So I have a 2001 Jimmy 5 speed, the other day my service 4wd light started coming on then disappearing. When its off I can shift into 4Hi, 4Lo, and 4-auto. But when the lights on I can't shift into anything. I had a new transfer case put in back in march. Just wondering if anyone else had any idea what it could be? I was thinking the actual buttons are shot, but I don't have the time to go and diagnose everything between school and work. Thanks guys!