2020 Chevrolet Traverse Complaints

SEAT BELTS,FUEL/PROPULSION SYSTEM — Filed 06/18/2026

There is a well known exhaust issue with the catalytic converter and the separating manifold and no recall has been issue yet. It causes the vehicle to lose pressure and shuts off in the middle of traffic. The seat belt secure locks are malfunctioning and could cause loss of life in the event of an accident.

ENGINE — Filed 07/01/2026

GM published bulletin PIP5681A on 10/05/20 regarding defective welds on the exhaust brackets near the catalytic converter. I had the same exact weld failure and GM is not honoring the warranty coverage, even though their bulletin said that all 2020 Traverse SUVs were included.

UNKNOWN OR OTHER — Filed 06/12/2026

The welds that hold the catalytic converter and exhaust pipe together have pinhole leaks. The hose that connects to the exhaust system is also failing. This has been confirmed by the Chevy dealership we took it too. No warning lights were triggered. We heard a rattling noise after having a prior hose replaced. One week later we were back at the same dealership. At this appointment they discovered the pinhole leaks and confirmed there are pinhole leaks while revving the engine to 1,000 RPMs. We requested GM pay to fix the issue and they have refused. Our safety is at risk because no sensors were triggered and we could smell exhaust fumes in the vehicle while using the air conditioning. This is not the first issue we had with this vehicle. Prior to this the whole car died while my wife was driving it with our 2 kids in the car with her. She had no steering or braking.

POWER TRAIN — Filed 05/04/2026

I own a 2020 Chevy Traverse with currently 16,000 miles. I am currently dealing with a know shudder issue that has returned. I have already taken the vehicle under warranty to the dealership where the transmission was replaced on 6/29/2022 at 4919 miles then the torque converter was replaced separately on 9/20/2022 at 8106 miles for engine shudder. This vehicle is practically brand new. I reached out to GM with no help other than to pay to have it diagnosed again at the dealership. There are no open recalls on my vehicle when there should. There is the most recent bulletin, Bulletin No.: 23-NA-072 dated May 2023 that covers the 2020 Chevy Traverse for TCC Shudder: (Typically seen on 4th-5th Upshift as ISS Oscillation) This car is brand new and should never have needed a brand new transmission, torque converter replacement and still having the exact same problems as before.

UNKNOWN OR OTHER — Filed 04/14/2026

Getting error message on and off last several weeks - "Shift into park" which does not allow the ignition to be turned off!! The only way to resolve this issue is to jiggle the gear shift or restart the car, changing gears and trying again. Sometimes it works on the second or third try! Frustrating!!! What is it doing to the shift assembly? Have called local dealer they will diagnose and repair at my cost! In the neighborhood of $250.00 for diagnostic, which will be applied to the total repair costs. No idea what that bill will be. General Motors just advises if it needs repair save my receipts in the event of recall for reimbursement. The car only has 21,600 miles!! I have seen other complaints on line and there are videos on You Tube on how to repair this issue, obviously I'm not the only one this is happening to. The gear shift boot and console have to be removed to repair. If the above actions do not work, how do you shut the ignition off??? Just let the car run until it's out of gas??? Not what I would classify as safe! General Motors should be taking steps to rectify this problem immediately but since they have not had "enough" complaints to warrant investigating further they are sitting idly by! HELP!

ENGINE — Filed 04/01/2025

This is a know issue on 2021 models. The exhaust bracket is breaking away from the muffler/catalytic converter. The weld is breaking causing the exhaust to break away and both pipes must be replaced resulting in a 1500 repair. Why if it bad in later years is there no maintenance bulletin or mandatory fix for the 2020 models? It was repaired and fixed by McClusky Chevrolet in Cincinnati OH.

ENGINE — Filed 02/25/2026

Flex pipe for exhaust is broken at 61000 miles rattles and makes noise upon start up and acceleration.doesnt make sense repairs for model years before and after 2020 are being repaired for free

STEERING,ELECTRICAL SYSTEM,UNKNOWN OR OTHER — Filed 05/27/2026

While driving the stereo went off, the ac, the car stopped in middle of the road and I lost all electrical. I tried turning back on and the emergency brake light was on and the dash said "Steering Assist is Reduced, Drive with Care.” I was able to put it in neutral and get it out of the way. Battery is good Fuses were all checked 350 replaced Car isn’t starting or Turing over, but some of the lights have turned on.

ELECTRICAL SYSTEM,SERVICE BRAKES,ENGINE — Filed 05/17/2026

Brakes have screeching noise Transmission jumps when changing gear The shift to park is so constant can not even go out because it takes more than 20 to 30 tries for it to accept park and turn Vehicle off! I have taken it to the dealer for the concern stated no recall or warranty At this point I am afraid to even leave it in shift to park and walk to the store and it gets stolen or leaves me stranded with my children

POWER TRAIN — Filed 04/20/2026

2020 Chevrolet Traverse started to shudder and hard shift between 25 to 30 miles per hour. Vehicle only has 64,925 miles on it (4,925 miles above warranty). Vehicle was taken to garage and told the torque converter along with valve body was needed to be replaced. The torque converter malfunctioned right after warranty expired due to mileage and could have left my family stranded on the side of the road. The components have been inspected by Chevrolet manufacturer and they deemed they needed to be replaced and replaced them. No lights or anything came on the only sign was the shudder and hard shift which if not taken in immediately could put the owner past the warranty mileage. Vehicle was purchased brand new and routine maintenance conducted.