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Replacing rear brake pads on a 2007 chevrolet uplander and cannot get the piston to move back in to install new pads over rotor

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Hey; If the piston is seized, simply go to your local parts dealer, (or the dealership for lack of options--you'll pay triple what you will at a parts dealer) and buy a new caliper. They are now sold as a complete unit. Previously they were sold without the mounting bracket. The pad clips and brake line copper washers are usually included but check, and buy these if not included, you will need them. Cost in CDN currency is about 85.00 to 100.00, and you will save by giving them the old caliper 20 bucks oor so. They are quite simple to install two bolts from the mounting bracket at the vehicle mount, and removing/replacong the brake line. After installation and checking tightness of all bolts and the b/line. bleed the brakes 5-7 times each wheel i this order. 1-right rear; 2-left front; 3-left rear; 4-right front. Its a process, but worth doing. I always bleed all wheels even after working on only one area....better safe than sorry. Good luck. ;)

Posted on Oct 11, 2011

  • Steve Burley Oct 11, 2011

    Before you run off to the "Parts Guy" let's be sure you did the plunger repositioning correctly. (I dont know how much of a mechanic you are, so no disrespect intended here). When you had the wheel off the car and you were attempting to squeeze the plunger/piston back into the housing, was the brake line ON or OFF the caliper. Second, if the brake line was ON the caliper, did you have the brake fluid reservoir cap OFF while you were squeezing?? You need to have either the reservoir cap OFF, or the brake line removed from the caliper while you are trying to move the plunger. Sorry in the previous post I assumed that you knew about those two points, and just wanted to clarify. So if they were both on then you should give it another try but with (probably best and certainly the easiest) the reservoir cap removed. GL :D

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