Brakes problem
1994 Ford F150 V8 Two Wheel Drive Automatic

My husband generally does pretty well with know what is wrong...I am the worry wart and worry about costly repairs.

He said he went to back up and the van would not go....He thinks the brakes are locked up and its the master cylinder....Does this sound liikely or can it be something else?

Please don't laugh...have had toooo many things fall apart lately (mortgage...everything else...dont need more vehicle issues that are costly)...I know the master cylinder isnt too expensive...but other things are.

Thanks