Thursday, January 10th, 2008 AT 6:35 PM
I own a 93 GMC Yukon. The 4 wheel drive just quit the other day. It wont engage the front differential and the l4 wheel drive light does not come on. I switched out the actuator and it still does not work. I checked the wiring going into the actuator with an electrical tester and there is no curent going to it when shifting the vehicle into 4 wheel drive. What else could be the problem?
