Automatic Transmission Gear Indicator problems of the 2012 GMC Yukon

The contact owns a 2012 GMC Yukon xl. The contact stated that while in a parking lot, the contact attempted to shift the vehicle into drive however, the transmission failed to shift into gear. The contact stated that the gear shifter cable had detached. There were no warning lights illuminated. The contact called the dealer and was informed that the vehicle needed to be diagnosed. The vehicle was not diagnosed or repaired. The manufacturer was notified of the issue referred the contact to the dealer for diagnostic testing. The failure mileage was approximately 248,000.