Thinking of buying a used 2007 suburban

Hey folks. Going to look at a 2007lt z71 package with 100k miles on it. They are asking 11k for it and I'm not all that comfortable with a car that old but the miles are low and the price is good. I'm seeing mixed reviews online and I'm wondering if anyone here has had one or can tell me what to look for to avoid getting into a money pit? Any known issues with the motor or trans?