1975-1978 GMC G15 Rear Drum Brake Hardware Replacement
Get your classic G15 stopping safely and quietly with the right new drum brake hardware kit.
- Always replace the drum brake hardware kit when changing brake shoes; it's a cheap part that is critical for safety.
- For the 1975-1978 G15, aftermarket is the only option for new hardware. Brands like Carlson, Centric, Dorman, and Dynamic Friction are all suitable choices.
- Symptoms of failure include scraping noises, a weak parking brake, and a low or spongy brake pedal.
- This job is DIY-feasible but requires patience and special brake spring tools for safety and ease of installation.
Symptoms of Failing Drum Brake Hardware
The springs and clips in your G15's rear brakes operate under constant tension and heat. Over 40+ years, they wear out, rust, and lose their strength. When the hardware fails, it can cause a range of braking problems. You are the best judge of how your van drives, so pay attention to any new noises or changes in brake feel.
- Scraping or Grinding Noises: A common sign is a metallic scraping or dragging sound from the rear wheels. This can happen if a broken spring allows a brake shoe to make constant contact with the drum.
- Spongy or Low Brake Pedal: If the hardware isn't retracting the shoes properly, it can create extra space. This may make the pedal feel soft, spongy, or travel closer to the floor before the brakes engage.
- Poor Parking Brake Performance: The parking brake on these vans relies on the rear drum components. If the hardware is weak or broken, the parking brake may not hold the vehicle securely, or it might feel loose when you apply it.
- Brakes Dragging or Pulling: Corroded or weak springs can fail to pull the brake shoes back from the drum, causing the brakes to drag. This creates heat, hurts fuel economy, and can cause the van to pull to one side when you apply the brakes.
A Note on Aftermarket Quality
For a vintage vehicle like the 1975-1978 G15, new original equipment (OEM) hardware from GM is no longer available. All new kits are from aftermarket manufacturers. While most aftermarket kits provide reliable performance, some owners of similar GM vans have reported issues with certain low-quality self-adjuster parts causing brakes to drag. It is always recommended to replace the hardware every time you replace your brake shoes.
Choosing the Right Aftermarket Hardware Kit
When you're shopping for a drum brake hardware kit, you'll find several brands available. For a classic workhorse like the G15, all the major aftermarket brands offer kits that will restore original performance. The differences often come down to price and minor variations in materials.
Available Brands:
- Economy Tier (Carlson, Dynamic Friction): These brands offer a great value. Carlson specializes in brake hardware and is known for good fitment at a low price. Dynamic Friction is also considered a legitimate parts manufacturer, with quality that is perfectly suitable for a daily driver.
- Standard Tier (Centric, Dorman): These are some of the biggest names in aftermarket parts. Centric is widely viewed as a reliable choice for brake components. Dorman offers a massive catalog, and their hardware kits are a common repair choice.
Pro Tip: Always buy a complete kit for each side of the vehicle. These kits are inexpensive, and mixing old, fatigued springs with new ones can cause uneven braking and premature wear.
Typical Cost for a New Drum Brake Hardware Kit (1975-1978 GMC G15)
| Part Type | Price Range |
|---|---|
| New Aftermarket Drum Brake Hardware Kit | $11.98 - $18.75 |
| Shop Labor for Rear Brake Service | $150 - $300 |
(Pricing as of Q2 2026. Labor costs are estimates and vary by location and shop.)
Frequently Asked Questions
Do I have to replace the hardware when I replace my brake shoes?
Yes, it is highly recommended. The springs lose tension over time, and the cost of a new hardware kit is very low compared to the cost of the whole job. Reusing old hardware can lead to noise, dragging, and uneven wear on your new shoes.
What parts are included in a drum brake hardware kit?
A complete kit typically includes all the necessary springs (return springs, adjuster springs), pins (hold-down pins), and clips needed to service both rear wheels. It contains everything needed to properly secure and operate the new brake shoes.
Is this a difficult job to do myself?
Replacing drum brake hardware can be tricky. It involves working with strong springs under tension, which requires special tools like brake spring pliers and hold-down spring tools to do safely and efficiently. While it is possible for a DIY mechanic, it requires patience and careful attention to how the parts are assembled. Taking a picture before you take anything apart is a great tip for reassembly.
Are there any recalls on the G15 for brake hardware?
No, there are no active recalls or Technical Service Bulletins (TSBs) from the NHTSA for the drum brake hardware on the 1975-1978 GMC G15. This is normal for a vehicle of this age and for this type of wear-and-tear component.
Technical Specifications
Kit contains springs, pins, and clips for rear drum brakes. Designed for the GM 10-bolt or 12-bolt rear axles commonly found in the G15 van.
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.