trac controll / 3.73 rear

hey guys, my trac controll does not work . i push the botten and nothing, whats is that? could it be a relay or what. i have a 2000 v6. also, i want to change out the rear and use 3.73. i have auto. what is the best way to go doing this. i dont even know what my stock ones are, but there are to slow. yeah i know, my problem is that i have a v6 auto. what can you do. oh well. thanks for you help

I think the V6's already come with short gears, to make up the fact that it lacks a V8. I dont think you'll feel much difference with 3.73's.. 4.10's is probably the best ones. Since you got a V6, gas mileage wont be much of an issue..

if i didt that, i heard i have to get a posi rear. is this true?