Suburban sporadic errors and control unit failure

Sounds familiar. I had similar gremlins in my Suburban, though it's an older model. Were you getting any warning signals or seeing anything on the OBD-II scanner related to the BUS system? Could be a dodgy connection. It's like a loose wire in a complex Christmas tree – one thing goes, and everything flickers.

Thanks for the reply! You mentioned the BUS system connection. Was it throwing specific codes, or was it more of a general 'service required' type of message? I'm trying to figure out if it's something I can tackle myself or if I should just bite the bullet and take it to a shop.

No specific codes that pointed directly to the issue, more like a cascade of errors. In my case, it turned out to be a defective cable connection of the control unit to the BUS system. It's tricky to diagnose without the right tools. Honestly, unless you're really comfortable with wiring diagrams and control units, I'd suggest taking it to a workshop. They should be able to pinpoint it pretty quickly. My repair cost around 155€, so it hopefully won't break the bank.

Appreciate the insight. Sounds like it's beyond my skillset. I'll take it to a shop and mention the BUS system connection. Hopefully, that will save them some time and me some money. Thanks again!