Purchased a 2008 GMC Yukon Denali for $28,700 from Lafferty Chevrolet as a certified pre-owned vehicle. Check engine light issue Repaired four times and still having problems. Vehicle has excessive rust and is perceived to be a flood vehicle. No effort by Joe Tabor, sales manager to offer to make the necessary repairs. Basically stated too bad - I can forward his email upon request. I purchased a vehicle which I believed was inspected by dealership. Right front headlight was unattached and no screws to hold it in place. Auto check shows no accidents but the whole front bumper was replaced with aftermarket parts and repainted. Several other issues such as engine knock and emissions issues