That was my thinking as well
@
kenwilliams0803
The OP does not mention any warning lights on the dash, but I also would suggest getting a code reader and pulling the error codes.
Here are a couple of the threads
@
kenwilliams0803
mentioned (including his - which I found very helpful!)
NSS/Range Selector Switch - P0705 code
First issue with my truck, any ideas what's wrong?