2018 Chevrolet Traverse Engine Problems

Exhaust weld break similar to the 2019 Chevy traverse

The contact owns a 2018 Chevrolet Traverse. The contact stated that while driving at 25 MPH, there were exhaust fumes entering the cabin of the vehicle. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, and the mechanic was notified of a failure with the exhaust manifold. The local dealer was contacted and informed that there was no warranty coverage on the vehicle for the failure. The vehicle was diagnosed, and it was determined that the exhaust manifold weld needed to be re-welded. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was approximately 98,000.

ome customers may complain of a rattle or exhaust noise, a CEL/MIL on, or repeat concerns of lean codes or converter failures. The cause for these concerns could be a broken or poor weld with lack of penetration on the Bank 2 exhaust. Issue is exact same as listed in Bulletin PIP5681A

The contact called on behalf of a customer who owns a 2018 Chevrolet Traverse. The contact stated that while the vehicle was parked, the customer noticed a huge oil leak on the ground where the vehicle had been parked. No warning lights were illuminated. The vehicle was taken to the independent mechanic, where it was diagnosed with a failed low-pressure oil sensor. The contact stated that the low-pressure sensor had separated. The customer was informed that the low-pressure oil sensor needed to be replaced. The vehicle was being repaired. The contact stated that it was the second similar vehicle that was recently repaired for the same failure, with low mileage on the vehicles. The manufacturer was not made aware of the failure. The failure mileage was approximately 63,000.

The contact owns a 2018 Chevrolet Traverse. The contact stated that while operating the vehicle, the check engine warning light remained illuminated. The vehicle was taken to an independent mechanic who diagnosed the vehicle with catalytic converter failure. The contact was informed that the catalytic converter needed to be replaced. The vehicle was not yet repaired. The contact stated that the catalytic converter was previously replaced for the same failure. Additionally, after shifting to park(P), the message "Shift to Park" was displayed. After several attempts, the contact was able to turn off the vehicle. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failures, but no assistance was offered. The failure mileage was 182,000.

Exhaust pipe bracket that is welded to both exhaust pipes broke off allowing firewall side catalytic converter pipe to crack near the head of the engine.

The contact owns a 2018 Chevrolet Traverse. The contact stated while driving at various speeds, the vehicle was making an abnormally loud sound that became louder over time. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the exhaust system needed to be replaced. The manufacturer was notified of the failure and referred the contact to the dealer for assistance. The vehicle was taken to the dealer, where it was diagnosed and determined that the exhaust system needed to be replaced and provided the contact an estimate for the repair. The vehicle was not yet repaired. The failure mileage was approximately 151,000.

I have an exhaust issue with my 2018 Traverse that a Chevrolet/GM refuses to cover. I am getting check engine light that points to a leaking exhaust. The cause for these concerns could be a broken or poor weld with lack of penetration on the Bank 2 exhaust flex pipe bracket. It's a known GM issue on the 2018, 2019, 2020, 2021, 2022 models. GM has a safety bulletin PIP5681 and PIP5681A for this issue. N222385510 is the number for the 2021 recall. The dealership said it will not cover the repair because my vin has no associated recall. GM allowed the repair of the 2020 under the same recall number. This should be covered under Exhaust Warranty.

Metal found in transmission and new transmission needed. 2018 Chevy Traverse

The contact owns a 2018 Chevrolet Traverse. The contact stated that when the vehicle started, the engine made an extremely loud sound and smoke came from the exhaust. The contact stated that the vehicle sounded like a motorcycle. While the contact's wife was driving the vehicle, there were fumes from the exhaust entering the cabin of the vehicle. The contact stated that his wife had asthma, and the fumes affected her breathing while driving the vehicle. Additionally, the contact's wife was the main driver of the vehicle. The vehicle was taken to the mechanic where it was diagnosed with a fractured mid-pipe assembly bracket. The contact was informed that the mid-pipe assembly bracket needed to be replaced. The vehicle was not repaired. The contact was advised to take the vehicle to the dealer. The dealer was made aware of the failure. The vehicle was scheduled to be taken to the dealer for diagnostic testing. The manufacturer was made aware of the failure and a case was filed. The contact was informed that the repair was not covered under an undisclosed Technical Service Bulletin. The contact was informed that the vehicle was not associated with the Technical Service Bulletin. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 88,835.

The contact owns a 2018 Chevrolet Traverse. The contact stated while the vehicle was parked, the check engine warning light was illuminated. The vehicle was taken to a dealer where it was diagnosed that the emissions purge valve needed to be replaced. The contact did research and was made aware of Technical Service Bulletin Number: N232395300 however, the VIN was not included. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000. 

bracket on the exhaust flex pipe bracket broke. This is a known issue by GM (PIP5681C) that covers 2018-2022 Chevy Traverse and Special Coverage notices have been issued for at least the 2019 (N212356540) and 2021 (N222385510). I called GM today and they said my 2018 Traverse would not be covered even though it is a known issue and had a bulletin issued on it. If this is a known issue for several years (including 2018), why wouldn't the 2018 model be included and covered?

The contact owns a 2018 Chevrolet Traverse. The contact stated while driving 65 MPH, there was an extremely loud sound coming from underneath the vehicle. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the catalytic converter, observing that the catalytic converter had detached from the exhaust pipe. The vehicle was repaired, but the failure reoccurred two additional times. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 92,000.

The contact owns a 2018 Chevrolet Traverse. The contact stated that upon starting the vehicle, there was an abnormal sound coming from the exhaust and smelled a gasoline odor. The check engine warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 50,000.

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.

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 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.

The contact owns a 2018 Chevrolet Traverse. The contact stated that the vehicle was emitting a vibrating and rattling noise while driving. The contact stated while driving at an undisclosed speed and attempting to accelerate, the vehicle lost motive power. The contact stated while driving uphill and accelerating, the engine backfired. The check engine warning light was illuminated. The vehicle was taken to the dealer who diagnosed that there was an EVAP leak. The vehicle received an undisclosed repair however, the failure persisted. The contact stated that the vehicle occasionally failed to immediately start-up. The vehicle was taken to the dealer but was not diagnosed because the check engine warning light was no longer illuminated. The contact stated that the failure persisted, and the check engine warning light illuminated, and the rattling noise became more prominent. The vehicle was returned to the dealer who diagnosed that a weld had fractured on the exhaust pipe. The vehicle had not been repaired. The manufacturer was made aware of the failure and confirmed that the VIN was not under recall. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 65,000.

The contact owns a 2018 Chevrolet Traverse. The contact stated that while driving at approximately 75 MPH, there was an abnormal thumping sound coming from the engine compartment. Additionally, the contact noticed a smoky smell in the cabin of the vehicle. The check engine warning light was illuminated. The vehicle was taken to an unknown dealer, where it was diagnosed that the exhaust system needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 139,136.

The contact owns a 2018 Chevrolet Traverse. The contact stated that the vehicle was shaking abnormally at start-up and while idling. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the purge valve was defective. The contact spoke with a dealer and the dealer confirmed that there were no recalls on the VIN. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 93,000.