Saturday, September 1st, 2007 AT 8:35 PM
1999 Yukon 136000 5.7L The last time I tried fourwheel drive the light on the selected option starts flashing but will not completely engage. When I try 4Hi I can hear the tranfercase actuator moving. It will move back to 2 Hi but nothing else works at all and none of the buttons will move the front axle actuator.