Maintenance on a 2004, minimal offroading, driving on the weekends.

[Rexhaven]

I am planning to purchase a 2004 H1. I will only drive the truck on the weekends on pavement 95% of the time. I live in Dallas Texas, and have heard Hummer dealerships consider our weather extreme conditions (haha). I was wondering if I am going to have the nightmare on my hands that I have heard from tons of people in the form of having it in the shop every other weekend. Again, I am planning on getting a 2004, diesel, assuming that they have come a long way maintenance wise? The particular truck that I am looking at has about a year's worth of warranty left on it. Any input would be much appreciated.

Thanks.