1995 GMC Jimmy Q&A

1995 GMC Jimmy Question: when i try to stop the brakes lock up no matter how hard or soft i press them

i did not do any thing to them ,, i think i touched something under the hood -
Answer 1
Are there any warning lights on? ABS lights? -
Comment 1
any help........... this site is worthless -
Comment 2
Do the front brakes lock up? The rear brakes? Both? I'm trying to help you, but if you cant provide more information, I can't help you. -