2020 Chevrolet Traverse engine problems

Filed Oct 16, 2026 · Engine · 104,000 miles · IL

The contact owns a 2020 Chevrolet Traverse. The contact stated that the check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with a fractured flex pipe. The mechanic informed the contact that the failure was associated with GM Technical Service Bulletin: PIP 5681C and Manufacturer Communication Number: 10211780 (Engine and Engine Cooling), and the contact was referred to the dealer. The vehicle was taken to the dealer, who confirmed the failure was not covered under warranty. The contact spoke with the manufacturer, who also confirmed that the vehicle was not covered under warranty. The manufacturer referred the contact to the federal safety agency Hotline to file a safety complaint. The failure mileage was approximately 104,000.

Filed Oct 2, 2026 · Engine · 82,000 miles · MI

The contact owns a 2020 Chevrolet Traverse. The contact stated that the exhaust system was sagging due to an improperly welded mounting bracket. The contact became aware that an exhaust system bolt was cracked and missing. The vehicle was taken to the dealer, where a technician confirmed that the weld on the exhaust hanger had separated from the subframe, causing the loud rattling sound of the exhaust system. Additionally, the check engine warning light was frequently illuminated, and the exhaust system was louder than normal. The failure mileage was 82,000.

Filed Sep 3, 2026 · Engine · NY

The front intermediate exhaust pipe mounting bracket weld fractured at the engine manifold, causing the exhaust pipe to break completely loose. We can now actively smell raw exhaust fumes inside the passenger cabin while operating the vehicle, creating an immediate safety hazard for carbon monoxide poisoning and driver disorientation. Additionally, the heavy steel exhaust system is completely unsupported at the front, creating an imminent risk of the pipe falling and dragging on the roadway at highway speeds, which could cause a catastrophic crash. The vehicle began getting progressively louder during cold weather between late 2025 and early 2026. A certified Chevrolet dealership technician officially inspected the vehicle, filmed an inspection video confirming this exact structural failure, and attempted to submit it for warranty coverage. GM Corporate denied the claim solely because my VIN is excluded from Special Coverage N212356540, despite the vehicle suffering from the identical manufacturing defect described in the bulletin. I possess the official dealer repair receipt and the technician's inspection video as proof.

Filed Sep 1, 2026 · Engine · MI

Bracket on the exhaust pipes just before the flex pipes broke free and there is now a hole in the pipe.

Filed Aug 24, 2026 · Engine · 84,701 miles · IL

The contact owns a 2020 Chevrolet Traverse. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the vehicle. The contact stated that over time the sound became louder. The vehicle was taken to the dealer, where it was diagnosed with a cracked front exhaust pipe and battery failure. The contact was informed that the front exhaust pipe and battery needed to be replaced. The vehicle was repaired. The contact referenced an unknown recall; however, the VIN was not associated with a recall related to the failure. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 84,701.

Filed Aug 17, 2026 · Engine · 50,000 miles · FL

The contact owns a 2020 Chevrolet Traverse. The contact stated that while operating the vehicle, there was a loud sound coming from the exhaust pipes, and the vehicle failed to properly accelerate, with exhaust fumes inside the vehicle. The vehicle was taken to the local dealer, who diagnosed that the exhaust mounting bracket had failed, causing the exhaust pipes to separate and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The contact was informed that the vehicle was not covered under a manufacturer-extended coverage that was associated with the failure. The failure mileage was 50,000.

Filed Aug 13, 2026 · Engine · IN

Loses oil between oil changes. No visible signs of leaks or odor of burning oil.

Filed Jul 30, 2026 · Engine, Transmission · 150,970 miles · SC

The contact owns a 2020 Chevrolet Traverse. The contact stated that the transmission was slipping and there was a delay while the transmission was shifting gears. The vehicle was sputtering and jerking while driving. While turning out of a driveway and driving approximately 5 MPH, the vehicle stalled. The check engine warning light was illuminated. The vehicle was towed to the residence. The local dealer was contacted and informed that there was no recall on the VIN. The vehicle was not diagnosed or repaired. The manufacturer was contacted but referred the owner back to the local dealer for assistance. There was no additional assistance provided. The failure mileage was approximately 150,970.

Filed Jul 17, 2026 · Engine · WA

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.

Filed Jun 2, 2026 · Engine · OH

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.