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I just wanted to add that those GM calipers go bad frequently and if the pads aren't adjusted tight they'll never work-in addition to everything else put out here. The parts store "rebuilt" units are hit-miss on working out of the box, get them with a lifetime warranty, or try to get new ones on ebay.



You are talking about he rear calipers with the built in E brake I assume? That would be correct. If the E brake isn't functioning properly and used regularly slack builds up between the pads and rotor causing a lower amount of braking to occur. This could very well be the issue here, along with the other ones mentioned.

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