2013 GMC YUKON XL Engine Problems

The contact owns a 2013 GMC Yukon XL. The contact stated while driving at an undisclosed speed, there was an abnormal sound coming from the engine compartment. No warning light was illuminated; however, the "Service Engine" message was displayed on the instrument panel. The vehicle was taken to a dealer where it was diagnosed that the lifters needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the dealer where it was diagnosed that the lifters needed to be replaced once again. The vehicle was repaired however, the failure persisted. The vehicle was taken to a dealer again to be diagnosed; however, the cause of the failure was not determined. The manufacturer was notified of the failure. The failure mileage was approximately 150,000.