Looking for a Certified Pre-Owned Vehicle, found candidates at various dealerships, including Suburban. Made an appointment to see James, who was diligent in prepping the vehicle for me to see and pleasant in the sales process, although I did get a whole lot of waiting for the "let me check with my manager" routine. So much for the good news.
The bad: James promised to send me a touch-up pen to fix some minor paint defects. Never arrived. James promised to return the license plate frame (we swapped plates; the dealership removed the plate and the frame, then replaced the frame with a frame advertising the dealership) which the dealership had removed. Never arrived. And the kicker: Three weeks after purchase, I needed tire service. Turns out that the key for the wheel lock wasn't in the car (meaning it would be impossible to, say, change a flat). Three messages left for James went (and remain) unanswered. An online "chat" with their customer service rep promised that she would forward my issue to the appropriate department, which would get back to me. Never heard from anyone. And, when I finally just drove to the dealership service department and explained to the service rep that the wheel lock was missing, his first words to me (literally) were, "Well, I'm not going to pay for that." Finally got a replacement lock from a cooperative, pleasant parts department guy.
Bad experience with one person could just be a blip. With two people, maybe more than a blip. With three people -- INCLUDING THE CUSTOMER SERVICE REP -- these guys obviously have a problem. Skip Suburban... there are lots of places to buy and service a vehicle.