Is the service 4×4 light on or off?

Is the service 4×4 light on or off?

Service 4X4 light on. Service 4×4 light on dash. 2003 GMC Sierra 1500hd 6.0 4L80E, fully automatic 4×4. Has been working on and off. Usually the light is off after a few days, then the 4L lights up and stays on even though I am driving freeway speeds, transfer case is in 4H but dash says 4L.

Why is the service 4WD light on on my GMC?

Some customers may comment that the Service 4WD light is on, the 4WD system is inoperative, the 4WD switch indicator lights are blinking or that a grinding noise is heard from the front axle.

How to install service 4×4 light on Dash?

Carefully position the new encoder sensor to the large gear aligning the key way slots. Just begin the insertion of the keyway over the key. Press the sensor onto the large gear using a inch deep well socket. This will ensure proper installation of the sensor. Notice: Not using the socket to press the sensor on may result in damage to the sensor.

How can I get my GMC Yukon XL back to 4WD?

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. My Truck is stuck in 4WD Low.

Is the 4WD light on on my Yukon?

No lights on 4wd switch..seems to have power but put on a new switch and still nothing. 4WD does not work. upon starting, 4wd low is already engaged, difficult switching out of low. has happened twice.

Why is my GMC Yukon stuck in 4WD?

Has gone into 4WD LO mode by itself. Can’t change drive mode. Problem and message will go away for weeks sometimes. 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.

Why is my service 4WD light not working?

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.