2015 Yukon electrical problems when it rains

[alyssadf]

My 2015 Yukon has weird electrical issues when it rains. The dash says to service front camera, theft deterrent system and airbags and the gauges all stop working. Car will run fine if it starts to do this when driving but if those messages don't go away car won't shut off. I have to pull a fuse but lights still on in car so then have to disconnect the battery to shut off. Sometimes when I get in it to start I push start button and lights come on but all those dash messages come on and then car won't start. But on nice weather days it is absolutely perfect. Im going crazy. Also once in a while for the past year the service side detection sensor message will come on but everything still works when that message appears. Please help! I don't want to go to dealer as I have heard these year Yukons are an electrical nightmare and Im afraid they won't even be able to figure it out.

 

[Yukon2703]

Have you had the transmission done in your truck?

 

[Oh Kee Pah]

My 2015 Yukon has weird electrical issues when it rains. The dash says to service front camera, theft deterrent system and airbags and the gauges all stop working. Car will run fine if it starts to do this when driving but if those messages don't go away car won't shut off. I have to pull a fuse but lights still on in car so then have to disconnect the battery to shut off. Sometimes when I get in it to start I push start button and lights come on but all those dash messages come on and then car won't start. But on nice weather days it is absolutely perfect. Im going crazy. Also once in a while for the past year the service side detection sensor message will come on but everything still works when that message appears. Please help! I don't want to go to dealer as I have heard these year Yukons are an electrical nightmare and Im afraid they won't even be able to figure it out.

Yes, agreed - my 2015 Tahoe LTZ has been (IS) an electrical disaster. I call them gremlins and they run around all over.
Currently, when weather gets really hot or it's raining and I'm driving, I get the "Service Trailer Brake System" message about every 30 seconds - drives me CRAZY! I think that is ultimately a bad ground or wire that is running back to the rear bumper.
From my other readings, all these crazy messages you're seeing could be related to the electrical grounds or negative cable harness.
I've had similar issues with the side detection warning. That warning will eventually bother the computer enough that the car will just NOT turn on. I had to get mine towed out of the garage when that finally happened on me. The rear sensors are located just behind the rear wheels, right where all the water splashback goes. Mine were corroded and that was a major issue.

Perhaps a new electronic control module is worth a try? It would be expensive, but probably cost the same as paying the dealer to poke around for a couple hours...

Darn, wish I had something better. Good luck!