Replacing the brakes on your Kia Sedona yourself will save potentially hundreds of dollars that would otherwise go to a mechanic. If you can change a tire and feel reasonably comfortable removing bolts and operating a C-clamp, then replacing your own brakes should not be too difficult.
Put the van in gear and engage the emergency brake.
Jack the vehicle up to remove the wheel in front of the first brake you want to replace.
Loosen the lug nuts and remove the wheel.
Remove the spring clips that hold retainer pins with pliers.
Remove the caliper bolts with a socket wrench.
Use a short bungee cord to hook the caliper up on the spring, making sure not to stretch or damage the brake line.
Slide the old pad out.
Apply Anti-Squeak spray to the back of the new pad and slide it into the caliper.
Put the caliper back on and bolt down.
Place an old pad over the two caliper pistons, and using a C-clamp, tighten the pistons down until they are completely in.
Press down the brake pedal with your hand from outside of the van. Continue to pump the brakes until you feel solid pressure.
Put the wheel back on.