I just purchased a 2003 yukon xl slt. It has 223 miles on the motor and body and 80k on the transmission. It's got the sunroof, 4X4, heated seats, and leather. It's been really well taken care of and has all service records. I bought it from the 2nd owner that was upgrading to a newer 2500HD Burb. Any suggestions on some things that make it a little nicer/convenient? I'm not looking to dump a bunch of money in it, but just any small/DIY kind of things.