Theft System light came on, then ALL my warning lights came on and meters dropped to zero

I drive a 2005 Chevy Classic with 160k miles. I had just gotten out of the car wash when I noticed my Theft System light was on (solid, not blinking) which I fear is going to be an issue soon. Soon after I noticed that light, ALL lights on my dash lit up and all my meters dropped to zero for a couple seconds, then everything went back to normal except for the Theft light still being on. This all happened while driving and it never caused me to lose power. Fearing I wouldn’t be able to start my car anymore because of that theft light, I shut off my car and restarted it to see if I could and it worked, which I hope is a good sign. I left it running for only a few minutes but the theft light never turned back on either. Does anyone know what the heck that was all about?

I’ve driven twice since this incident and the theft light has not lit up nor have all my warning lights lit up.