I'm bettin' on the actual switch in the door. The motor would've gotten slower, and maybe quit half way up a few times first... regulator, same deal... usually some warning, often lots, before actual meltdown. Switches, like fuses, generally quit. Didn't look, but I'd bet the door switches are common to Rodeo, Trooper and Axiom too. Cheap, easy fix. Check all fuses?? How 'bout the all important window locks (just playin') Good luck, either way the fix is not a complicated one