1979-1987 GMC K1500 Rear Drum Brake Hardware Kit Replacement Guide
Restore your truck's stopping power by replacing the small parts that make a big difference in brake performance.
- Always replace the drum brake hardware kit when installing new brake shoes to ensure proper function and prevent noise.
- For this vehicle generation, quality aftermarket brands like Carlson, Centric, and Dynamic Friction are the standard as OEM parts are unavailable.
- Verify your truck's specific rear axle and brake drum diameter before ordering to avoid getting the wrong parts.
- Symptoms like a low brake pedal or poor parking brake performance often point directly to failed self-adjusters within the hardware kit.
Symptoms of a Failing Drum Brake Hardware Kit
The small springs and clips in your K1500's rear brakes are under constant tension and exposed to heat and road grime. Over decades, they fatigue, rust, and break. When the hardware fails, you may experience several brake problems:
- Scraping or Dragging Noises: Weak or broken return springs can fail to pull the brake shoes away from the drum, causing a constant scraping or grinding sound from the rear wheels.
- Spongy or Low Brake Pedal: A common reason for drum brake failure is a seized or corroded self-adjuster. When the adjuster stops working, the shoes have to travel farther to contact the drum, resulting in a pedal that feels soft or goes too close to the floor.
- Poor Parking Brake Performance: The parking brake relies on the drum brake shoes to hold the truck. If the hardware is worn or the shoes are out of adjustment, the parking brake may feel loose or not hold the vehicle securely.
- Vehicle Pulling to One Side: Unevenly worn or failing hardware on one side can cause imbalanced braking, making the truck pull left or right when you apply the brakes.
Always Replace Hardware with Shoes
Brake experts agree that whenever you replace your brake shoes, you should also install a new hardware kit. The old springs have been heat-cycled thousands of times and have lost their tension. Reusing them with new shoes is a common mistake that leads to noise and poor performance.
Choosing the Right Aftermarket Hardware Kit
For a classic truck like the 1979-1987 K1500, new Original Equipment (OEM) hardware from GM is generally unavailable. The aftermarket is the primary source for these parts. Brands like Carlson, Centric, and Dynamic Friction all produce reliable replacement hardware kits that meet or exceed original specifications.
For a part like a hardware kit, brand choice is less critical than simply ensuring you are using a new, complete kit. All three brands are considered reputable for standard, daily-driver use. The price difference between them is minimal, so your choice can be based on availability or personal preference. The most important factor is getting a complete kit to ensure all springs and clips are replaced at the same time.
Check Your Axle and Brake Size
The GMC K1500 was available with different rear axle and brake size options (e.g., 10-inch or 11-inch drums). These differences can change the hardware required. Before ordering, verify your truck's specific configuration to ensure you get the correct kit. This is the most common ordering mistake.
Replacement Cost
| Part Type | Price Range (Part Only) |
|---|---|
| New Aftermarket Hardware Kit | $12.53 - $16.15 |
| New OEM Hardware Kit | Discontinued/Not Available |
Note: Prices are for one kit, which typically services both rear wheels. Prices are accurate as of Q2 2026 and are subject to change.
Frequently Asked Questions (FAQ)
Do I really need to replace the hardware with my new brake shoes?
Yes, it is highly recommended. Old springs lose their tension and can cause the new shoes to drag, squeal, or wear unevenly. A new hardware kit is very inexpensive and ensures the entire brake job is done correctly for long-lasting, quiet performance.
What parts are included in a drum brake hardware kit?
A typical kit includes all the necessary return springs, hold-down springs, pins, clips, and washers for both rear wheels. Many kits for the K1500 also include the self-adjuster cable, lever, and star wheel adjuster assembly.
What other parts should I inspect when replacing the hardware?
While you have the brakes apart, inspect the wheel cylinders for any signs of brake fluid leaks. If a cylinder is leaking, it must be replaced, and the brake shoes must also be replaced as they are contaminated. Also, inspect the brake drums for deep grooves, cracks, or a large lip on the edge.
Is replacing a drum brake hardware kit a difficult job?
For a DIYer with some mechanical experience, it is a manageable but sometimes frustrating task due to the strong springs. Special brake spring pliers can make the job much easier. The 4WD K1500 may require pulling the axle shafts to remove the drums, which adds significant complexity to the job. If you are not comfortable, a professional mechanic can do the job relatively quickly.
Technical Specifications
Kit typically includes return springs, hold-down springs, actuator links, pins, and self-adjuster assemblies. Designed for 10-inch or 11-inch rear drum systems; verify your specific application.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.