🔧 Sierra 1500 - Rear Brake Pads & Rotor Replacement

You’ll remove the rear wheels, swap the brake pads, and replace the rear rotors, then reassemble and pump the brake pedal to restore a firm pedal. On your Sierra 1500, the rear rotor also acts as a “drum” for the parking brake shoes inside the rotor hat, so a stuck rotor usually means the parking brake needs to be backed off.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours

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⚠️ Safety & Precautions

• 🛑 Work on level ground and chock the front wheels.
• 🛑 Release the parking brake fully before starting (the parking brake can trap the rotor).
• 🛑 Support the truck with jack stands—never rely on a floor jack alone.
• 🛑 Do not press the brake pedal with a caliper removed.
• 🛑 Brake dust is harmful—use brake cleaner, not compressed air.
• 🛑 Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• 22mm socket
• 3/8" drive ratchet
• 1/2" drive breaker bar
• 13mm socket
• 18mm socket
• Torque wrench (10-200 ft-lbs range)
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• C-clamp (6" minimum)
• Flat-blade screwdriver
• Rubber mallet
• Wire brush
• Bungee cord
• Shop rags
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear brake pad set - Qty: 1
• Rear brake rotors - Replace in pairs - Qty: 2
• Rear brake hardware kit (clips/shims) - Qty: 1
• Brake cleaner - Qty: 2 cans
• High-temp silicone brake grease - Qty: 1
• DOT 3 brake fluid - Qty: 1 bottle

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📋 Before You Begin

• Park on flat ground, shift to P, and release the parking brake.
• Place wheel chocks at the front tires.
• Crack the rear lug nuts loose with a 22mm socket and breaker bar before lifting.
• Open the hood and loosen the brake fluid cap (just set it on top). Helps the pistons compress easier.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and secure the rear

• Use a floor jack to lift the rear of the truck at a solid rear jacking point.
• Set the frame/axle securely on jack stands and gently lower the truck onto them.
• Remove the rear wheels using a 22mm socket and ratchet.

Step 2: Remove the rear caliper

• Turn the steering wheel is not needed for the rear; just position yourself for access.
• Remove the caliper slide pin bolts using a 13mm socket and ratchet.
• Lift the caliper off the bracket and support it with a bungee cord (do not let it hang by the brake hose).

Step 3: Remove the old pads and bracket

• Pull the brake pads out of the bracket by hand.
• Remove the caliper bracket bolts using an 18mm socket and breaker bar.
• Set the bracket aside.

Step 4: Remove the rotor (and back off the parking brake if stuck)

• Try to pull the rotor straight off by hand.
• If it’s stuck, tap the rotor hat with a rubber mallet while pulling outward.
• If it still won’t come off, the parking brake shoes are likely holding it:
  • Use a flat-blade screwdriver to remove the rubber access plug (if equipped) in the backing plate.
  • Inside is a star-wheel adjuster (a small toothed wheel that tightens/loosens the parking brake shoes).
  • Use a flat-blade screwdriver to rotate the star wheel to back the shoes off until the rotor slides off.

Step 5: Clean the hub and install the new rotor

• Clean the hub face with a wire brush until it’s smooth and rust-free.
• Spray the new rotor with brake cleaner and wipe with shop rags to remove packing oil.
• Install the new rotor onto the hub.

Step 6: Reinstall the bracket and hardware

• Install new pad abutment clips from the hardware kit onto the bracket (the “clips” are the stainless pieces the pad ears slide on).
• Reinstall the caliper bracket bolts using an 18mm socket.
• Torque to 129 Nm (95 ft-lbs) using a torque wrench.

Step 7: Compress the caliper piston

• Place an old brake pad against the piston face.
• Use a C-clamp to slowly push the piston fully back into the caliper.
• Watch the brake fluid reservoir under the hood; if it gets too full, use shop rags to catch overflow. Go slow to avoid mess.

Step 8: Install the new pads and reinstall the caliper

• Apply a thin layer of high-temp silicone brake grease where the pad ears touch the clips (do not get grease on pad friction material or rotor).
• Install the new inner and outer pads into the bracket by hand.
• Set the caliper over the new pads.
• Install the caliper slide pin bolts using a 13mm socket.
• Torque to 35 Nm (26 ft-lbs) using a torque wrench.

Step 9: Repeat on the other rear wheel

• Repeat Steps 2 through 8 on the other side.
• Do both sides before pumping the brake pedal.

Step 10: Reinstall wheels and torque lug nuts

• Reinstall both wheels and hand-start lug nuts.
• Lower the truck using the floor jack, remove the jack stands, then fully lower.
• Torque lug nuts in a star pattern using a torque wrench: Torque to 140 Nm (103 ft-lbs).

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✅ After Repair

• Press the brake pedal slowly 10-15 times until it feels firm. This seats the pistons to the pads.
• Check brake fluid level and top off with DOT 3 brake fluid if needed.
• Make sure the parking brake applies and releases normally.
• Test drive at low speed first, then bed-in pads: make 6-10 moderate stops from 30-35 mph, allowing a little cooling time between stops.
• Listen for grinding/scraping; recheck your work if you hear anything abnormal.

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💰 DIY vs Shop Cost

Shop Cost: $450-$850 (parts + labor)

DIY Cost: $180-$380 (parts only)

You Save: $270-$470 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-3 hours.

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🎯 Ready to get started?

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