GMC Yukon XL 1500 Problem Report
GMC Yukon XL 1500 Service 4WD Message May be Displayed
The 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed.
Gets stuck in 4 wheel drive and does not return to 2 wheel main driving position - Visitor
When I start my 2005 GMC Yukon, it will often times, by stuck in 4WD and won't switch to 2WD when I push the 2WD button. I've changed the actuator, but it's still stuck in 4WD. I've already purchased the encoder ring, but, after watching an installation video on "YOU TUBE," it talks about RE-PROGRAMING the encoder ring. How in the heck is this a DIY project if I don't have the computer programing equipment?!! - Visitor
Getting SERVICE 4WD on cluster. All lights out sometimes on push button control. Bulb test passes. Has gone into 4WD LO mode by itself. Can't change drive mode. Problem and message will go away for weeks sometimes. - Visitor
it would switch into 4WD on it's own and I couldn't get it switched back to 2WD. It did this randomly. I took it in for repair...I had an extended warranty. They said it wasn't covered. Had to replace the Transfer Case control module sensor. I think it should be covered...nothing I could have done to prevent this. - Visitor
Can't shift into 4 wheel drive without getting stuck in. 4 wheel drive - roxymaxx
intermittent "service 4wd" message resulting in total outage of 4wd and even involuntary shifting into 4wd Low. - Visitor
Yukon would switch itself into 4wd from 2wd.
My wife figured out how to turn off the ignition and get it back into 2wd again.
Glad to know that its the sensor that needs to be replaced. - Visitor
upon starting, 4wd low is already engaged, difficult switching out of low. has happened twice. - Visitor
Same as previous posters. Intermittently goes into 4-Lo. This is a safety hazard, and another thing for GM to be ashamed of about this particular vehicle, which is both the worst AND most expensive I've ever owned! - Visitor
used to stick in 4 WD Now it wont go in 4 WD atm all - Visitor
Service 4WD notice routinely reported on dash. Inability to change 2WD to 4WD (or back) particularly after extended running period. Periodic solution by turning ignition off then back on, but solution is unpredictable. - Visitor
service 4wd message on dash and no lights on selector switch - Visitor
same problem others described.
light can be on 2WD, and other times in neutral
one time slipped into 4 LO while in motion.
occasionally service 4WD message comes on instrument cluster - Visitor
Yukon gets stuck in 4wd low. The lights blink when attempting to switch, but will not work. Check engine light indicated a sensor problem. The problem has occurred before, but this time it switches to 4wd low and sometimes will not move. Very frustrating. - Visitor
Lights were intermittent with difficulty shifting into 4 low.. Now it won't shift into 4wd at all and the indicator lights are out. I've already had to replace an automatic hub.. Rear hatch actuator failed and can't open the hatch. Paint is peeling around the rear wiper arm.. without a doubt the WORST LEMMON I have ever had the misfortune of spending a fortune on to own. Sorry GM.. You guys SUCK !! - Visitor
2015 Youkon xl. 4WD not working. "service 4WD" on screen.
Car has 1.200 miles on it. First snow storm. Not happy. Serious safety issue. I depend in 4WD. - Visitor
Transfer case and encoder motor needed to be replaced as the 4wd was stuck in the "on" position while the electrical components showed it in 2wd. - Visitor
Stuck on 4WD Low. - Visitor
Stays stuck in 4wd - Visitor
Randomly switches from 2WD, 4WD, 4Low then to no lights on. No one had been able to help us with this issue. Ongoing for 3 years. - Visitor
replaced switch &transfer case 4x4 controlmodule
The steering wheel position sensor may fail, resulting in the service stability message being d...
Purchased used about a month ago. Switch button shows 2WD and won't change. Forums suggest it...
Had a good snow storm and put vehicle into 4WD L, Push-Button Automatic. When trying to return...
I replaced my failed rear hatch lock actuator a few months ago. It just failed again and I beli...