🔧 Sierra 1500 - Rear Brake Pads & Rotor Replacement

You’ll remove the rear wheels, unbolt the rear brake calipers, swap the pads and rotors, then reassemble with correct torque. This restores braking performance and prevents noise/vibration from worn pads or warped rotors.

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

---

⚠️ Safety & Precautions

• 🛑 Support your Sierra 1500 with jack stands; never rely on a jack alone.
• 🔥 Brakes can be hot—let them cool before touching rotors/calipers.
• 🧤 Do not breathe brake dust; use brake cleaner and avoid compressed air.
• 🧷 Do not let the caliper hang by the brake hose—support it with a bungee cord.
• ⚡ Your Sierra 1500 is mild-hybrid; you’re not servicing high-voltage parts here, but avoid disturbing any orange high-voltage wiring.
• 🔒 Make sure the parking brake is fully released before rotor removal.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• 22mm socket
• 13mm socket
• 18mm socket
• 18mm wrench
• Breaker bar (1/2" drive)
• Torque wrench (1/2" drive, up to 150 ft-lbs)
• Torque wrench (3/8" drive, inch-lb/low ft-lb range)
• 3/8" ratchet
• 1/2" ratchet
• C-clamp brake piston compressor
• Flathead screwdriver
• Dead blow hammer
• Bungee cord
• Wire brush
• Brake cleaner spray
• High-temp silicone brake grease
• Safety glasses
• Nitrile gloves

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear brake pad set - Qty: 1
• Rear brake rotors - Qty: 2
• Rear brake hardware kit (clips/abutments) - Qty: 1
• Brake cleaner - Qty: 1
• High-temp silicone brake grease - Qty: 1

---

📋 Before You Begin

• Park on level ground, put the transmission in P, and chock the front wheels with wheel chocks.
• Confirm the parking brake is released (this truck uses a drum-in-hat parking brake inside the rear rotor).
• Loosen rear lug nuts 1/2 turn with a 22mm socket and breaker bar before lifting.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and secure the rear

• Use a floor jack (rated 3-ton minimum) to lift the rear, then set the axle/frame securely on jack stands (rated 3-ton minimum).
• Remove the rear wheels using a 22mm socket and 1/2" ratchet.

Step 2: Remove the caliper (do not stretch the hose)

• Turn the steering wheel is not needed for rear brakes; just position yourself for access.
• Remove the two rear caliper slide/guide bolts using a 13mm socket while holding the slide pin flats with an 18mm wrench.
• Lift the caliper off the bracket and hang it with a bungee cord.
• If it’s stuck, wiggle—don’t pry the hose.

Step 3: Remove pads and hardware

• Pull the old pads out of the bracket by hand. Use a flathead screwdriver gently if they’re tight.
• Remove the stainless pad clips/abutments from the bracket using a flathead screwdriver.

Step 4: Remove the caliper bracket

• Remove the two caliper bracket bolts using an 18mm socket with a breaker bar (1/2" drive).
• Set the bracket aside.

Step 5: Remove the rotor (parking brake inside rotor)

• Pull the rotor straight off the hub by hand.
• If the rotor is stuck, tap the rotor “hat” area with a dead blow hammer to break rust loose.
• If it still won’t come off, the parking brake shoes may be holding it. Use a flathead screwdriver to back off the star wheel adjuster (a small toothed adjuster inside the access slot behind/near the rotor area) until the rotor frees up.

Step 6: Clean and prep the hub and bracket

• Use a wire brush to clean rust from the hub face (where the rotor sits flat).
• Spray the bracket and surrounding area with brake cleaner spray (avoid direct spray into rubber boots).

Step 7: Install the new rotor

• Clean the new rotor with brake cleaner spray to remove packing oil.
• Place the rotor onto the hub.
• Temporarily hold it in place by threading on 1-2 lug nuts by hand (use the 22mm socket to snug lightly).

Step 8: Reinstall the caliper bracket

• Position the bracket over the rotor and start both bolts by hand.
• Tighten with an 18mm socket and 1/2" ratchet, then final-tighten with a torque wrench (1/2" drive).
• Torque to 170 Nm (125 ft-lbs)

Step 9: Install new hardware and pads

• Snap the new pad clips/abutments into the bracket by hand (use a flathead screwdriver if needed).
• Apply a thin film of high-temp silicone brake grease where the pad “ears” slide on the clips.
• Install the new pads into the bracket.
• Grease slides only—never pad friction material.

Step 10: Compress the caliper piston

• Place an old pad against the piston face, then use a C-clamp brake piston compressor to slowly push the piston fully back into the caliper.
• Go slowly and keep it straight so the piston doesn’t bind.

Step 11: Reinstall caliper and torque the slide bolts

• Set the caliper over the new pads.
• Install the slide/guide bolts using a 13mm socket while holding the pin flats with an 18mm wrench.
• Final-tighten with a torque wrench (3/8" drive).
• Torque to 38 Nm (28 ft-lbs)

Step 12: Reinstall wheels and torque lug nuts

• Reinstall the wheels and hand-thread all lug nuts.
• Lower the truck off the jack stands using the floor jack.
• Torque lug nuts in a star pattern using a torque wrench (1/2" drive) and 22mm socket.
• Torque to 190 Nm (140 ft-lbs)

Step 13: Repeat on the other rear side

• Repeat Steps 2–12 on the other rear wheel.
• Do one side at a time for reference.

---

✅ After Repair

• Before driving, pump the brake pedal slowly 10–15 times until it feels firm (this seats the pistons against the new pads).
• Check brake fluid level and top off only if needed (do not overfill).
• Test in a safe area: roll at low speed and brake gently to confirm normal operation.
• Pad break-in: make 8–10 moderate stops from ~30 mph to 5 mph, with cool-down time between stops (avoid hard panic stops for the first ~200 miles).
• Re-check for leaks, unusual noises, and that lug nuts remain properly torqued.

---

💰 DIY vs Shop Cost

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

DIY Cost: $180-$420 (parts only)

You Save: $270-$430 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-3 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 below to add everything to your cart.