I have a 2005 GMC Canyon that is having a problem getting into 4wd. It happends every year when I work in the field. Driving through conrstalks breaks a wire and they repair a wire that breaks. I'd rather not pay the $ this time and repair the wire myself. Anyone know what wire this might be? A wire under the vehicle that must go to some module or something that puts the vehicle in 4wd? Thanks!