I'll use the term "build codes" for the three-digit codes found in the glove box of the truck on the Service Parts ID. I just purchased this model, and some things don't make sense. The truck is an extended cab, 4X4, Z71. I cannot determine if it is a WT, LS, or LT.
I tried using a site, rpcodes I think, to match up the codes, but everything is not listed, and the code for color sure doesn't match. What is the best resource for these codes?

It's a Z71...that's the option package.Z71 consists obviously of the 4 wheel drive,but i think it also includes a limited slip rear differential among other things.