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On my 2003 avalanche the rear brake caliper bolts were pretty tight I got them broke loose with a breaker bar... Ok... But now they just spin easily in either direction but will not come out ??? I even clamped a large vicegrip on them and tapped outward with a hammer and they refuse to exit the hole but they spin easily ??? what is up with that ??? the front ones ( T-55 Torx ) just reversed out like any normal bolt in any hole ?

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ARE YOU USING A OPEN END WRENCH TO HOLD THE CALIPER SLIDE PIN FROM TURNING WHEN LOOSEN THE CALIPER OUT SIDE BOLT.

Posted on Jul 10, 2010

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Do you mean to say your piston on your caliper is locked up?
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I have a 2003 chevy avalanche, and i need to replace my rear brakes and need step by step instruction. I am not a mechanic but know a little. Please thank you


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1 Answer

How do i remove brake caliper on a chevy avalanche in order to replace brake pads


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1 Answer

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Just did this tonight... 7/21/08

You need a torx head T-55 Star Socket to remove the caliper bolt(s) and a large 3/4 in preferably with a 1/2 dr and large breaker bar or torque wrench with a 1/2 in dr. to remove the knuckle bolts. I should've taken pictures, but I did not. After studying this exact issue for an hour or so, I finally got everything to click. Steps as I proceeded. Loosen the top caliper nut using the T-55 torx bit, this will take some doing, if possible, use a breaker bar or something comparable, I used a standard 3/8 in. socket wrench and about a foot long hollow metal tube on the end as the breaker and after some muscle work (ouch!!) got it loose. Now there are 2 bolts that hold the caliper in place that need to come out. I used a 3/4 in socket on a 1/2 breaker bar to get these to break. I don't have the exact torque specs to put these back on, but I went about 40lbs on the knuckle bolts and closer to 80lbs on the caliper torx head screw. Once you have the caliper torx head bolt loose and the other 2 nuts off, you can rotate the caliper. Using a C-Clamp, compress the caliper so that it is completely compressed. Now, remove the torx head bolt and the pad assembly will swing out, at this point, you can remove the old pads and clips if you are replacing them as well. Reverse the order for installation using Lock-tite and the caliper grease you get from the parts store. I hope I don't have to mention removing the tires, using jack stands and being completely safe under there. Good Luck. The first side took me about 3 hours considering time and studying, the second side took about half an hour after already knowing what to do.. It gets easier each time you do it.

So far, I have replaced 2 fuel pumps (at home) first one took about 7 hours, second time around, only took about 2 hours. Front and Rear brake jobs. numerous small items, now I'm looking at a blinker switch (problem with left turn signal... rapid click, no light).. Also, the dash panel either needs repaired or replaced as the fuel gage is constantly up and down. If you or someone else has a suggestion here, I would appreciate it.

Thanks and remember... Practice Safe "Do it yourself"..!

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