My youngest daughter and here husband came into town and bought a 16 Yukon denali loaded to the gills. Well they moved all there junk over and got a new hitch for the utility trailer. When they went to leave the damn thing was stone dead. Hit the start button and you get the dash to black out. Well we checked all the connections and struck out. Load tested the battery, not great but not bad. Pulled the fuse box and reset every thing. Tapped on the starter, no good.
So we disconnected everything charged the battery and took a break for a while.
The more i thought about it, i remember my 16 2500 Silverado that i bought brand new did the same ****. It did it twice but just worked when i came back to it later. I had a buddy that worked at the GM house ask around to see if he could find something out. A couple months later he tells me they had a run of bad starters. So we go back out and hit it pretty good and a bit of power starts making it happen. Then it busts right off like a champ. Now it will start right up.
Having a drink now watching ghost rider.