2021 Yukon Electrical Issues

[Farrengui]

Hey Guys, I’m new to the forum and I am having issues with my 2021 Yukon Denali, 

I am getting the following Codes: 

 

• U0211, U0214, U0247 → lost communication with modules (seat, door, etc.)
• U0186 → lost comm with infotainment / HMI
• U1962 / U452 / U230 / U1132 → network configuration / gateway faults
• B13AA, B178C → body/seat-related faults

and here is a printout from GMC 

I am thinking it could be a faulty ground or one of the modules, I had the BCM, SDGM and radio module reprogrammed. the issue is that the seats don’t work, Backup camera doesn’t work, trunk won’t open. GMC wants to change each module to see if that helps and that is EXPENSIVE. If I could get some insight of things to check before I jump out there and dump a lot of money into it. I would be greatly appreciative. 

20260426030946199498.pdf