^ I guess they do things differently (more honestly) in Canada, I contacted the dealer and explained my problem.. they told me to make a service appointment for the following Monday and drop my truck off. they would have to locate the code and they would not give me the procedure over the phone. The guy told me there was a Service charge and an additional hourly rate if the GM tech had a problem getting the code.. It sounded like BS to me so I Had a friend who is big into GM find the unlock procedure.. My neighbor who is a mechanic also came to my house with the procedure an hour after I unlocked my radio.. The point is Chevy did try to bullshit me and its how they make easy money.. I do all my own work on my truck so I would be dammed if I pay them up to $100 dollars to unlock my radio.. like I said before.. I would rip it out and put an aftermarket radio in first..
My point is... it did sound like nonsense and that's why I found a solution to my problem without visiting the dealer Once.
Don't come onto the forum and BS us about how easy it is to unlock when you made 3 trips to the dealer yourself.. The owners manual does not tell you how to enter the code even if you had it.. Which in my case was part of the problem.. But your lucky you got help from an honest service tech..
-Jimmy