I guess they really wanted to sell you the module.Audio express told me that the OBD port wouldn't work with out the onstar module. So you wouldn't be able to plug in to read and clear trouble codes.
:iamwithstupid: Same here. Ditto on the Axxess from what I've read.Steering wheel controls go with the one I linked in the other thread. WAY better than the PAC module. It's made by Metra and called the Axxess steering wheel control interface. Google it.
For other thing, I don't know. I bypassed all my stuff and lost chimes and onstar, both of which I don't care for.
Fixed. :cheers1:Yeah give me an hour!