Hi I have a 2007 yukon Denali it came with 6disc changer radio w/Bose Lux speakers. I replaced with factory navigation radio from eBay. My rpo codes y91 and Qua. I have been to two different dealerships and they can't seem to unlock it. The second dealer got a little futher than the first he got to the point in tech 2 to clear theft lock and it can up error each time. We even tried programming it as Monte Carlo LTZ and got to the entertainment part and there was no F5 option.
Anyone had this problem and did you every get it resolved any help would be appreciated. I'm in akron ohio if you know anyone in my area. Thx.

 

Welcome, Lfair55! Make sure to browse the forum for more info about your car and feel free to post any specific questions you have about your vehicle in the tech sections.