Brakes · AC Delco Pads & Rotors
AC Delco Brake Components: A DIY Buyer’s Hub
Most do-it-yourself brake jobs that go wrong go wrong at the parts counter, not in the driveway: the wrong rotor diameter, the wrong pad for the brake package, a missing hardware kit. This is the buying half of the job — which AC Delco line, which part for your truck or car, and what to order in the same box.
Browse Genuine GM PartsQuick Answer
For a DIY brake job on a GM vehicle, choose between three GM-backed lines: GM Genuine Parts (the original-equipment pads and rotors), ACDelco Gold (premium replacement, formerly called Professional) and ACDelco Silver (value replacement, formerly Advantage). Match the part to your vehicle’s brake package using the VIN, not just year, make and model, and order pads, rotors and the hardware kit together.
GM Genuine, ACDelco Gold or ACDelco Silver?
The AC Delco name covers more than one product line, and the labels changed in GM’s 2020 packaging refresh, which is why parts listings online still mix the old and new names. All three are backed by GM. The difference is how closely each one tracks the part your vehicle left the factory with.
| Line | Former name | What it is | Best fit for |
|---|---|---|---|
| GM Genuine Parts | ACDelco GM Original Equipment | The same pads and rotors GM installs at the factory | Keeping the original feel, noise level and wear life |
| ACDelco Gold | ACDelco Professional | Premium replacement built to GM fit, form and function | Daily drivers, trucks and SUVs where quality matters most |
| ACDelco Silver | ACDelco Advantage | Value replacement covering most makes and models | Budget repairs and older vehicles, including non-GM |
For a deeper look at how original-equipment and replacement parts differ across categories, see our GM OEM vs aftermarket parts guide.
Why Year, Make and Model Is Not Enough
GM builds most vehicles with more than one brake package. A half-ton pickup, a heavy-duty pickup and a full-size SUV from the same year can carry different rotor diameters and different calipers, and so can two trims of the same model. GM tracks each package with a Regular Production Option (RPO) code, and brake packages are generally identified by J-series codes.
On many GM vehicles, those codes are printed on a Service Parts Identification label, often inside the glove box. Newer vehicles may not carry the label, but the codes are still tied to the VIN. That is why a VIN lookup is the reliable way to order: it resolves the exact brake package the truck was built with, instead of the most common one for the model.
Fitment by GM Model: What Varies
The trucks and SUVs that make up most DIY brake orders are also the ones with the most brake variation. What changes, and what the VIN settles:
| Model line | What varies | Confirm by VIN |
|---|---|---|
| Silverado 1500 / Sierra 1500 | Generation (redesigned for 2019), brake package, and rear parking brake design; the 2019 redesign made an electric parking brake standard | Brake RPO code, front and rear rotor, rear caliper type |
| Silverado / Sierra 2500HD and 3500HD | Heavy-duty brake hardware separate from the 1500; single or dual rear wheels on the 3500 | HD brake package and rear wheel configuration |
| Tahoe / Suburban / Yukon | Generation (redesigned for 2021), brake package and trim | Generation and brake RPO code |
| Equinox, Terrain and other crossovers | Brake package by engine and trim; electric parking brake on some model years | Brake package and rear caliper type |
Towing and trailering packages change brake hardware too, so two trucks that look identical in the driveway can need different rotors. That is why we confirm the package before anything ships.
Pad Compounds: What the Label Is Telling You
Ceramic
Quieter operation and less visible brake dust. A common choice for passenger cars and crossovers used mostly for commuting.
Semi-metallic
Handles heat well under repeated hard stops, towing and heavy loads, at the cost of more dust and some added noise. Common on trucks.
The original-equipment compound was chosen for that vehicle’s weight and use. If you are replacing pads on a truck that tows, staying with the compound the brake package was engineered for is the safe default; switching to a quieter compound for comfort can cost stopping performance when the brakes are hot.
Rotors: What FNC Treatment Means for a New Jersey Car
Many GM original-equipment rotors are made with Ferritic Nitro-Carburizing (FNC), a case-hardening treatment that diffuses nitrogen and carbon into the rotor surface. GM says the process can help double rotor life, and it resists the surface rust that causes pedal and steering-wheel shudder. Road salt is hard on that protection, so in the Northeast it wears sooner than it does in dry climates. The figures below are GM’s own, as reported by Torque News.
