Hello, I'm installing a TNR (used) radio assy in my 04 2500HD p/u. Question is: (a) Is there any hidden problems with this, i.e. theftlock etc? (b) the radio needs "vss" input, what does this controll in the truck, where do I find it (easily), and what does it controll in the radio?
Manny Thanks for help :)
Sir-Col

Not feeling real good this morning, might be a little slow, what is TNR?

the vss input is for the speed compensating volume