Steps to Replace Drum Brakes on a 2008 GMC Sierra Efficiently and Safely

How to Change Drum Brakes on a 2008 GMC Sierra

Changing the drum brakes on a 2008 GMC Sierra is a task that many truck owners can undertake with a bit of preparation and the right tools. While brake maintenance may seem daunting, the process can be straightforward if you follow the steps methodically. This guide will walk you through changing the drum brakes step by step.

Tools and Materials Needed

Before you start, gather the following tools and materials

- Jack and jack stands - Lug wrench - Brake drum puller (optional, if drums are stuck) - Screwdrivers (flathead and Phillips) - Brake cleaner - Replacement brake shoes - Spring tool (for brake springs) - Torque wrench - Gloves and safety goggles

Step 1 Prepare the Vehicle

1. Safety First Park the Sierra on a level surface and engage the parking brake. Wear gloves and safety goggles throughout the process. 2. Loosen the Lug Nuts Use a lug wrench to slightly loosen the lug nuts on the rear tires before lifting the vehicle. 3. Lift the Vehicle Use a jack to lift the rear of the truck and securely place jack stands under the frame. Ensure the vehicle is stable before you continue.

1. Remove the Lug Nuts Fully remove the lug nuts and take off the rear wheels. Set them aside in a safe place. 2. Inspect the Brake Drums Check for any visible damage or wear on the brake drums. If they have deep grooves or cracks, consider replacing them as well.

Step 3 Remove the Brake Drums

1. Remove Brake Drum Gently tug on the brake drum. If it doesn't come off easily, it may be rusted or have grooves that hold it in place. Use a brake drum puller if necessary. 2. Inspect Components Once the drum is removed, check the brake components for wear, including the springs, retainers, and backing plate.

Step 4 Remove the Old Brake Shoes

1. Take Photos Before disassembling, take a few photos of the current configuration of the brake components. This will help ensure proper reassembly. 2. Remove Springs Using the spring tool, carefully remove the springs that hold the brake shoes in place. 3. Detach Brake Shoes Remove the shoes from the backing plate, noting how they are connected. These will typically be secured with pins and clips that can be removed with a screwdriver.

Step 5 Install the New Brake Shoes

1. Clean the Area Use brake cleaner to clean the backing plate and any exposed areas to remove dust and debris. 2. Install New Shoes Begin installing the new brake shoes by following the configuration from your earlier photos. Make sure all pins, clips, and springs are replaced securely. 3. Check Adjuster Ensure the brake adjuster is in good condition and properly positioned. It should be adjusted to provide ample contact between the shoes and the drum.

Step 6 Reassemble and Test

1. Reattach the Drum Place the brake drum back over the newly installed shoes. It should slide on easily, if it doesn't, make any needed adjustments. 2. Put the Wheel Back On Replace the wheel and hand-tighten the lug nuts. 3. Lower the Vehicle Carefully remove the jack stands and lower the vehicle back to the ground. 4. Torque the Lug Nuts Once on the ground, use a torque wrench to tighten the lug nuts to the specified torque rating—typically around 75-90 ft-lbs for a GMC Sierra.

Step 7 Final Check

1. Pump the Brakes Before driving, pump the brake pedal a few times to seat the new shoes against the drum. 2. Test Drive Take the truck for a short drive, testing the brakes at low speeds to ensure they function properly and do not make unusual noises.

Conclusion

Changing the drum brakes on your 2008 GMC Sierra can save you money and give you a sense of accomplishment. With the right tools and a little patience, you can complete this task efficiently and safely. Always refer to your owner’s manual for specific guidance and torque specifications related to your vehicle. Consistent maintenance will keep your GM Sierra in top shape and provide a safer driving experience.