This is my first time changing brake pads and rotors. I have a 2009 chevy suburban. I took off the caliper mounting bracket (I'm changing the front brakes), and the upper slide pin moves, but the lower is seized. I tried turning it with a wrench, but it still wouldn't move. How can I get it out? Should I use a breaker bar and twist it? Since it is seized, do I have to replace just the pin if I can get it out, or the whole mounting bracket? The inner brake pad has worn much more than the outer. The other side of the car didn't have any seized caliper pins, but the inner brake pad was a little more worn than the other. What parts should I replace other than the pads and rotors that I am already replacing?

 

Rock Auto has reman caliper brackets and parts. If you can get the pin out clean it up and lube with the proper silicone pin grease. If not order the reman caliper bracket assy.

 

Would this grease work? https://www.napaonline.com/en/p/SL_S...ressionRank=18
The guy at Napa said it would.

 

Why are you changing the rotors?

 

I am changing the rotors because they are very old, and rusty, and the brake pedal sometimes pulsates.
Anyways, I was able to get the pin out. I sprayed some WD-40 on it, then put a wrench on it, and hit the wrench with a mallet until it started turning. Then I put a breaker bar on it with a wrench levering the pin to push it out. I turned it back and forth a bunch and was able to get it out. It looked like this.

 

Your pulsing brake pedal may be due to warped rotor which would be easy to check while you got the wheels off. The rotors will normally be rusty everywhere that the brake pad itself doesn't touch.

 

Replace the pin or clean it up real good with wire wheel, try to clean the bore well too. And lube the pin real well with brake grease; if it doesn't slide readily, time to purchase new.