HELP!!! Entire Instrument panel not working. RPMs Gas, Blinkers all of it. Saying service everything. (2019 Chevy Tahoe) all dealerships are closed today and I’m away from home.

 

I would be looking at fuses under dash, side of dash and under hood. Get your owner's manual out and check for a related relay. Lots of relays are interchangeable and you can switch them around. Any recent work done on the rig? Also, check any obvious ground strap connections under the hood.

 

Only work done on it recently was routine oil change. I’ll be parking it and taking to the dealership tomorrow. Thank you for the reply!

 

Did you get it fixed? an explanation on what was wrong ?My 2019 is doing the same as you described. Thanks