contact then took the vehicle to the dealer where it was diagnosed and determined that the muffler was punctured and not the catalytic converter. The vehicle was not repaired. The contact then took the vehicle to a Valvoline Center to be diagnosed and DTC: P0420; was retrieved. The vehicle was not repaired. The contact stated that the failure persisted. The contact stated that the vehicle was vibrating abnormally while driven with an abnormal rattling sound coming from underneath the vehicle. Upon further investigation, the contact related the failure to Manufacturer's Recall Numbers: N212356540 and N222385510; however, the vehicle was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 102,000.

Purchased the vehicle in 2024, the vehicle recently has been notifying “shift to park” when vehicle is on park and ignition is turned off, the notification stays on and alerting, so I am unable to leave the vehicle. I must turn the vehicle on and off again, while moving the shifting lever back and forth from drive to park, this must be done a minimum of four times before it reads the lever in park position. It’s a safety hazard because, the vehicle cannot be left on shift to park and possibly roll away or drive/excel on its own. Vehicle has not been inspected at this time, when purchasing the vehicle in 2024, car fax report did not indicate any issue with power train. Would also like vehicle to be inspected for missing airbags, when driving 65mph or more, you can hear and feel air coming in and out of side front left passenger side of the vehicle.

Engine light came on couple weeks ago. Code is p0420 so I did some research and inspected the exhaust system and found the weld on the support bracket of the exhaust pipes was cracked and wore a hole between the pipe and the bracket. There are others that have the same problem with different year models Chevrolet traverses. Mine is a 2020 Chevrolet traverse LT