We are considering buying a 2016 Suburban LS 5.3L V-8 (SIDI, Active Fuel Mgmt), without ANC, but with 20" wheels. I have been reading this particular forum thread for almost three hours. How prevalent is this problem and does anyone have a normal experience with these high-end SUVs? Does the Rear Axle ratio seem to make a difference? The one we are considering has the 3.42 Ratio for Max Trailering, as opposed to the normal 3.08 ratio (GU6 RPO). Also, does the sunroof seem to be a contributor? Is there anything else to look for in Suburbans that DON'T have issues? I'm trying to do my due diligence before dropping this kind of money on a vehicle. Thanks so much in advance - ANY advice would be appreciated.
