I'm not sure where you live in the Dallas area, but I use to live in Plano and took my VX and the wife's Rodeo to Crest Isuzu in Plano (I-75 and Park). I'm not sure if you're looking for a good dealer to take it too or just a repair shop, so I'll leave it at that until you post more info.

I usually got decent service from them, and the wife too...