I’m soooo done! I have a 2019 Yukon Denali, in Central Texas, looking to trade in for a 2023 Yukon Denali. My Denali has 48,000 miles, beautiful condition, I owe $24,000 WITH ZERO PERCENT INTEREST! Simple??? Nope! The GMC dealership WANTED $10,000 to $15,000 MARKET ADJUSTMENT on top of MSRP, on...