Why is it that sometimes my 2002 Yukon will not start and the dash lights will not work Then if I let it sit a while and then try it it will crank fine It may need to sit 5 minutes or a whole day it?

The issue with your 2002 Yukon not starting and the dash lights not working could be related to a failing battery, poor connections, or a malfunctioning ignition switch. Heat and internal resistance can cause intermittent electrical issues, leading to a temporary loss of power. Allowing it to sit may give the battery enough time to recover or allow components to reset. It’s advisable to check the battery condition, connections, and ignition system for any faults.