^^ caliper is probably seized. You are doing everything right. I even have the actual "Snap-on " Caliper tool made for it and my piston wouldnt budge. Drove it back to my apt and the rear piston locked up on the old rotor and actually cracked the rotor....You can get these Calipers from just abt any junk yard for about $15 or buy a new one from advance for abt $50, just don't wait till you get stranded on the side of the road like me
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