I had the same language scrolling issue on my ‘04 Yukon. After searching the interweb I came across someone who recommended changing out the button on the circuit board that is used to select trip miles, miles, language and such. Basically the switch has malfunctioned. I used Radio Shack part # 275-0002 from eBay. Super cheap. Carefully replace this switch. It fixed my issue that I’ve had for a couple of years. I already replaced all of the stepper motors to fix that issue.