Jeez, I can't believe guys are still buying this junk thing. These were used on Buick Grand Nationals and I believe big Buick station wagons. The major problems with these are the accumulator (big black ball looking thing) and the switches going bad. A lot of GN guys have switched from these to vacuum brakes because of these problems. If you ever need help on these, go to
www.gnttype.org and look under the technical items. There is a lot of info there on diagnosis and repair on these.
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