Electrical Problem

Wife reports all idiot lights come on an all gages go crazy . If she shuts off and restarts it, all lights come on, go off and return to normal... This has happened each of last two trips to town.
Where do I start? 2001 Blazer 4wd, auto, 4door.:mad:

I wonder if this could be the famous (or infamous) ignition switch problem?

Check the alternator and battery first - Blazers do that as the voltage drops.

Thanks for the input. Vehicles seem so much more complicated than the 57 Chevy and 63 Corvair of my youth... Haven't worked on vehicles in years, time to get back to it. I'll have to go to Auto Zone or Advance and have it checked.

Started T/S with battery connections. Pos term would turn under bolt. tightened both and made a sucessfull trip to town and back. Maybe I got lucky. Anybody know how to unlock radio/CD player? Must have had intermittant open at battery as everything works ok except radio/cd.