Tools you'll need:
* Jack and jack stands: To safely lift the vehicle. Never work under a vehicle supported only by a jack.
* Lug wrench: To remove the wheel.
* Wheel chocks: For added safety.
* Sockets and wrench: Appropriate sizes for your caliper bolts, rotor retaining bolts (if any), and lug nuts.
* C-clamp or brake caliper compression tool: To compress the caliper piston.
* Penetrating lubricant (PB Blaster or similar): To help loosen rusted bolts.
* Hammer (optional): May be needed to tap the rotor loose.
* Gloves: To protect your hands.
* Wrench to remove the caliper mounting bolts
Procedure:
1. Safety First: Park on a level surface, engage the parking brake, and chock the rear wheels. Raise the vehicle using the jack and securely support it with jack stands.
2. Remove the Wheel: Remove the lug nuts and take off the wheel.
3. Compress the Caliper Piston: You need to retract the caliper piston to create enough space for the rotor to be removed. Use a C-clamp or a dedicated brake caliper compression tool. Be careful not to damage the piston or boot. Insert a rag between the piston and the tool's jaws to protect the piston. Slowly compress the piston until there's enough clearance.
4. Remove the Caliper: Locate the bolts holding the caliper to the caliper bracket. Spray penetrating lubricant on the bolts if they're stubborn. Unscrew the bolts and carefully remove the caliper. You might need to support the caliper with a bungee cord or wire to prevent it from hanging by the brake line.
5. Remove the Rotor: Inspect the rotor for any retaining bolts or screws. Some Colorado models have these; others don't. If present, remove them. The rotor should now be free to slide off the hub. If it's stuck, gently tap it from the back with a hammer while ensuring you don't damage the hub. Use a soft-faced mallet or a block of wood between the hammer and the rotor to avoid damage.
6. Clean the Hub: Once the rotor is off, clean the wheel hub mating surface of any rust, debris, or old brake material.
7. Installation (Reverse Order): Install the new rotor (if replacing), ensuring it slides smoothly onto the hub. Reinstall the caliper, making sure it's properly seated. Tighten the caliper bolts to the manufacturer's specified torque. Reattach the wheel and tighten the lug nuts.
8. Lower the Vehicle: Carefully lower the vehicle from the jack stands. Torque the lug nuts to the specified torque.
9. Pump the Brakes: Before driving, pump the brake pedal several times to restore brake pressure.
Important Considerations:
* Brake Fluid: When compressing the caliper piston, brake fluid will be displaced. Check the brake fluid reservoir and top it off as needed. Consider using a fluid catcher to prevent spillage.
* Corrosion: If bolts are severely corroded, you may need to use a specialized tool to remove them. Avoid damaging the threads.
* Professional Help: If you're uncomfortable performing this repair yourself, take it to a qualified mechanic. Improper brake repair can be dangerous.
Remember to always refer to your vehicle's repair manual for specific torque specifications and procedures. This information is for general guidance only.
