Why do brakes need to be replaced in the first place?

Friction material on the brake pads or shoes rubs against rotors or drums to slow the vehicle. In time, that material wears away and the pads/shoes must be replaced. Sometimes the rotors and drums also must be replaced.

What’s the squealing sound I hear when braking?

Over time, wear indicators in brakes pads may contact the rotors’ surface when braking, resulting in a metallic squealing sound. Vehicles equipped with wear sensors may also provide an alert that minimum brake pad thickness has been reached.

What if it’s more of a grinding sound?

If all the friction material has been worn away, the metal backing plate of the brake pad will be the material in contact with the rotor during braking. It causes a grinding sound and braking performance is often diminished.

What about vibrations or shaking in the steering wheel?

This is more serious than pulsation. If the brakes are very worn or the rotors are warped, there can be a significant vibration or shaking in the steering wheel when braking. It may mean brake service is needed immediately.

Why do the brakes seem to pulsate when stopping?

It may be due to poor-quality brake pads, warped rotors or unevenly worn tires. Have the pulsation diagnosed as soon as possible to avoid the possibility of greater brake system wear or damage.

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ACDelco Silver 18A917A (19261772) Non-Coated Front Disc Brake Rotor

Product ID: 5532080

Details

Brand
ACDelco
Exterior Finish
Machined
Global Trade Identification Number
Manufacturer
AC Delco
Number of Items
1
OEM Part Number
19261772

🔥Multi-alloy heat dissipation

⚖️Mill-balanced precision

🛡️Rounded radius strength

Description

🛑 Stop Safe, Drive Confident: The Smart Rotor Upgrade You Can’t Miss!

PRECISION MILL BALANCED - Rotor is perfectly balanced at the factory—no extra weights needed for smooth, vibration-free braking.
UNIVERSAL FIT FOR VERSATILITY - Designed for General Motors and compatible with most makes and models, so you never compromise on safety.
DURABILITY MEETS DEPENDABILITY - Rounded radius design enhances rotor strength and longevity, ensuring reliable stopping power.
ENGINEERED FOR PEAK PERFORMANCE - Multi-alloy construction maximizes heat dissipation to keep your brakes cool under pressure.
OEM BACKED QUALITY AT A SMART PRICE - ACDelco Silver rotors deliver trusted General Motors quality without the premium price tag.

The ACDelco Silver 18A917A front disc brake rotor combines multi-alloy metallurgy and mill-balanced precision to deliver reliable, cool-running braking performance. Engineered with a rounded radius for added strength, this OEM-backed rotor fits General Motors and many other vehicles, offering an economical yet dependable upgrade for professional-grade stopping power.

Specifications

ASIN	B003YMRO1Y
Best Sellers Rank	#2,196,674 in Automotive ( See Top 100 in Automotive ) #6,223 in Automotive Replacement Brake Rotors
Brand Name	ACDelco
Customer Reviews	4.5 4.5 out of 5 stars (312)
Exterior Finish	Machined
Global Trade Identification Number	00707773650318
Included Components	Brake Rotor
Item Type Name	Brake Rotor
Item Weight	16 pounds
Manufacturer	AC Delco
Manufacturer Part Number	19261772
Manufacturer Warranty Description	12 Months / Unlimited Miles (Parts Only)
Model Number	18A917A
Number of Items	1
OEM Equivalent Part Number	19261772
UPC	707773650318
Unit Count	1 Count

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