I did it! I got her home. My first Tahoe, a PPV. She's a 2014 with 150K on it. Ice cold AC BUUUT it has a Cyl #4 misfire. I swapped coils, new spark plug and wire on that cyl and no change.
When it was idling today, I can smell raw fuel and it had a little white smoke, but smelled no coolant or...