2010 KW possible bad cecu

[Btech]

No chassis node on a 2010, they were introduced for model year 2012 iirc.

My first thought is a possible issue with the multi function switch/stalk since the functions you are having issues with all have controls on it. If someone can plug in and connect to the CECU with ESA software they can check all inputs, etc. to the CECU and see any faults it might have stored.
But it could also be a CAN wiring issue inside the dash. They are common to rub wires through down where everything bends behind and goes to the upper part of the dash from the CECU.

I've only ever had to replace one CECU that was bad and I've been working on majority KW/Pete for the last 10+ years. Many wiring issues though, typically within 18in. of the CECU.