Tools:
* Jack and jack stands: Absolutely crucial for safety. Never work under a vehicle supported only by a jack.
* Wheel chocks: To prevent the vehicle from rolling.
* Lug wrench: To remove the lug nuts.
* Socket set: You'll need sockets for the lug nuts and potentially other bolts depending on the caliper design (some Trailblazers might need a caliper bracket bolt removal). A metric socket set is essential.
* C-clamp or caliper compression tool: To compress the caliper piston. This is vital to allow the new rotor to slide onto the wheel studs. A ratchet strap can also sometimes be used as an alternative to a c-clamp.
* Torque wrench: To tighten the lug nuts and caliper bolts to the manufacturer's specified torque. This is critical to prevent damage and ensure safety.
* Wrench(es): Depending on your Trailblazer, you may need various wrenches to remove caliper bolts or caliper bracket bolts.
* Hammer (optional): May be needed to gently tap components loose if they're stuck. Use a rubber mallet if possible to avoid damaging parts.
* Penetrating oil (like PB Blaster): To help loosen any rusted or seized bolts. Apply this well in advance of working on the brakes.
* Wire brush or brake cleaner: To clean any rust or debris from the mating surfaces of the rotor and hub.
* Gloves: To keep your hands clean and protect them from grease and grime.
* Safety glasses: Essential to protect your eyes from flying debris.
Parts:
* Two rear brake rotors: Ensure you purchase the correct rotors for your specific Trailblazer model (check your VIN or parts diagram).
* Brake cleaner: Clean brake parts thoroughly.
Optional but Recommended:
* New caliper pins and boots (slide pins): These often wear and can cause sticking calipers. Replacing them ensures smooth operation and prevents future brake issues.
* Anti-seize lubricant: Applying this to the caliper pins and other threads will help prevent future seizing.
Important Notes:
* Consult a repair manual: A repair manual specific to your 2005 Trailblazer will provide detailed instructions, torque specifications, and diagrams. This is highly recommended, especially for those unfamiliar with brake work.
* Safety First: Working on brakes is crucial for safety. If you're not comfortable performing this task, take your vehicle to a qualified mechanic. Improperly installed brakes can be extremely dangerous.
* Parking Brake: Engage your parking brake before lifting the vehicle.
* Brake Fluid: Be aware that working on the brakes may require bleeding the brake system afterward. It is best to have a helper to assist in this process.
Remember to always refer to your vehicle's specific repair manual for detailed instructions and torque specifications. This information is for general guidance only.
