hi all, I have a 2017 Yukon xl slt with 65k mi. I’m having a issue starting the rig. I just get one loud click when trying to start and then nothing. It seems to start after multiple attempts. It happened awhile ago once on a rainy day and then restarted recently (we just hit rainy season, so may be related) I’m reading 12.55v at the post, so that seems good and I cleaned the ground on passenger side checked battery connection all seems good. I read about this else where but no answers. Has anyone found a solution to this problem?