I need some advice on my daily driver. I have a low mileage 2006 Silverado with a 4.3 Vortec and a 5 speed manual trans. It's been a great truck and I don't want to get rid of it but I'm having arthritis problems in my left knee and driving it in rush hour traffic everyday is really aggregating it. I'd rather just swap out the manual to a 4l60e and keep the truck. Swapping the trans and steering column is no big deal but does anyone know what wiring changes I might have and if the PCM will have to be changed for the auto trans? Any help would be most appreciated.