hey All
I bought a 07 Tahoe Z71for my wife early this year. it did not havenavi or bose.I gota unit off ebay and whenI installed it the screen said "TheftLock".I took it to thedealership and they charged me $90 to reprogram. Now I have to hookup a amp and amp interface plug, to get my speakers to get loud agian.My question is, if i unplug the plugs form the back is it going to lock up again or will it be fine.

 

You should be fine. Once you program the unit to your truck the theft lock will only activate if you try to place the unit in a another vehicle.