Does not work for cadillacs
Crutchfield Customer Review (What's this?)
This does not even deserve the 1 star that I am giving it. It does not work in Cadillacs. It screws up the battery,(car goes dead overnight), The alarm system,and messes with onboard diagionstics. I Called Metra and there fix is to rewire the stereo and remove the rear seat and rewire the power door lock relay. Great news for a part that supposed to fix the aftermarket head unit install. A waste of good money!