I have a 1992 Chevrolet Blazer Fullsize. A while ago my abs light and parking brake light both came on a while back and have been on ever since. The brakes and parking brake still work just no abs. I believe I have diagnosed the problem as a dead or faulty abs computer module. When I disconnect the abs system (at the plug in spots around the master cylinder area) the dash lights go off but the brakes and parking brake still work fine. and In addition my abs system does not engage anymore when i turn on the truck. My question is where is the abs computer module located on my truck? I'm told under the truck on the drivers side of the inner frame but i cant seem to find it? maybe i ain't looking hard enough hah. Thanks yall.

 

*Moving to Fullsize Tech*

The ABS module does not inhibit the brakes in any way when it goes into fault mode.

Are you sure that the ABS system is what is causing your problems...? Have you had the codes read from the ABS? You could have a bad wheel speed sensor or it could just be telling you that your master cylinder fluid level is low.

The ABS control module is what is attached to the side of the master cylinder.

On the newer 2nd gen s-series trucks, if you disable the ABS, you also lose cruise control. Not sure if yours will be the same as well.