Hi,im having trouble getting the 2 bolts out on the calipers. they wont budge. ty.

Hit them with some kroil let em sit a few minutes nice tight socket 1/2 inch drive and a couple firm smacks with a hammer

Secure some wd40 or similar-spray it let soak-do u hav a extension bar(torque) put some gloves on and keep tryin-take it slow-dont hurt your face or other-u may want to wrap on it with a ball peen-some boltz r so hard they need a torch

There are many steps of varying levels of desperation involved with removing brake component bolts. As you go down the list, your more and more at risk of damaging something.

1. Penetrating Oil. If you can somehow get this to sit in a pool around the bolt, it will slowly work its way in.
2. 1/2 inch drive breaker bar. This is a solid, non ratcheting bar that often comes with 1/2 inch ratchet sets. It is longer than the ratchet, so you can get more torque on the bolt to loosen it.
3. Workspace. See if you can improve your work space by jacking the vehicle to get more room in the wheel well, or by removing the piece your working on and placing it in a vice to get better leverage.
4. Heat. Using a blowtorch or tiger torch, you can heat the area the bolt is threaded into. This will loosen the bolt slight, but is NOT HIGHLY RECOMMENDED for brakes as you can easily damage brake lines with heat.
5. Impact. Again, not highly recommended for brakes as hitting the wrong part could put you and your families lives at risk. However, sometimes an impact to the mating area between the bolt and the caliper will loosen the bolt.

When you get the caliper off, be sure to NOT hang it by the brake lines. This can cause hairline fractures in the brake lines that will result in brake line failure. Instead, hang it by a piece of wire or string, off part of the suspension.