I bought my first used jeep from a chevy dealership. It came with a drivetrain warranty. It had developed an oil leak running down the oil pan and a vibration at certain speeds. I wasted 3 trips and 250 miles taking it back for repairs. I then took it to a jeep dealer with same name and they knew what the problems were within 15 minutes. The chevy dealer tried to tell me it was a 50/50 split warranty and lost!!