95 Jimmy 4x4. It was working the other night as we got a ton of snow, got back home and its not working, its still in 4x4 but the front wheels arent spinning. Its the 3 button electric shift, I have the shift cable permenantely engauged. It will go into 2hi and 4hi fine, and the drive shaft will spin, but the front wheels wont turn. Any ideas?