🔧 Front Brake Pads and Rotors - Replacement

The front pads and rotors on your Sierra should be replaced as a set to restore braking performance and prevent noise, pulsation, and uneven wear. Since this truck uses front disc brakes, you will remove the caliper, support it safely, swap the rotor, and install the new pads with fresh hardware if included.

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

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⚠️ Safety & Precautions

• Work on a level surface and chock the rear wheels before lifting the front.
• Support the truck with jack stands; never rely on the jack alone.
• Do not let the brake caliper hang by the hose.
• Brake dust may be present. Wear safety glasses and gloves.
• If your truck has an ABS warning light after service, a scan check may be needed.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated for truck weight)
• Wheel chocks
• Safety glasses
• Mechanic gloves
• 19mm socket
• 21mm socket
• 18mm socket
• Ratchet
• Breaker bar
• Torque wrench
• Bungee cord or brake caliper hanger
• C-clamp
• Flat-blade screwdriver
• Wire brush
• Brake cleaner
• Shop rags

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front brake pad set - Qty: 1
• Front brake rotor - Replace in pairs - Qty: 2
• Front brake hardware kit - Qty: 1
• Brake caliper guide pin grease - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Put the transmission in Park.
• Chock the rear wheels before lifting the front.
• Loosen the front wheel lug nuts before raising the truck.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the front wheels

• Use a 21mm socket and breaker bar to loosen the front lug nuts about one turn each.
• Do not remove them yet.

Step 2: Raise and support the truck

• Use a floor jack to lift the front of the truck at the proper front lift point.
• Place jack stands under both sides of the front frame and lower the truck onto them.
• Remove the front wheels with the 21mm socket.

Step 3: Remove the caliper

• Use an 18mm socket to remove the caliper mounting bolts.
• Lift the caliper off the rotor.
• Hang the caliper with a bungee cord so the brake hose is not stretched.
• Never let the caliper dangle.

Step 4: Remove the old pads

• Slide the old brake pads out of the bracket.
• Remove the pad clips and hardware if they are being replaced.

Step 5: Remove the caliper bracket

• Use a 21mm socket to remove the caliper bracket bolts.
• Remove the bracket from the steering knuckle.

Step 6: Remove the rotor

• Pull the rotor straight off the hub.
• If it is stuck, use a flat-blade screwdriver through the access hole to back off tension if needed, then tap the rotor hat lightly.
• Clean the hub face with a wire brush and brake cleaner.

Step 7: Install the new rotor

• Spray the new rotor with brake cleaner and wipe it dry to remove packing oil.
• Install the rotor on the hub.
• Keep the hub face clean.

Step 8: Reinstall the caliper bracket

• Install the caliper bracket and tighten the bolts with a 21mm socket.
• Torque to 175 Nm (129 ft-lbs).

Step 9: Compress the caliper piston

• Use a C-clamp to slowly push the caliper piston back into the bore.
• Do this before installing the new pads so the caliper will fit over them.
• Watch the brake fluid level in the master cylinder reservoir.

Step 10: Install the new pads and hardware

• Install the new pad clips and hardware in the caliper bracket if included.
• Apply a thin layer of brake caliper guide pin grease to the pad contact points and guide pins, if needed.
• Install the new front brake pads in the bracket.

Step 11: Reinstall the caliper

• Slide the caliper over the new pads and rotor.
• Install the caliper bolts with an 18mm socket.
• Torque to 115 Nm (85 ft-lbs).

Step 12: Reinstall the wheel

• Put the wheel back on and snug the lug nuts by hand.
• Lower the truck to the ground.
• Use a 21mm socket and torque wrench to tighten the lug nuts in a star pattern.
• Torque to 190 Nm (140 ft-lbs).

Step 13: Repeat on the other side

• Replace the front brakes and rotors on the opposite side using the same steps.
• Front brake parts should always be replaced in pairs.

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✅ After Repair

• Before moving the truck, pump the brake pedal several times until it feels firm.
• Check the brake fluid level and top off if needed.
• Test brake operation at low speed in a safe area.
• Expect a short break-in period for new pads and rotors.

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💰 DIY vs Shop Cost

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

DIY Cost: $180-$350 (parts only)

You Save: $270-$500 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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