Master Cylinder - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dim Pete · 07-25-2016, 11:46 AM

Hi, got my first classic truck a couple months ago, 1972 GMC 1500. Last week the dash brake light came on, I checked the fluid and the front level was a little low. If the master cylinder was leaking into the booster, would both the front and back sections of the cylinder lose fluid? I do not see any obvious leaks around the brakes, and they work fine. I do not want to replace a master cylinder if that is not the problem. Also, how do I reset the dash brake light. Thanks for the help.

07-25-2016, 11:46 AM	#1
Dim Pete Registered User Join Date: Apr 2016 Location: Spencerport, NY Posts: 1	Master Cylinder Hi, got my first classic truck a couple months ago, 1972 GMC 1500. Last week the dash brake light came on, I checked the fluid and the front level was a little low. If the master cylinder was leaking into the booster, would both the front and back sections of the cylinder lose fluid? I do not see any obvious leaks around the brakes, and they work fine. I do not want to replace a master cylinder if that is not the problem. Also, how do I reset the dash brake light. Thanks for the help.



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