Lights on the heater knobs to show temp
The lights were I nothing was touched and the lights went
off the fan and heater still work but can't read the temp
You either have a light out or connection lose and it is not getting electricity, or a ground wither is off. It may take removal of the system to fix. I;d get a good manual or go on line and seesaw to remove it if you are going to work on it. GM likes to hide tabs that hold parts in place. If you don't know the type or location, it can be very frustrating.
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