ABS and LSD lights on dash

Started my truck yesterday and both the LSD and ABS light came on. There not flashing just stay lit while im driving.

Anyone with more knowledge than me have an idea on where to start without taking it to the dealer?


Thanks

 

ABS wheel speed sensor, most likely.

 

Wheel speed sensors are actually pretty easy to diagnose if you have a digital meter. Remove the plug, put your meter on it, turn the wheel. You should get around 200mv if I recall correctly. I did it on my son's ZR2. On those, rust under the surface where the sensor mounts was enough to drop the voltage enough to trigger the light. I cleaned the surface with a file, remounted it, and was good to go. There is a reluctor wheel inside the hub assembly, distance to the sensor is critical. Again, my experience is with a GM, but I assume that it would be the same.

 

I would check the fuses first. If I remember correctly ABS1 will light abs and traction control, ABS2 will light abs, traction control and brake lights.