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Brake Pads: Professional Semi Metallic Pads | ACDelco

ACDelco Professional Semi-Metallic Disc Brake Pads are formulated with steel strands to provide strength and conduct heat away from the rotor’s surface while offering premium braking power. They are the ideal high-quality aftermarket replacement for your GM and non-GM vehicle. Noise-dampening shims are included where applicable. Also, no curing is required. Independently tested using SAE J2784 standards, these pads deliver the fit, form and function you expect from ACDelco. ACDelco Professional Semi-Metallic Brake Pads are ready to be installed right out of the box.


  • Tested to SAE J2784 for braking effectiveness, along with Noise/Vibration/Harshness (NVH) and durability/wear testing for assurance of quality
  • Ceramic, semi-metallic and organic formulas provide safety and reliability for a range of vehicle applications
  • Integrally molded – friction material molded to backing plate for bond integrity
  • Premium shims, slots and chamfers help to diminish noise, vibration and braking harshness
  • Stamped backing plate allows for proper pad movement within the caliper assembly, reducing noise, brake pulsation and helps to protect against premature wear



Flat pads with frictional materials contact the rotor to help slow or stop the vehicle (disc brakes).

Signs of Wear & Troubleshooting:

Brake pad signs of wear include:

  • Chirping, grinding or squeaking noises when braking.
  • Difficulty stopping the vehicle.
  • A low or sinking brake pedal.
  • Brake-pedal pulsation (not to be confused with normal ABS operation).
  • Vehicle pulls to the left or right when brakes are applied.

Did You Know?

When you step on your brake pedal, you command a stopping force 10 times as powerful as the force that puts the car in motion. The brakes system can exert as much as 1,000 pounds (450 kg) of hydraulic pressure on each of the four brakes.

What It Does:

The Brake System applies frictional force to the wheels to slow or stop the vehicle.

Good Maintenance Practices:

The following inspections and maintenance procedures can help prevent potential brake problems:

  • Check brake fluid level at every oil change. Replace fluid according to owner’s manual recommendations.
  • Calipers and wheel cylinders should be checked at every brake inspection and serviced or replaced as required.
  • Inspect the brake lines for rust, punctures or visible leaks. (You may be able to do this, but consult a qualified technician if necessary.)
  • Check the thickness of your brake pads.

The following should be conducted by a qualified technician:

  • Inspection of the brake hoses for brittleness or cracking.
  • Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
  • Inspection of wheel bearings and grease seals.
  • Parking-brake adjustments (as needed).

Brake Tech Tips:

  • Lubricate caliper slides, shims and rubber components.
  • Use ACDelco silicone-based lubricant or equivalent before installation. ACDelco lubricant is rated at 2,000° F. DO NOT use a petroleum-based or spray adhesive product:
    • Lubricate all hardware rubber components and all metal-to-metal contact points.
    • Give caliper slides and disc pad shims/insulators a thin film of lubricant. This will allow the shim to withstand normal brake pad movement without damage to the shim. Additionally, this helps dampen vibration.
  • Make sure the disc pads are tight in the caliper and torque the caliper to the housing.
  • Check the adjustment of the rear brakes. Adjust if necessary.
  • After cleaning all wheel-hub mating surfaces, install the wheels. Make sure they are torqued to manufacturer's specifications.



Do I have to replace all my brake parts when replacing my brake pads?

  • No, but it is a good idea to inspect them for wear-out, cracking, leaking, etc.

Does ACDelco offer other grades of brake pads?

  • Yes, ACDelco also offers GM OE brake pads and Advantage brake pads.

Do I have to replace my brake pads after a certain amount of time?

  • No, but it is a good idea to inspect your brake pads at each tire rotation.

Are these brake parts durable?

  • Yes, ACDelco Professional Disc Brake Pads come with a limited lifetime warranty.

Limited Warranty:

12 Months/Unlimited Miles*

*To the original purchaser. Parts only; installation not included. See your local retailer or Independent Service Center that offers ACDelco parts for details.

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