Step-by-Step Guide to Replacing Drum Brakes on a 2008 GMC Sierra

How to Change Drum Brakes on a 2008 GMC Sierra

Changing drum brakes on your 2008 GMC Sierra can be a rewarding task, saving you money on labor costs and giving you the satisfaction of doing the job yourself. While it may seem daunting at first, with the right tools, knowledge, and patience, you can successfully complete this job. This guide will provide you with step-by-step instructions on how to change the drum brakes on your GMC Sierra.

Tools and Materials Needed

Before starting, ensure you have the following tools and materials

- Jack and jack stands - Lug wrench - Brake drum puller (if necessary) - Screwdrivers (flathead and Phillips) - Pliers - Brake cleaner - New brake shoes - Spring tool (optional but recommended) - Torque wrench - Safety goggles and gloves

Safety First

Before you begin, make sure to wear safety goggles and gloves to protect yourself from sharp edges and brake dust. Additionally, always work in a well-ventilated area, especially when using brake cleaner.

Step 1 Prepare the Vehicle

1. Park on a Level Surface Ensure that your GMC Sierra is parked on a flat, stable surface to prevent any accidents. 2. Loosen the Lug Nuts Using a lug wrench, loosen the lug nuts on the rear wheels before raising the vehicle. You do not need to remove them completely at this stage.

Step 2 Raise the Vehicle

1. Jack Up the Vehicle Use a jack to lift the rear of the vehicle. Make sure to place the jack in a secure location as specified in the owner’s manual. 2. Secure with Jack Stands Once the vehicle is raised, place jack stands under the vehicle to provide stability.

1. Remove the Lug Nuts Now, remove the lug nuts completely and take off the rear wheels. Set them aside in a safe place.

Step 4 Access the Brake Drum

1. Inspect the Brake Drum Check for any retaining screws or clips that might be holding the drum in place. If present, remove them. 2. Remove the Brake Drum If the drum doesn’t come off easily, you may need a brake drum puller to help detach it. Attach the puller and gently apply pressure until the drum comes off.

Step 5 Inspect and Replace Brake Shoes

1. Inspect the Old Shoes Look at the brake shoes for excessive wear or damage. It’s generally advisable to replace shoes in pairs (both sides) to ensure balanced braking. 2. Remove Old Brake Shoes Note how the old shoes are installed; taking pictures can help. Remove the springs and clips that hold the shoes in place, either by using a spring tool or pliers. Then, carefully detaching the shoes from their mounting points.

Step 6 Install New Brake Shoes

1. Prepare New Shoes Compare the new shoes with the old ones to ensure they are the correct size. 2. Install New Shoes Position the new shoes into place, attaching them to the backing plate. Reinstall the retaining springs and ensure everything is secure. 3. Adjust the Brake Shoes Most brake shoes will have an adjusting mechanism you will need to turn to ensure they make proper contact with the drum.

Step 7 Reattach the Brake Drum

1. Reinstall the Brake Drum Slide the brake drum back onto the hub, ensuring that it fits snugly over the new shoes. 2. Secure Any Retaining Screws If your drum had retaining screws or clips, make sure to reinstall them now.

Step 8 Reinstall the Wheels and Lower the Vehicle

1. Replace the Wheel Put the wheel back on and hand-tighten the lug nuts. 2. Lower the Vehicle Carefully remove the jack stands and lower the vehicle back to the ground. 3. Tighten Lug Nuts Once the vehicle is on the ground, use a torque wrench to tighten the lug nuts to the manufacturer’s specified torque.

Step 9 Test Your Work

1. Pump the Brakes Before driving, pump the brake pedal a few times to settle the new brake shoes against the drum properly. 2. Test Drive Take your GMC Sierra for a short test drive in a safe area to ensure everything is functioning properly.

Conclusion

Changing the drum brakes on your 2008 GMC Sierra can be a straightforward project if you follow the steps carefully. Not only does it enhance your vehicle's braking performance, but it also gives you valuable hands-on experience. Always remember to consult your vehicle’s manual for specific information and safety guidelines. Happy fixing!