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My right rear brake cylinder is leaking. How do I repair it?
You don't. You replace them in pairs (both sides). And due the the age of your car, be prepared for rusty brake lines (that may be problematic when reomving the cylinders) and stuck bleeder valves.
Q&A > Buick > 1992 Buick Century
Q&A > Buick > 2000 Buick Century