Hi all, I have an 08 Yukon and just the other day it started having some kind of electrical issue. I was sitting idling and it just shut off by itself but the radio and AC were still on, just the motor shut off. Tried to crank and nothing. Took negative lead off battery and put it back on and it crunk up and ran fine for about 2 minutes and the the same thing, but this time it would turn over and when it did start it was in engine power reduced mode. Took cable off again and it crank up and ran right for another few minutes and then did it again. Now it’s to the point when it does shut off and I try to start it back it won’t do anything for a few seconds and will finally click frantically like a bad battery and then it will start but be in reduced engine power. I’m no electrician and this is stumping me. Anybody ever had similar issues? Also the alternator and battery and only about 5 months old