Automatic Transmission Torque Converter problems of the 2015 GMC Canyon

While driving at a steady speed, when attempting to lightly or moderately accelerate, a lack of power is noticed due to torque converter lockup. Engine comes close to stalling out. In may 2016, I was informed gm engineering was aware of the problem were working on a solution. During a followup visit in September 2016, I was informed that gm no longer considered it a problem and were no longer working on a solution. Gm tac # 8-2110571583. There has not been a specific accident related to a lack of acceleration when expecting to accelerate, there remains the potential especially when merging into freeway traffic during peak travel times. The gm district service mgr drove the truck and informed me that there was no issue as he drove the same vehicle type and had the same performance. Per recent gm marketing, the 2017 GMC Canyon features a completely re-designed transmission. I believe this issue with the transmission is a safety issue caused by a poorly designed transmission.