Engine Exhaust System problems of the 2018 Chevrolet 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.

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.

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 that, upon starting the vehicle, he heard an abnormal sound emanating from the exhaust and could smell gasoline fumes. 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 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.

The contact owns a 2018 Chevrolet Traverse. The contact stated that while driving at approximately 75 mph, he heard a loud thumping noise emanating from the engine compartment. The contact stated that he also observed a smoky smell in the cabin of the vehicle. The check engine warning light illuminated. The vehicle was taken to a 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 while parked in the driveway, there was an abnormally loud sound coming from underneath the hood. The vehicle was taken to the dealer, where it was diagnosed that the exhaust pipe was fractured and needed to be replaced. The vehicle was not repaired. The contact related the failure TSB number: pip5681. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered. The failure mileage was approximately 42,000.

The contact owns a 2018 Chevrolet Traverse. The contact stated that while driving at various speeds, a rattling and squeaking noise was present coming from under the vehicle. The vehicle was taken to the local mechanic, who informed that the exhaust manifold bracket had failed and needed to be replaced along with a section of the exhaust system. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure and informed that the vehicle was not covered under the manufacturer's extended coverage related to the failure. The failure mileage was 55,000.

While driving on rainy day about 20 mph the engine would alternate between a power surge to no power. This continued for several minutes while driving (nowhere to pull over) until the engine completely died. Both the jerking forward and the shutoff while driving could have caused a horrible accident but fortunately we were lucky. The street was a city street, it was a very wet environment, and I was going straight. Traffic was stop and go so the car speed never was higher than about 20mph. All events occurred while SUV was in motion. Engine light was on. Took car in for service. They said nothing is currently a reported issue during the dtc status check but there was a "history" of "lin bus 14 lost communication with device", and a few reports regarding intake camshaft and exhaust camshaft issues. Have not heard the dealer's assessment yet.