The contact owns a 2017 GMC Sierra 1500. The contact stated that while accelerating at 85 mph, the vehicle independently decelerated to 70 mph without warning. The contact stated that the throttle no longer operated as needed. The contact had taken the vehicle to faulkner Buick GMC trevose (4427 E street rd, feasterville-trevose, pa 19053) on two occasions however, the mechanics were unable to diagnose the failure. The manufacturer was also notified of the failure and informed the contact that they had never heard of such a failure. The contact then spoke to an independent mechanic who informed him that the defect may be linked to a speed sensor and a computer malfunction. The contact then took the vehicle to another independent mechanic who reprogrammed the computer software. The vehicle was repaired. The failure mileage was approximately 19,906.

- Feasterville-Trevose, PA, USA