[95 S_Trucker]

Have someone scan the ABS system for codes.

My guess is you'll have an EBCM Relay circuit code. C0265, and possibly some communication codes.

If you have those codes, you'll need to check the ground.

I've seen the ground issue, but I've also seen a bunch of bad EBCMs.



Also, check the brake fluid level, there is a sensor in the reservoir that will turn the red brake light on when the brake fluid is low. If the fluid is low, check the steel brake lines. They rust out on these trucks. Sometimes its a pinhole, other times it can be catastrophic.