jeep-N-montero
Expedition Leader
So over the summer the "service 4wd" message started flashing from time to time in the 03 Yukon, end of September it became almost a daily thing(including the occasional switching itself into 4wd) and after watching a few replacement videos I ordered a new switch the other day. Tonight it took all of 6 minutes to swap in the new switch and the issues are gone, I can hear the transfer case instantly switching between modes and life is good again! So if you start getting that message the switch was all of $21 and is the place to start before crawling under the truck, from my research it seems 80-90% were resolved with the new switch.