Funny thing - had the truck in the body shop for several weeks and when it went in, everything worked. Got it back, and some of the radio buttons don't work. These are rocker style buttons, and when I push the AM (left side) that works. Press FM, and it won't go to FM. Press the right side of the tuning button, and it won't go up the dial. Press the left side, and it will go down. Same for cd. Left side of button goes backward through the tracks, but right side won't advance. Bass/treble button: Press bass (left side) and that works. Press treble (right side), and nothing. Anyone ran across this before?

 

Sounds like the circuit board has been damaged.

 

Check out 1factoryradio2 on ebay if you've got a factory radio that you want to replace.
I've purchased a couple of units from him at fair prices. Usually you can send in your old unit and get a little discount.