Purchase a repair manual for that vehicle from your local auto parts store if you are not familiar with brake repair.
It can be easy to change the brake rotors. Lift the car, remove the tire, brake shoe and rotor, put on the new rotor, replace the brake shoe, tire and lower the car.
jack it up remove the wheel then the brake calipers then the rotors should slide off
Remove the tire and wheel from your 1994 Chevy. Remove the brake assembly. Tap on the rotors with a hammer or mallet. The rotors will slide off. Reverse the process to install the new rotors.
you most likely need to change them
A brake and rotor replacement for a Chevy Blazer typically costs between $300 and $600 depending on the number of components that need to be replaced. Generally rotors will last the life of the vehicle unless the pads have been allowed to wear excessively.
warped brake rotors, have them resurfaced.
There is a tension adjustment on the driver side just forward of the rear wheel.
Take off the tire, remove the brake caliper, and pull off the rotor.
Change front brake rotors on a 1998 Hyundai Accent?
Either warped rotors or drums can cause pulsating. Apply the parking brake slowly while going about 15mph and see if t pulsates. If it does, it is the drums that need turning. If not, it is the rotors that need turning.
First you loosen lug nuts, then jack up your blazer then pull off your tires then the rotor should slip right off, but be sure your e-brake is not on or brakes engaged in anyway.
Change the brake rotors