Hi. There is already a Sierra 1500 for donwload, however I did a conversion my self. (IT IS NOT THE SAME MOD).
On this car I added a few features:
All lights work and show reflection as real light, like the originals.
Light Bar on roof
ToolBox (Just for show)
Spoiler
MultiColor option
Washable
Low Trailer Attacher
Better looking textures
Standart script
OBS. I did not modeled this truck, I just converted and edited. I take no credit for it.