The dashlights goes out at different times and you have to tap on the dash to get them to come back on. also the heat and air sometimes has to be put on 3 before you can feel anything.
How do you repair the Circuit Board? on 2002 Chevrolet Avalanche 2500
The odometer itself can be repaired if it's what's going out, there's a guide on how to fix it here - www.silverado-odometer-problems.com