Two problems related to engine exhaust system have been reported for the 2015 GMC Sierra 3500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 GMC Sierra 3500 based on all problems reported for the 2015 Sierra 3500.
The contact owns a 2015 GMC Sierra 3500. While driving, the service exhaust warning error indicator illuminated. In addition, the service trailer brakes error message illuminated, which caused the brakes to fail on the trailer. The contact unattached the trailer and the vehicle was towed to the contact's residence. The vehicle was taken to growney motors (1160 main st, red bluff, CA 96080) where it was diagnosed that the heat sensor needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 36,500. The VIN was not provided.
While driving white smoke bellowing out front right tire wheel well. Upon inspection, smoke coming from exhaust pipe clamp near turbo. Smell so bad have to drive with window open. It appears engine on fire from the amount of smoke emitting from under the hood. At idle it get worse. It appears smoke is exhaust fumes leaking from the pipe joint. No engine light to indicate a problem.
| Engine Exhaust System problems | |
| Engine Knocking Noise problems |