2010 KW possible bad cecu

[Bigmack713]

(06-22-2025 )Btech Wrote:  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.

I did take dash apart.but didn't see anything obviously chaffed or rubbed through.since the last 3 years of owning the truck,My tach has never really worked properly, speedometer also acts up sometimes.the digital display sometimes freezes and comes back after the truck has been of for 15 minutes.this latest issue started since we got some heavy rains and water dripped on top of dash from the windshield not being sealed properly..my windshield guy was having a problem working around the visor and left a small spot without silicone.
Since the water dripping on the dash , sometimes I step on the brakes and blinker comes on , or washer functions comes on , like they were being powered at the same time