A Guide to Front Disc Brake Calipers for the 1983-1990 Chevrolet C70
Keep your medium-duty Chevy stopping safely and effectively with the right replacement brake calipers.
- Brake caliper failure is a critical safety issue that requires immediate attention.
- The most challenging part of replacing a caliper on a C70 is often bleeding the Hydro-Vac brake system correctly to avoid a soft pedal.
- It is strongly recommended to replace calipers in pairs to ensure balanced braking.
- Understand the difference between new and remanufactured calipers, and be prepared for a core charge if you choose a remanufactured part.
Signs of a Failing Brake Caliper
A brake caliper should last a long time, but on a hard-working truck like a C70, failures can happen. A seized or leaking caliper is a serious safety issue. Watch for these common symptoms.
- Vehicle Pulling to One Side: When you apply the brakes, a bad caliper can cause the truck to pull to the left or right. This happens because one brake is working harder than the other.
- Spongy or Soft Brake Pedal: If a caliper seal fails and leaks brake fluid, it can let air into the system. This results in a pedal that feels soft or goes down further than usual.
- Brake Fluid Leaks: You might see puddles of a clear or brownish fluid near the inside of a front wheel. This is a sure sign of a leaking caliper seal or bleeder screw.
- Dragging Sensation: A caliper piston or its slide pins can get stuck due to rust or debris. This can cause the brake pads to stay partially applied, making the truck feel sluggish as if it's dragging. You might also notice a burning smell from the overheated brake.
- Uneven Brake Pad Wear: When you inspect your brake pads, if the inner pad is much more worn than the outer pad, it often points to a problem with the caliper or its slide pins.
Vehicle-Specific Considerations for C70 Brakes
Searches for official recalls or Technical Service Bulletins (TSBs) from Chevrolet or the NHTSA specifically for 1983-1990 C70 disc brake calipers did not produce any results. However, owners of these and similar medium-duty Chevy trucks report common issues with the overall brake system.
The most frequent complaint is difficulty in bleeding the brakes after replacing a component like a caliper. These trucks use a Hydro-Vac hydraulic brake booster, which can be tricky to bleed correctly. Many owners report a soft or low pedal even after multiple bleeding attempts, often due to trapped air in the booster or master cylinder. When replacing a caliper, a thorough and proper bleeding procedure is absolutely essential for a firm pedal and safe operation.
Choosing the Right Aftermarket Caliper
For a vehicle from this era, you have several good aftermarket options. These range from remanufactured original parts to brand new units. All brands listed offer calipers that will fit and function correctly on your C70.
Brand Quality Tiers
- Premium Aftermarket (ACDelco): As General Motors' own parts brand, ACDelco is often considered the original equipment equivalent. Their calipers, whether new or remanufactured, are built to meet high standards and often feature protective coatings to resist corrosion.
- Remanufactured Specialists (Cardone, BBB Industries): Brands like Cardone are leaders in remanufacturing. They take original caliper castings, clean them, and rebuild them with new seals, pistons, and hardware. This is a cost-effective and common choice for older vehicles. These parts usually require a "core charge," which is a refundable deposit you get back when you send in your old caliper.
- New Aftermarket (Centric, Dynamic Friction): These brands produce completely new calipers that are designed to match or exceed original specifications. They are a great option if you prefer a brand-new part without the hassle of a core charge.
| Part Type | Estimated Cost (Per Caliper) |
|---|---|
| New Aftermarket Caliper | $38.38 - $217.04 |
| Shop Labor | $150 - $250 |
Frequently Asked Questions
Should I replace brake calipers in pairs?
Yes, it is highly recommended. Calipers wear out over time. If one has failed, the other is likely not far behind. Replacing them in pairs ensures even braking performance and prevents the truck from pulling to one side.
What is a "core charge"?
A core charge is a deposit paid when you buy a remanufactured part, like many calipers from Cardone or BBB Industries. You get this deposit back when you return your old, worn-out caliper. This system allows manufacturers to rebuild the original parts, which is both cost-effective and environmentally friendly.
Do new calipers come with mounting hardware?
It depends. Most new and remanufactured calipers come with new slide pins, boots, and banjo bolt washers. However, the large caliper bracket bolts are often reused. "Loaded" calipers will also include new brake pads. Always check the product description to see what's included.
Why is my brake pedal still soft after replacing the caliper?
For the C70, this is a very common issue related to bleeding the brakes. The Hydro-Vac system can trap air. It may require a specific procedure, like bleeding the master cylinder and booster first, or using a power bleeder to get all the air out. If you have a soft pedal after replacement, the problem is almost certainly air still in the hydraulic system.
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Technical Specifications
Vehicle is equipped with a Hydro-Vac hydraulic brake system. Calipers are for the front disc brakes. Rear brakes are typically drum brakes.
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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.
- Chevrolet C70: