Master cylinder loose at firewall!

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My 1984 GMC 3500 pickup the Master cylinder is loose at the firewall, bounces around when I hit the brakes. still working good, but I'm sure it's . I'm no mechanic, but can fix it if I'm told what to do. PLZ help! :banghead:

posted by  Sherrielyn

i'm about 90% sure you have p/s pump assist but either way the mounting will be similer to the pic check the mounting bolts/nuts on the floor side behind the dash there loose or the mounting plate is broken free from the floor/firewall

posted by  osborste

Please don't drive this vehicle until it is fixed, I don't want to be in front of you when your master cylender falls off. :mrgreen:

posted by  srober32

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