Problem with tire size..

[Insults]

If i put the tire size to anything over 35" i get abs and brake lights, the 35" tire option had my speedo dialed in perfect with my 36.5" tires but i'm upgrading to 37.7" tires now and i'm gunna need to up the tire size on my predator but only if my abs and brake lights aren't going to come on, anyone know why they do?

Btw its a 04 Chevy 2500hd gas.

[06MonteSS]

not gonna happen... you're going to get the lights... tires/setting is too big for the factory size limits in the ABS module... once you go over a certain size, it throws the lights/issues... check with your dealer to see if there's any way they can update/change the abs module programming to allow for the new size you need...