Here's a general procedure. Consult a repair manual specific to your year and model Suburban for detailed diagrams and torque specifications. Variations may exist depending on specific options and brake system configuration.
1. Safety First:
* Park on a level surface, engage the parking brake firmly.
* Use jack stands to securely support the vehicle after lifting it with a jack. Never work under a vehicle supported only by a jack.
* Wear safety glasses to protect your eyes from flying debris.
* Use gloves to protect your hands.
2. Preparation:
* Locate the wheel you're working on.
* Remove the wheel. This usually involves loosening the lug nuts slightly while the wheel is still on the ground, then lifting the vehicle and removing the lug nuts completely. Keep the lug nuts together in a safe place.
3. Brake Caliper Removal:
* Depending on your caliper design, you'll either use a C-clamp or a caliper compression tool to push the piston back into the caliper. This is crucial to create space for the rotor to slide off. Be careful not to damage the piston or seals. Some calipers have a bleeder screw you can open slightly to make this easier. The fluid will likely leak out slightly. Have a container ready.
* Once the piston is compressed, you may need to remove the caliper mounting bolts. These bolts usually are accessible from behind the caliper. Carefully remove the bolts and support the caliper with a bungee cord or wire to prevent it from hanging by the brake line.
4. Rotor Removal:
* Inspect the rotor. There are often small mounting pins or screws (sometimes hidden under dust caps) holding the rotor to the hub. Remove these.
* The rotor should now slide off the wheel studs. It might be tight due to rust or corrosion. A light tap with a rubber mallet around the circumference might be necessary. Avoid hitting the wheel studs.
5. Reassembly:
* Clean the hub and mating surface of the rotor thoroughly. Any rust or debris will interfere with proper braking.
* Install the new rotor.
* Reinstall the caliper.
* Bleed the brakes if you opened the bleeder valve.
* Tighten all bolts to the manufacturer's specified torque. Failure to do so can lead to brake failure.
* Replace the wheel and tighten the lug nuts to the proper torque.
* Lower the vehicle.
* Test the brakes carefully before driving.
Important Considerations for a 3/4 Ton Suburban:
* Weight: These rotors are heavy. Be careful not to drop them on your feet or other body parts.
* Size: They are large in diameter. You might need extra leverage for certain steps.
* Rust: Due to the age and potential for exposure, rust might be more of an issue. Penetrating oil may help loosen things.
Disclaimer: This is general information. Always consult a repair manual specific to your 1998 Chevrolet Suburban 3/4 ton for detailed instructions and safety precautions. If you are uncomfortable performing this repair, take it to a qualified mechanic. Improper brake repair can be dangerous.
