how do you repair a leaking rear brake seal or replace them on 1994 Chevrolet Suburban 1500

I have one leaking on the drivers side rear

Asked by for the 1994 Chevrolet Suburban 1500
if its a wheel cyl repl it its pretty slf exp if you look at it. one bolt and 1 line relace and bleed and off you go
1 more answer
By brake seal do you mean wheel cyl? Or axle seal leaking rear diff. lube? Need more input.