Just bought my 2nd Xterra. I used to own a 2003 until I sold it around 2016. I just bought a 2009 S Sport Utility from the 2nd owner. For the age it was clean and ran good. A/C works but the heat has a strange issue. When the vehicle is driving there is heat but drop to low speed or idle and it's just cool air. Hoping it's just a loose hose or something relatively easy. It does have a new radiator, so no SMOD issue. Happy to be here.