🔧 Sierra 1500 - Rear Brake Pads & Rotors Replacement

You’ll be replacing the rear brake pads and rotors on your Sierra 1500 to restore braking performance and stop any grinding or vibration. This involves removing the rear wheels, calipers, pads, and rotors, then installing new parts and re-torquing everything correctly.

Difficulty Level: Beginner-Intermediate | Estimated Time: 2–3 hours

---

⚠️ Safety & Precautions

• ⚠️ Always support the truck with jack stands; never rely on the floor jack alone.
• ⚠️ Work on solid, level ground and chock the front wheels so the truck cannot roll.
• ⚠️ Brakes and rotors can get very hot; only work when they are completely cool.
• ⚠️ Brake dust is harmful; avoid blowing it with air. Use brake cleaner and a rag instead.
• ⚠️ Do not press the brake pedal with a caliper removed; it can push the piston out.
• ⚠️ Keep brake fluid off paint; it can damage painted surfaces.
• ⚠️ This truck uses a cable parking brake at the rear. Make sure the parking brake is fully released before removing rotors.
• ⚠️ You do not need to disconnect the battery for this job.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 🔧 Floor jack (3-ton rated minimum)
• 🔧 Jack stands (3-ton rated, Qty: 2–4)
• 🔧 Wheel chocks
• 🔧 22mm socket
• 🔧 1/2" drive breaker bar
• 🔧 1/2" drive torque wrench (up to 200 ft-lbs)
• 🔧 3/8" drive ratchet
• 🔧 13mm socket
• 🔧 18mm socket
• 🔧 Torx T30 screwdriver
• 🔧 C-clamp (6" or larger)
• 🔧 Brake caliper piston compression tool (specialty)
• 🔧 Flathead screwdriver (medium)
• 🔧 Wire brush (small)
• 🔧 Shop rags
• 🔧 Bungee cord
• 🔧 Rubber or nitrile gloves
• 🔧 Safety glasses
• 🔧 Penetrating oil spray
• 🔧 Brake parts cleaner spray
• 🔧 Torque wrench for low torque (up to 40 ft-lbs)
• 🔧 Wire brush drill attachment (optional)
• 🔧 Plastic or brass hammer
• 🔧 Small pick tool

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• 🔩 Rear brake pad set - Qty: 1 (services both rear wheels, replace in pairs)
• 🔩 Rear brake rotors - Qty: 2 (replace in pairs)
• 🔩 Rear brake hardware kit (pad clips / abutment shims) - Qty: 1
• 🔩 Brake lubricant (high-temp silicone brake grease) - Qty: 1 tube
• 🔩 Brake cleaner - Qty: 2 cans
• 🔩 Anti-seize compound - Qty: 1 small tube
• 🔩 Caliper guide pin boots (optional if cracked) - Qty: 1 set
• 🔩 New caliper bracket bolts (optional, single-use recommended) - Qty: 4
• 🔩 Rotor retaining screws (Torx T30, if equipped) - Qty: 2

---

📋 Before You Begin

• Park your Sierra on flat, solid ground. Put the transmission in PARK.
• Fully release the parking brake so the rear rotors are not clamped by the parking brake shoes.
• Loosen the rear wheel lug nuts 1/2 turn with a 22mm socket while the truck is on the ground.
• Place wheel chocks in front of and behind at least one front wheel.
• Lift the rear of the truck using the floor jack under the rear axle tube, then support both sides with jack stands under the axle or frame.
• Make sure the truck is stable before removing any wheels. Push gently to confirm stability.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove rear wheels

• Use the floor jack to raise the rear until both rear wheels are off the ground, then rest the truck securely on jack stands.
• Use a 22mm socket and breaker bar to remove all rear wheel lug nuts.
• Remove both rear wheels and set them aside.

Step 2: Inspect and locate rear brake components

• Identify the rear brake caliper (clamps the rotor) and the caliper bracket (larger metal piece the caliper bolts to).
• Note the rubber brake hose going into the caliper; you will not disconnect this.
• Look for any Torx screw holding the rotor to the hub. If present, it is usually a Torx T30.

Step 3: Remove caliper slide pin bolts

• On the back of the caliper, locate the two smaller slide pin bolts (top and bottom).
• Use a 13mm socket and 3/8" ratchet to loosen and remove both slide pin bolts.
• Carefully pull the caliper off the bracket. If it is stuck, gently pry with a flathead screwdriver between the pad and rotor.
• Support the caliper with a bungee cord hung from the suspension so it does not hang by the brake hose.

Step 4: Remove old brake pads and hardware

• Slide the old brake pads out of the caliper bracket by hand.
• Remove the metal pad clips (hardware) from the caliper bracket using a flathead screwdriver if needed.
• Use a wire brush to clean the pad contact areas on the caliper bracket where the clips sit.
• Clean metal surfaces until shiny for smooth pad movement.

Step 5: Remove caliper bracket

• Locate the two large caliper bracket bolts at the back of the bracket.
• Use an 18mm socket and breaker bar to loosen and remove both bracket bolts.
• Remove the caliper bracket from the rotor and set it on a clean surface.
• Torque spec on reassembly: 170 Nm (125 ft-lbs) for caliper bracket bolts.

