As an Action Master of course, Gutcruncher didn't transform, but it's pretty obvious that he'd have been some kind of tank previously (and he did get an homage in the movieverse 'Sparkcrusher', who did turn into a tank), which is sort of cool. One of the good things about Action Masters is that they did give you some clue about what characters previously had as their alt-modes.
Sadly though, Gutcruncher joins the ranks of all the Transformers that have had little to no fiction devoted to them. He got absolutely nothing in G1 apart from a very brief ad appearance, in the IDWverse he's shown up a few times, bt nothing that you'd write home about, and he's always been very easily beaten as a generic goon, and he's been in a few unoffical gigs. In fact, he's had more time in the Shattered Glass universe than anywhere else, and that's not even this version of Gutcruncher.
Gutcruncher then, is a perfect example of a late era Transformer. Good toy, good tech spec bio, NO FICTION. Here's hoping that he finds his place in the IDWverse, because the characterisation is sound, and well worth a story or two. Whcih, as any good capitalist knows, is always worth a few bob.