ok my front passenger break locked up as i pulled in to the parking lot at work. i'm now at work waiting for a tow truck. what do you guys think the problem could be?

just thought i'd ask because i can't work on it till later and its raining and i can't go about doing anything toward fixing it. its so frusrtating.

 

if it's not the bearing then it could be the piston on the caliper. if it is from the master cylinder, another wheel will lock as well. if you got ABS, then it can be from the ABS hydraulic unit valve too.

if you will release the bleeder screw and no pressure inside, then its mechanical (caliper).