To remove the caliper and swap brakes, we must loosen (2) 15mm bolts. They are located at the top and bottom of the caliper, towards the front of the vehicle. Left side on Driver side, Right side on passenger if the front is too confusing

. This bolt needs to be held in place both when you loosen and later tighten it. You'll need a 15mm socket, and a 15mm wrench or vise-grip, pipe pliers or other tool to secure the bolt.
Pic of the lower bolt
This is how you should secure the bolt
And repeat on top bolt
Now wiggle the caliper back forth, loosening it's grip on the pads. Some like to open the brake fluid drain, but that brings air into your system, and will require flushing the brake fluid. Don't be a wimp, and just push back and forth, use a pry or other tool to help spread the caliper if needed, and then slide off the caliper. The caliper will slide to the front of the vehicle, but don't let it hang, as it may tear, or damage your brake line.
No remove the brake pads by sliding them out .
Your wheel should look like this now.
