Traded in my 2017 GMC Sierra for a 2020. Both have the 8 speed transmission 5.3 engine. I have noticed the trans temp on the 2020 is much hotter? The whole time I had my 2017 the trans temp never went over 185 pulling a trailer on 100' Texas days. The 2020 is running at 185 not pulling anything when its 80' outside..this normal for the new models?