highModerate 1–2 hours per corner (shop) Community experience922 views
Source: Widely reported by owners. Not a GM statement. Confirm with a qualified technician.
When to stop driving
Stop driving if you hear grinding, feel looseness in the steering, or the wheel has noticeable play. A failed hub can let the wheel separate.
Symptoms
- Humming or growling that increases with speed
- Noise changes when turning left or right
- Vibration in the steering wheel or floor
- ABS or traction control warnings
- Play in the wheel when rocked
Likely causes
- Normal wear
- Pothole or curb impacts
- Track use and sticky tires
- Water getting past seals
What to check
Diagnostic steps, in order. Stop if any step needs tools or skills you don't have.
- 1Drive at a steady speed and gently weave left and right. A noise that changes may point to a hub on the loaded side.
- 2With the car safely raised on jack stands, rock each wheel top to bottom to check for play.
- 3Spin each wheel by hand and listen for roughness.
- 4Rule out tire noise first; tires with uneven wear can mimic a bearing.
- 5Have a shop confirm before replacing parts.
Possible solutions
- Replace the hub bearing assembly
- Replace damaged ABS sensor or wiring if needed
- Replace hubs in pairs if the other side is also worn
Parts commonly needed
- Hub bearing assembly
- Axle nut (if required by the service manual)
- ABS sensor (if damaged)
Warning signs
- New hum at highway speed
- Noise getting louder over time
- ABS or traction warning that comes and goes
Prevention
- Avoid potholes and curbs
- Inspect hubs before track days
- Check for play whenever the car is on a lift
Information here combines factory data and owner experience and may not apply to your exact car. For brakes, steering, suspension, fuel or anything safety-critical, consult a qualified mechanic. Read the full disclaimer.
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