One of the caliper is fused inside the braking bracket, which is why I had to buy at least 1 new pin.
I tried to loosen the philips screw on the other rotor (not replacing just loosen), it wouldn't come off. I'll have to take it to mechanic and have them loosen and put anti-seize on it.
I sprayed it with PB blaster, and may try to remove it again, tomorrow.
Unfortunately, the impact driver I got from Harbor Freights tools, is of low quality according to Amazon reviewers. I'll try and see if Walmart has this.
New brake pad works great. When I pushed in the brake pedal after installing them, I only needed to do so three times to get it in a "locked"/calibrated position.
Unfortunately there's squealing noise while accelerating at low speeds up to 45mph. The noise goes away immediately when I press the brake pedal, even lightly as well.
When the car is parked and off, and then turned on and starts driving again, the noise seems to come back after 3 miles of driving and making a sharp right turn.
It may be that I didn't put enough lubricant on the pad, that touches the caliper kits. Not much luck on Google search.
I'll try and re-seat them two days from now. Thanks for the assistance.
I still notice the noise though. Although it's not as annoying as before. It seemed to arise, when I made a sharp turn, left or right. There was hissing noise when I pressed on the brakes, then at another time the hissing noise was while I was moving straight.
My first set of Hawk HPS, installed by the mechanic didn't make noise, and he used the gel that came with the pad.
2nd Edit: A shim was loose on the outer pad. I discarded. On the pad with the shim still on, I removed it and placed the lubricant that came with it directly on the pads surface, and placed the shim back on. I went ahead and rubbed some pentamex brake lubricant on the caliper piston.
The same exact noise persists. I noticed it begin right after driving for 10 minutes and making a sharp left turn. Goes away immediately after pressing the brake pedal. Hard to recognize after going more than 55mph.
I inspected the caliper pins, and the clear silicone grease was gray in color. I added more, just in case.
3rd edit: The brake caliper hardware kit was most likely the culprit.
Notice the 2mm gap on the right side of the image. The 0.5mm is new one from Auto Zone:
The 2nd image has no gap with the old OEM kits:
Unfortunately I threw away the old kits, leaving me with 2 instead of 4 . The brake pad (especially the more worn out one), rattles each time I hit a bump.
Both caliper pins on the right side of the front wheel were both fused .
4th edit:
After driving 500-700 miles. I inspected the 2 17mm bolts on each of the front caliper bracket (4 total bolts). The ones on top of each caliper bracket was slightly loose, whereas the bottoms werent. Next time I lift the car up I'll be sure to put Threaded Loctite (aka Loctite blue). The youtube user Chrisfix puts THREADED loctite on all his brake jobs.
Also prior to this, I did not align the rear brake piston correctly while pushing it in clockwise, causing uneven brake wear. I have since corrected this, and hope there are no warped rotor. https://youtu.be/3kf8C4Qxu-A?t=20m32s