ABS on when in 4LO and locker

Just checking to see if ABS light should be on or not when using 4LO and or the Locker.

Truck is a 06 if it matters. I have not used 4LO or the locker since I bought the truck about 6 months ago. I decided to try it out since it snowed finally here in Chicagoland and it all worked but just throws the light.

TIA

 

Thanks for the info. I will double check to see it only comes on when the locker is engaged.

Makes sense since the rear axle is united as one once engaged, so what would ABS do anyways.

I searched ABS and did not see it pop up so wondered a bit that I was the only one to have the concern.

Thanks to all.

 

Thanks pal, bought the truck used, no manual