Would a Chevy 1500 HD be a good truck to tow with?

If it was my trailer I would want a 250/2500 truck for towing. The way I understand it, the 1500HD is similar to the 2500 in many ways but not all. MPG probably will be in line with a 2500 of that vintage with a 6.0 and 3.73. My point is you may want to also consider 250/2500's that are available in your price range. To also consider the 250/2500's may give you a larger selection to choose from.