NHTSA Complaint #11473461 — 2016 GMC SIERRA 1500

Transmission Harsh 1-2 shift. Under light or heavy throttle. While driving the vehicle on first or second shift the vehicle has a delay to engage into shift making it a safety issue under normal conditions. If shift happens under rain will activate traction control almost making you lose control. Due to transmission not engaging correctly or delayed. Upon slowing down the transmission down gear feels as if someone hit my truck from behind. Feels like whiplash from initial engagement to first and second gear and again whiplash for passengers especially kids in car seats when slowing down. # 16-NA-361 information on Transmission Harsh 1-2 shift. This is the bulletin GMC has put out in response to my hard shift when I took into dealer for repair. It also gives the direction DO NOT Replace any parts for this condition. This issue also began at 40k miles and under warranty Dealer doesn’t want to fix. At 80k miles even no warranty dealer won’t fix due to no check engine light on. How can the dealership state they can’t repair the issue being a safety issue. Or give another options to help fix the issue. Other than just buy a new car and hope it doesn’t have the same issues