The Ultimate Guide to 2012 Chevy Malibu Hub Bearings: Maintenance, Symptoms, and Troubleshooting

Introduction

The 2012 Chevy Malibu is a midsize sedan that has been a popular choice for drivers for its reliability, comfort, and fuel efficiency. However, like any vehicle, the Malibu can experience issues over time, including problems with the wheel hub bearings.

Wheel hub bearings are essential components that allow the wheels to rotate smoothly and support the weight of the vehicle. When a hub bearing fails, it can cause a variety of symptoms, including noises, vibrations, and even difficulty steering.

In this article, we will provide comprehensive information on the 2012 Chevy Malibu hub bearings, including their function, common symptoms of failure, and step-by-step instructions on how to replace them. We will also discuss common mistakes to avoid when replacing hub bearings and provide tips on how to extend their lifespan.

Function of Wheel Hub Bearings

Wheel hub bearings are located at the center of the wheel and connect the axle to the wheel assembly. They serve two main functions:

1. Support the weight of the vehicle: The hub bearings carry the weight of the vehicle and distribute it evenly across the wheel. This helps to prevent the wheels from wobbling or collapsing.
2. Allow the wheels to rotate smoothly: The hub bearings allow the wheels to rotate smoothly and freely, which is essential for driving. When the hub bearings are damaged, they can cause the wheels to bind or seize, which can lead to serious safety issues.

Symptoms of a Bad Hub Bearing

There are several symptoms that can indicate a bad hub bearing in your 2012 Chevy Malibu. These symptoms include:

• Noises: A grinding, humming, or growling noise coming from the wheel area is a common sign of a bad hub bearing. The noise may be worse when turning or accelerating.
• Vibrations: You may feel vibrations in the steering wheel, floorboard, or seat when driving. These vibrations can be caused by a damaged hub bearing that is causing the wheel to wobble.
• Difficulty steering: In severe cases, a bad hub bearing can cause difficulty steering. This is because the damaged bearing can make it difficult for the wheel to turn smoothly.
• Uneven tire wear: If a hub bearing is failing, it can cause the wheel to wobble, which can lead to uneven tire wear.

How to Replace a Hub Bearing on a 2012 Chevy Malibu

Replacing a hub bearing on a 2012 Chevy Malibu is a job that is best left to a professional mechanic. However, if you are confident in your mechanical abilities, you can follow these step-by-step instructions:

Parts and Tools You Will Need

• New wheel hub bearing
• Socket set
• Wrench
• Hammer
• Screwdriver
• Jack and jack stands
• Safety glasses and gloves

Step-by-Step Instructions

1. Safety first: Park the vehicle on a flat surface and engage the parking brake. Place wheel chocks behind the wheels opposite the one you will be working on.
2. Remove the wheel: Use a socket wrench to loosen the lug nuts on the wheel that is attached to the bad hub bearing. Do not remove the lug nuts completely.
3. Jack up the vehicle: Using a jack, carefully lift the vehicle until the wheel is off the ground. Place a jack stand under the frame for safety.
4. Remove the brake caliper: Use a wrench to loosen the bolts that hold the brake caliper in place. Carefully remove the caliper and hang it out of the way using a bungee cord or wire.
5. Remove the rotor: Use a socket wrench to remove the bolts that hold the rotor in place. Carefully remove the rotor.
6. Remove the hub bearing: Use a socket wrench to remove the bolts that hold the hub bearing in place. Carefully remove the hub bearing from the wheel assembly.
7. Install the new hub bearing: Apply a thin layer of grease to the new hub bearing and carefully insert it into the wheel assembly.
8. Tighten the hub bearing bolts: Use a socket wrench to tighten the bolts that hold the hub bearing in place.
9. Reinstall the rotor: Carefully place the rotor over the hub bearing and tighten the bolts that hold it in place.
10. Reinstall the brake caliper: Carefully place the brake caliper over the rotor and tighten the bolts that hold it in place.
11. Reinstall the wheel: Carefully place the wheel on the hub and tighten the lug nuts.
12. Lower the vehicle: Slowly lower the vehicle using the jack.
13. Tighten the lug nuts: Use a socket wrench to fully tighten the lug nuts.

