GMC Yukon Transfer Case Engage

My 2000 Yukon Xl Has A Problem With The 4 Wheel Drive. If The Light Is Not Lit You Can't Switch It From 2 Wheel To 4 Wheel Or Vice Versa. As...

The Actuator And The Four Button Dash Switch Was Replaced. When The Four High Button Is Pressed It Blinks Several Times Then Returns To The...

I Have The Vehicle Listed Above With The 4x4 Stick On The Floor And When I Try To Shift It Into 4x4 Nothing Happens; No Dash Lights Or...

The Four Wheel Drive Will Not Engage.

I Have No Lights Coming On Indicating That 4h Or 4l Are Engaged. I Pulled Actuator...shifted W/ Key On...actuator Worked! Shifted Back To 2h...

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...