Official Site · American O.E.M. Parts Company
Category 05 of 12

Brake System

Brake pads, rotors, calipers, master cylinders, ABS sensors and hydraulic lines to General Motors original specification. Fitment verified by VIN.

Braking is the one system where original specification is a safety argument rather than a preference. GM validates pad friction coefficient against the vehicle's mass, the ABS calibration and the rotor's metallurgy as a single package. A pad with a different friction curve changes stopping distance, alters how quickly the ABS module intervenes, and on trucks with trailer brake integration changes the balance between vehicle and trailer. We supply friction and hydraulic components to the original specification for the platform.

How braking force reaches the wheel

1 Brake Pedal driver input 2 Master Cylinder builds pressure 3 ABS Module modulates 4 Brake Lines hydraulic path 5 Caliper clamps 6 Pads & Rotor friction, heat
Schematic view — component order shown for orientation. Not a model-specific engineering drawing.

Pedal force becomes hydraulic pressure, the ABS module modulates it per wheel, and the caliper converts it back into clamping force at the rotor.

What we supply in this category

Symptoms that point to this system

Common complaints

  • Pedal travel increasing gradually over weeks
  • Judder through the pedal or steering wheel under braking
  • Uneven pad wear between the inner and outer pad
  • ABS or traction control warnings at low speed
  • A brake pedal that sinks slowly under steady foot pressure

Before you order

Brake judder is far more often caused by uneven pad material transfer and hub runout than by a genuinely warped rotor. Check hub face runout before condemning the rotor, or the new one will develop the same symptom.

Vehicle coverage

We supply Brake System components across every General Motors division:

Questions we are asked about Brake System

Do rotors need replacing with every pad change?

Not always, but they must be measured. If thickness is at or near the discard limit stamped on the rotor, or lateral runout is out of specification, replacement is the only correct answer.

Why does the ABS activate on a low-speed stop?

This is usually a wheel speed sensor or a damaged reluctor ring sending an implausible signal at low speed, not a hydraulic fault. Scan for the specific wheel before replacing hydraulic parts.

Need this part identified?

Send the VIN and a description. We will identify the correct OE part and quote it back to you.

Request a Quote