I recently purchased a used truck from Cadillac of South Charlotte. Sure, the staff are very friendly and accommodating - all car salesmen are. After purchasing the vehicle with zero negotiation offered (apparently it's their 'policy'), I drove my truck off the lot. A few miles down the road the front headlight FALLS OUT and slams against my hood. I pull over on the interstate, remove it and go back to the dealership. They were accommodating but merely glued the headlight back in, leaving the actual repair to me later when I have to change the headlight. FOUR DAYS after driving my truck off the lot I get a check engine light. MAP Sensor is faulty and random misfires in the spark plugs. $300 fix within four days of having the vehicle. Called Cadillac of South Charlotte and, you guessed it, they told me "the light wasn't on here." It's easy to reset the computer and have the light come on later, which is what myself and my mechanic believe happened. It's too soon after purchase for it to be a coincidence. Now I know why they wouldn't do a 30 day warranty. Also took three days and six calls from me for them to even answer my phone call about it. Friendly guys at this place, but clearly peddling used cars that will fall apart once off the lot. Not impressed.