Do they all come with 4.10 gear ratio? I was looking at some to buy and they stated that one or two of them had 3.42 ratios? What is true?

 

At one time GM had up on its site the ordering capability to select 3.42 gears on a TBSS, but this turned out to be a site programming error. I would be surprised if you found a TBSS with anything other than 4.10's (unless someone did the swap after they bought theirs).

 

nope all factory tbss's have 4.10 gears 2wd and awd