Two problems related to vehicle shudder have been reported for the 2015 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 GMC Yukon based on all problems reported for the 2015 Yukon.
Tl the contact owns a 2015 GMC Yukon denali xl. While attempting to shift the vehicle from park into drive, the transmission made a hard clunking sound. Also, while driving between 30-50 mph, the vehicle vibrated abnormally. The vehicle was taken to lewis Chevrolet Buick of liberal (located at 202 n grant Ave, liberal, KS 67901, (620) 624-2584) where it was diagnosed that the transmission fluid needed to be flushed and refilled. The vehicle was serviced, but the failure persisted. The manufacturer was contacted. The failure mileage was unknown.
Transmission has been clunky and jerky from from purchase. The vehicle vibrates between 30 - 35 miles per hour when shifting. The vehicle lurches forward when accelerating as if it has difficulty down-shifting. The problem is present from simply backing up out of the driveway, modest speeds on city streets, or on the highway. When brought back to the dealer, they claimed it was a software issue and "refreshed" the software. The problem has not gone away and did not improve by this software correction. My internet research indicates that this is a common problem with the new 8-speed transmission for the 2015 Yukon denali and Cadillac escalade.