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My 2005 Yukon XL

So I've still been struggling with a Bose sound system issue. It's like no bass, at all. Been that way since I bought it years ago now.

I had a revelation about a YouTube video I saw about bypassing the factory bose system by unplugging a gray connector in the dash, and plugging that directly into the HU instead of the green connector. I remember seeing a empty female gray plug back there. The PO must have been doing some wizardry in there.

So today I hooked it up correctly while installing my new LED capable flasher as I was having intermittent turn signal issues. Now I have no sound, but the HU seems to be working. No door chime either. Now my focus is on the amp. Sounds like this is a stupid complex system and all of my inoperable functions go through it. Lots of people say to bypass and get aftermarket for better sound, but I am OK with stock. I just want stock back.

Luckily I have a spare JY unit to try. Daylight ran out so will have to do it some other time.
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