On Friday, August 4, 2017 at 3:53:30 PM UTC-4, jethro tull wrote:


I don't really understand why there's so much babbling around such a simple
question. The OP is only asking how to unlock his system for an upgraded radio
with cassette player. Plus one has given a link to a page showing the procedure
that seems to answer the OP question.

If it works... is that procedure used to reprogram the *original* radio that came with the car after a power failure only, or will that procedure also work on a radio from a different car or year?

Because it's a security issue, I'm dubious that GM will give out the code unless they figure at this age it's a legacy issue.