700R4 lockup kit

[flomulgator]

Is the 91 Burb a 2500 truck ???

I'm guessing you're asking me since I was the one who referenced the '91 burb, and although the post is 8 months old the questions still stand

No, my '91 burb is a 1500.
D = 1,2,3
[D] = 1,2,3, overdrive.
Overdrive engages waaaaay too soon, so I end up switching between D and [D] constantly as if it were a manual.