On 2005-12-06 20:40, K5Chris wrote:
i believe the 1500hd was only available in crew cab & 6.5' bed w/ the 6.0L.
the 1500hd is the same chasis as the 2500 (non hd). they are both a 3/4 ton chasis, they have a shorter frame than the 2500hd (cant fit the allison in them). for that reason, you can only get the 6.0L engine in them, iirc. i believe they have the 10.5" rear axle. i'll bet that the 1500HD has softer springs thus a lower gvwr than the 2500.
so basically, i believe it was GM's way of making a full-crew cab half ton without shrinking the bed down like what ford did in the beginning.