I have a 2015 Chevy 2500 HD crew cab LTZ 4x4 that while I was towing my 15,000lbs fifth wheel trailer this weekend the steering seemed like the I lost power when I slowed down to make a right hand turn onto the interstate. The steering continued to do this and feel very stiff where I had to crank hard on the wheel to get it to turn while slowing down. Once the RMP got above about 1000 the issue seems to go away. Has anyone else had a similar issue.