Guys - got a 2000 chevy Impala, 130K MILES - started it up yesterday and noticed the overhead computer didn't turn on. Then tried to turn on the heater - and the dials did not work. Tried to hit the back window defog, and the buton didn't do a thing.

Drove for a few miles, playing with the heater dials and suddenly the heat came on and 3 mins later the overhead computer turned on.

This morning, started up the car and same thing.

Anyone know if this could be a fuse, a circuit or what?

 

I am having the same issues plus my cruise control stops working.
Must all be on a circuit with an intermittent relay