Typical on the older Blazers, the front brake rotors are rust welded to the hub. Mine has 118K on it, so a lot of corrosion from years of salt exposure in winter.

Some have said beat it severely with a big hammer, not a good solution as you are transferring that impact to you ball joints and your front hub bearings.

May work, but not a very good idea.

If your pads are worn down, and your rotors are stuck, just opt to put new rotors on as well, your pads will last much longer anyway. Most parts stores such as Advance, Auto Zone, O'Reiley's, etc., will loan you tools if you are buying parts.

You need a three jaw, 10 ton gear puller wide enough to span the rotor diameter. There is a reason why your axle stub has a recess formed into it, it is for using a puller on the rotors.

Clean off as much rust as possible around the hub and soak it down several times with PB Blaster, Liquid Wrench, etc, and let it sit a while.

Install the puller and crank it down with a breaker bar. Make sure you feet and legs are not in front of it. Once you get enough tension on it, that sucker will pop right off out on the floor. Took me about two minutes to pull each rotor after they had soaked.

When reinstalling, clean the hub well, and apply some never seize around the area on the hub and studs where they tend to stick.

 

Hammer is much funner