Step 6: Remove the rotor

• If your rotor has a retaining screw, use a Torx T30 screwdriver to remove it.
• Spray the rotor-to-hub area with penetrating oil spray.
• Tap the rotor hat (center area) firmly with a plastic or brass hammer around the circumference to break it free.
• Slide the rotor off the hub. If it hangs up, check that the parking brake is fully released.

Step 7: Clean hub and prepare new rotor

• Use a wire brush or wire brush drill attachment to remove rust from the wheel hub face.
• Wipe the hub face with a shop rag and brake cleaner until clean and dry.
• Apply a very thin film of anti-seize compound to the hub face to prevent rotor sticking in the future.
• Spray the new rotors (both sides) with brake cleaner to remove protective oil and wipe dry with shop rags.

Step 8: Install new rotor

• Slide the new rotor onto the hub and push it fully seated.
• If equipped with a rotor retaining screw, install it using the Torx T30 screwdriver and snug it. Torque to 10 Nm (7 ft-lbs) if you have a small torque wrench.
• Use one lug nut with a 22mm socket to lightly hold the rotor against the hub while you work (finger tight, then just snug).

Step 9: Service caliper bracket and guide pins

• On the caliper bracket, pull out both guide pins by hand or using a small pick tool if needed.
• Wipe old grease and dirt off the pins with shop rags and brake cleaner.
• Inspect rubber boots; if torn, replace them.
• Apply a thin coat of brake lubricant to each guide pin and slide them back into the boots until they move smoothly. Pins should slide easily, not stick.

Step 10: Reinstall caliper bracket

• Position the caliper bracket over the new rotor and align it with the mounting holes.
• Install the two large bracket bolts by hand first.
• Use an 18mm socket and 3/8" or 1/2" ratchet to snug them, then use a torque wrench to tighten.
• Torque caliper bracket bolts to 170 Nm (125 ft-lbs) with the torque wrench.

Step 11: Install new hardware and pads

• Clip the new pad hardware (metal clips) into the caliper bracket by hand. Make sure they are fully seated.
• Apply a thin film of brake lubricant on the pad contact surfaces of the clips where the pads will slide (do not get grease on pad friction material or rotor).
• Install the new inner and outer brake pads into the bracket. The pad with the wear indicator (if present) usually goes on the inside.

Step 12: Compress the caliper piston

• Place the old inner brake pad against the caliper piston surface.
• Use a C-clamp or brake caliper piston compression tool to slowly press the piston back into the caliper bore until it is fully seated.
• Watch the brake fluid reservoir under the hood as you compress the piston. If it gets too full, remove some fluid with a clean rag or suitable tool to avoid overflow.
• Compress slowly to avoid damaging seals.

Step 13: Reinstall caliper over new pads

• Position the caliper over the new pads and onto the bracket.
• Align the caliper slide pin bolt holes.
• Install the two 13mm slide pin bolts by hand to avoid cross-threading.
• Use a 13mm socket and 3/8" ratchet to snug, then tighten with a torque wrench.
• Torque caliper slide pin bolts to 30 Nm (22 ft-lbs).

Step 14: Repeat on the other rear side

• Repeat Steps 3–13 on the other rear wheel.
• Always replace pads and rotors on both sides of the axle for even braking.

Step 15: Reinstall wheels and lower the truck

• Remove any temporary lug nut holding the rotor using a 22mm socket.
• Install each rear wheel onto the hub and hand-thread all lug nuts.
• Use a 22mm socket and ratchet to snug the lug nuts in a star pattern.
• Use the floor jack to lift the truck slightly, remove the jack stands, then lower the truck to the ground.
• Use a torque wrench and 22mm socket to torque all lug nuts in a star pattern.
• Torque wheel lug nuts to 190 Nm (140 ft-lbs).

Step 16: Pump the brake pedal and check fluid

• Before driving, sit in the driver’s seat and slowly press the brake pedal several times until it feels firm. This seats the pads against the rotors.
• Check the brake fluid level in the reservoir. Adjust to the “MAX” line if needed.
• Inspect around both rear calipers and hoses for any leaks or loose parts.

---

✅ After Repair

• Start the engine and press the brake pedal again; it should feel firm and consistent.
• With the truck in gear and a safe open area, perform a low-speed test (10–20 km/h / 5–15 mph) to ensure the brakes work smoothly without pulling or noise.
• Re-engage and release the parking brake a few times to confirm it operates correctly with the new rotors.
• For the first 300–500 km (200–300 miles), avoid very hard stops to allow pads and rotors to bed in. Use smooth, moderate stops.
• After a short drive, recheck lug nut torque and look again for leaks or unusual heat or smell from the rear brakes.

---

💰 DIY vs Shop Cost

Shop Cost: $450–$700 (parts + labor) for rear pads and rotors on a Sierra 1500.

DIY Cost: $200–$350 (parts only), depending on rotor and pad quality.

You Save: $250–$350 by doing it yourself!

Shop labor rates typically run $100–$150/hour. This repair takes a shop about 1.5–2.0 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections above to add everything to your cart.