Anti lock brakes



This may be the wrong place to ask this. It may be complex, and maybe not, but......<br>Does engaging 4wd bypass the anti lock brake systems on most trucks? Does engaging 4wd low only, bypass the anti locks, or does nothing bypass the anti - locks?<br>How would anti locks affect tire chain operation, or vice versa?<br>Would not being able to lock the brakes rob the benefits of chains in a braking situation?<br>Anyone run chains with anti - locks?<p>~Chuck Smith<br><p>----------<br>Chuck's Chevy Truck Pages - Snowplowing Central<br>

thelawnguy Addict
Central CT
On Dodge vehicles, it does not deactivate 4wabs. GM trucks it does some model years. not sure about Ford. Rear only abs is unaffected. I removed the controller for rear only abs on my Dodge, abs is dangerous with 4wd. <p>It used to be, at least thru 99 model year, 4wabs was unavailable with snowplow prep on Dodge and also with offroad package due to its unpredictable nature in 4WD.<p>Bill

John DiMartino Veteran
Wow,this is an old post! I got excited and thought lawnguy was posting again until I looked at the date:( .Anyway all rear wheel anti lock brake trucks dissengage the rear wheel antilocks once its put into 4wd,since the front and rear axles are then tied together anyway..I dont know if any 4wABS trucks that do though.

Mick Veteran
John, there have been several really old threads brought up today. A couple made me do double-takes.

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