Been a loooooong time since I've been on here. Have had a few trucks since my chevy but have kept it this whole time with a whopping 95,xxx miles. Having issues with my 4wd lately (push button shift). When i push 4hi i can hear an actuator moving and the 4hi light comes on but the tires don't spin. Can hear the actuator move again when shifting back to 2wd. When i put it into 4lo i can feel the diff switching to the low range but again tires don't spin. When in 4hi and i spin the tires on ice i can hear something spinning in the front end....haven't had another person around to look and see if the front d-shaft is spinning but i am assuming it is. I had 4wd a few weeks ago and now nothing. 4wd actuator maybe? Other thoughts?