How can I tell which model of the VVT 3.6L I have in my 08’ SRX AWD ? When trying to order a timing chain set there’s a lot of options from Rockauto. They mention a silent upper unit and some come with gears and some don’t. None come with the VVT gear and some have chain link counts. How can I...

Hey guys, I recently replaced my 2008 Cadillac SRX stereo with a similar type because the old one was only displaying but produced no sound. However, the replacement would not even come on, and has been displaying "locked" ever since. I went to the dealership and the figure they quoted just to...