by Armstrong » 5 Feb 2015 1:19
If they are transponder keys then it is gonna be easy. If it is not a bully key and has pk3 on it, it is for older models and can be used for older chevy like 2000 to 2004 . they could be B99, B97, B103 but to be honest they all have same type of chip and can be programmed , the other chevy is little but bulky and it is for newer chevy and we call it Z Key way, started from 2004 chevy malilbu and it has + sign on the blade which is B111. I don't know if i answered your question but if u provide some pics i can tell you which one is which.