Common Mistakes to Avoid

When replacing a hub bearing, it is important to avoid the following common mistakes:

• Overtightening the bolts: Overtightening the bolts that hold the hub bearing in place can damage the bearing and lead to premature failure.
• Using the wrong tools: Using the wrong tools to remove or install the hub bearing can also damage the bearing.
• Not replacing the bolts: It is important to replace the bolts that hold the hub bearing in place. Reusing old bolts can lead to the bearing becoming loose and failing.
• Not cleaning the mating surfaces: Before installing the new hub bearing, it is important to clean the mating surfaces of the wheel assembly and the hub bearing. This will help to ensure a proper fit and prevent the bearing from failing prematurely.
• Not checking the other wheel hub bearings: If one hub bearing has failed, it is a good idea to check the other wheel hub bearings for signs of wear or damage. Replacing all of the hub bearings at the same time can help to prevent future problems.

Why Hub Bearing Maintenance Matters

Wheel hub bearings are an essential part of your vehicle's suspension system. They allow the wheels to rotate smoothly and support the weight of the vehicle. When a hub bearing fails, it can cause a variety of problems, including:

• Noise: A bad hub bearing can cause a grinding, humming, or growling noise that is noticeable when driving.
• Vibrations: A bad hub bearing can cause vibrations in the steering wheel, floorboard, or seat when driving.
• Difficulty steering: In severe cases, a bad hub bearing can cause difficulty steering.
• Premature tire wear: A bad hub bearing can cause the wheel to wobble, which can lead to uneven tire wear.

Benefits of Replacing Bad Hub Bearings

Replacing bad hub bearings can provide a number of benefits, including:

• Improved safety: A bad hub bearing can cause a variety of safety issues, including difficulty steering and premature tire wear. Replacing bad hub bearings can help to prevent these problems and improve the safety of your vehicle.
• Reduced noise and vibrations: A bad hub bearing can cause a grinding, humming, or growling noise that is noticeable when driving. Replacing bad hub bearings can eliminate these noises and restore a smooth, quiet ride.
• Extended tire life: A bad hub bearing can cause the wheel to wobble, which can lead to uneven tire wear. Replacing bad hub bearings can help to prevent premature tire wear and extend the life of your tires.
• Improved fuel efficiency: A bad hub bearing can cause increased friction, which can lead to reduced fuel efficiency. Replacing bad hub bearings can help to improve fuel efficiency and save you money on gas.

Pros and Cons of Replacing Hub Bearings Yourself

Replacing hub bearings yourself can save you money compared to having a mechanic do it. However, there are also some potential risks to consider:

Pros

• Cost savings: Replacing hub bearings yourself can save you a significant amount of money compared to having a mechanic do it.
• Convenience: You can replace hub bearings yourself on your own schedule, without having to take your vehicle to a mechanic.
• Satisfaction: There is a sense of satisfaction that comes from completing a repair yourself.

Cons

• Risk of damage: If you are not experienced in replacing hub bearings, you could damage the bearing or other parts of your vehicle.
• Time commitment: Replacing hub bearings can be a time-consuming job, especially if you are not familiar with the process.
• Safety concerns: Replacing hub bearings can be dangerous if you do not take proper safety precautions.

FAQs

Q: What are the signs of a bad hub bearing?
A: The signs of a bad hub bearing include a grinding, humming, or growling noise, vibrations in the steering wheel, floorboard, or seat, difficulty steering, and uneven tire wear.

Q: How much does it cost to replace a hub bearing?
A: The cost to replace a hub bearing can vary depending on the make and model of your vehicle, as well as the labor rates in your area. However, you can expect to pay between $200 and $500 for parts and labor.

Q: Can I replace a hub bearing myself?
A: Yes, you can replace a hub bearing yourself if you are confident in your mechanical abilities. However, it is important to note that this is a complex repair and should only be attempted by experienced mechanics.

Q: How often should I replace my hub bearings?
A: Hub bearings typically last between 50,000 and 80,000 miles. However, the lifespan of a hub bearing can be shortened by a number of factors, such as driving conditions and the type of vehicle you drive.

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