when I got the car a few months ago, there was something wrong with the cruise control, the light on the dash would stay on but the cruise wouldn't work and wouldn't go off. the dealership fixed it and said it was just a loose wire and said the blower wasn't working either, but the other day I was driving with the cruise on and it just went off randomly, then came back on about 5 minutes later.
today, I turned my car on and went to turn my rear defroster on and it wouldn't come on. I also noticed that the light on my rear-view mirror wasn't on like it usually is and the little digital thing above that wasn't on. also my heat/air blower wouldn't come on and the cruise wasn't working either. about 5 minutes later everything finally came back on. what could be the cause of this? is a wire loose again or is it something completely seperate?

 

Welcome to the site. I'm not sure what could be causing your issues but maybe someone else will.

 

thank you! and I hope so, if not the dealer said I could bring it in if there were any more problems with the cruise so hopefully they'll stay true to their word.

 

It sounds like there's something going on with a lose wire.

You may want to check all the fuses and relays, I'm not sure if they'd all be on the same one for sure, but one may be lose and it could be causing this issue.

Usually fuses are a safe place to start checking for electrical issues.

 

I don't think it's a fuse, I just checked all of the fuses a few days ago and they all seem perfectly fine. so is there only 1 wire that connects all of these things, or are there multiple? and where are these wires located?

 

They all probably share a common ground. FWIW, on a lot of GMs if you have certain engine codes (wont set CEL) it will disable cruise.