a friends 01 has doen this twice, first time was about a year ago, and then again a coulpe days ago when the first cold night hit. the lever wont move from park, but let the truck warm up, and it is fine??? would it be the park lock solinoid in the coloum, or a brake switch, or something different? just wondering if this is any kind of a common problem before we start throwing parts at it.

 

Most likely some kind of linkage that is bent or broken. Take off panels and take a look.

 

my old 94 used to do it to and as best we could figure it was just cold fluid that didnt want to move through the lines cus when we put a heater out in the garage with it and pluged the block heater in it didnt happen any more