Purchased my 2020 Silverado LT Crew Cab 4WD in September, and have put roughly 1800 miles on it. I've never touched the 4WD system, so it's likely been in 4WD auto since I purchased it. I did test it at the dealer, so that's possibly when it has been engaged since.
I dropped it off for an oil change, and the dealer said that I need to have the entire 4WD system serviced because it is not supposed to be in 4WD Auto on dry roads.
How much damage or wear/tear could I have caused in 1800 miles? Do you think the 4WD service is totally necessary? Truck seems to operate totally fine.