🔧 Front Wheel Bearing Hub Assembly - Replacement

On your Sierra, the front wheel bearing is serviced as a complete hub assembly. That means you replace the bearing and hub together, which is simpler than pressing a bearing in and out.

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

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⚠️ Safety & Precautions

• Support the vehicle securely on jack stands before removing the wheel.
• Do not let the brake caliper hang by the hose.
• If equipped with ABS, handle the wheel speed sensor wire carefully.
• Use caution around rusted fasteners; penetrating oil helps.
• No battery disconnect is normally required for this repair.

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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 vehicle weight)
• Wheel chocks
• 19mm lug wrench or socket
• 15mm socket
• 18mm socket
• 21mm socket
• 36mm socket
• Ratchet
• Breaker bar
• Torque wrench
• Flat blade screwdriver
• Trim tool
• Hammer
• Penetrating oil
• Safety glasses
• Mechanic gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front wheel hub and bearing assembly - Qty: 1 per side
• New hub bolts - Qty: 3 per side
• Wheel speed sensor retaining clip - Qty: 1 if damaged

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📋 Before You Begin

• Park on level ground.
• Set the parking brake.
• Chock the rear wheels.
• Loosen the lug nuts before lifting the truck.
• Spray rusty fasteners first.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the wheel

• Use a 19mm lug wrench or socket to crack loose the lug nuts on the wheel you are servicing.
• Do not remove them yet.

Step 2: Raise and support the truck

• Use a floor jack (rated 3-ton minimum) to lift the front of the truck.
• Place jack stands (rated for vehicle weight) under the frame and lower the truck onto them.
• Remove the wheel with the 19mm lug wrench or socket.

Step 3: Remove the brake caliper and bracket

• Use a 15mm socket to remove the caliper guide pins.
• Remove the caliper and hang it with wire or a hook. Never let it hang by the hose.
• Use an 18mm socket to remove the caliper bracket bolts.
• Lift off the bracket and set it aside.

Step 4: Remove the rotor

• Pull the brake rotor straight off the hub.
• If it is stuck, tap it gently with a hammer and use a flat blade screwdriver if needed.

Step 5: Disconnect the ABS sensor wire

• Use a trim tool or flat blade screwdriver to release the wheel speed sensor wire clips.
• Unplug the sensor connector if needed so the harness can move freely.

Step 6: Remove the axle nut

• Use a 36mm socket and breaker bar to remove the axle nut.
• If the axle turns, have an assistant hold the brake or use the parking brake carefully.

Step 7: Remove the hub bolts

• From the back of the knuckle, use a 21mm socket to remove the three hub bolts.
• Penetrating oil helps a lot here.

Step 8: Remove the hub assembly

• Pull the hub assembly straight out of the knuckle.
• If it is stuck, tap around the flange with a hammer from the rear side.
• Clean the hub mounting surface on the knuckle.

Step 9: Install the new hub assembly

• Slide the new hub bearing assembly into place.
• Install the three hub bolts by hand first with a 21mm socket.
• Tighten the hub bolts to 140 Nm (103 ft-lbs).

Step 10: Reinstall the axle nut

• Install a new axle nut by hand.
• Use a 36mm socket and torque wrench to tighten it to 325 Nm (240 ft-lbs).

Step 11: Reinstall the brake parts

• Reinstall the rotor.
• Install the caliper bracket with an 18mm socket.
• Tighten the caliper bracket bolts to 230 Nm (170 ft-lbs).
• Reinstall the caliper with a 15mm socket.
• Tighten the caliper guide pins to 31 Nm (23 ft-lbs).

Step 12: Reconnect ABS wiring and finish up

• Reattach the wheel speed sensor wire clips.
• Install the wheel and hand-tighten the lug nuts with a 19mm lug wrench or socket.
• Lower the truck and torque the lug nuts to 190 Nm (140 ft-lbs) in a star pattern.

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✅ After Repair

• Pump the brake pedal until it feels firm before moving the truck.
• Check for ABS warning lights.
• Road test at low speed and listen for noise.
• Recheck lug nut torque after the test drive.

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💰 DIY vs Shop Cost

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

DIY Cost: $120-$260 (parts only)

You Save: $280-$590 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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