I have been using the site since before Christmas without actually posting. Ordered a 2006 GMC Sierra 2500HD CC SLT D/A 4X4 on February 4. Expected build date was the week of February 27. Hopefully it will arrive soon. Current ride is a 2000 Ford F250 Powerstroke. This has been a great truck. The 7.3 motor has been bullet proof. If the Sierra performs like the Ford I will be very happy. We are not a one brand family. We also own a GMC Envoy. I could not pass up the fleet deal I got on the GMC. I am also a little concerned with some of the 6.0 problems. Great site, very informative. I utilise sites like this one to assist in my buying decisions.