2x
Rotor life GM says FNC treatment can help deliver.
2008
The year GM began using FNC on brake rotors.
70%
Reduction in brake warranty claims GM attributes to FNC.
Because the treatment lives in the surface layer, resurfacing a worn FNC rotor on a brake lathe removes it. For a DIY job, replacing rotors in pairs rather than machining them keeps the corrosion protection intact.
How to Tell It Is Time to Buy
Pads and rotors wear on their own schedules, and the signs are specific enough to check before you order anything:
| Sign | What it usually means |
|---|---|
| High-pitched squeal that stops when you brake | The pad’s audible wear tab is touching the rotor; pads are near the end |
| Grinding or metal-on-metal noise | Friction material is gone; the rotor is being damaged and likely needs replacing too |
| Pulsation in the pedal or steering wheel | Uneven rotor thickness or surface rust buildup |
| Deep grooves or a raised lip at the rotor edge | Rotor wear; measure it against the minimum thickness |
| Brake wear warning on the dash | An electronic wear sensor has tripped, on models that use one |
Every rotor has a minimum thickness stamped on it, usually on the center hat or the edge. A rotor measured with a micrometer below that figure is replaced, no matter how it looks.
Front and Rear Are Different Jobs
The front brakes do most of the stopping, so front pads usually wear out first and front rotors are larger. Rear brakes on most current GM vehicles are discs too, but they bring two details the front does not. Many GM trucks and SUVs, particularly earlier generations, carry the parking brake as a small drum inside the hat of the rear rotor, with its own shoes that are inspected whenever the rear rotor comes off. Newer models, including the 2019-and-later Silverado and Sierra 1500, instead use an electric parking brake at the rear calipers, which changes how the piston is retracted. Order front and rear parts as separate axle sets, and check which rear design your vehicle has before buying.
What to Order in the Same Box
Pads and rotors, per axle
Brakes are replaced in axle sets, both sides together, so the vehicle stops straight.
Hardware kit
Abutment clips and anti-rattle hardware lose tension with heat cycles. New pads on old clips are a common source of noise and uneven wear.
Caliper slide pin grease and boots
Seized slide pins cause one pad to wear faster than the other. Fresh high-temperature brake lubricant and intact boots keep the caliper floating freely.
Brake fluid
Most GM vehicles specify DOT 3 fluid; the reservoir cap states the requirement for yours. Have a sealed container on hand to top off after the job.
Wear indicators
Most GM pads use an audible wear tab. Some models use an electronic wear sensor that is replaced along with the pads.
With parts in hand, our AC Delco brake pad and rotor DIY installation guide walks through the job itself, from lifting the vehicle to bedding in the new pads.
Expert Tip: Check Your Brake Fluid Against the 2026 Recall
In 2026, GM recalled 40,440 containers of ACDelco GMW DOT 3 brake and clutch fluid, part number 19353126, produced between October 19 and December 28, 2022, after federal compliance testing found visible sediment that could reduce braking performance. The campaign is NHTSA recall 26E025. If you have a bottle of that part number sitting on a garage shelf, check the production date on the label before you use it to top off a new brake job, and set it aside if it falls in that window.
A Parts Counter That Checks the Brake Package First
Malouf Parts Xperts is the genuine GM parts operation behind Malouf Chevrolet Cadillac in North Brunswick, New Jersey. Send us your VIN with your brake order and a parts expert will confirm the brake package, front and rear, before anything ships — so the rotors that arrive are the rotors that fit.
Have a Parts Expert Confirm Your Brake FitmentAC Delco Brake Components FAQ
Where can I buy AC Delco brake pads and rotors for a DIY brake job?
A GM parts dealer such as Malouf Parts Xperts sells GM Genuine Parts, ACDelco Gold and ACDelco Silver brake components and can match them to your vehicle by VIN before shipping.
What is the difference between ACDelco Gold and ACDelco Silver?
ACDelco Gold, formerly Professional, is the premium replacement line built to GM fit, form and function. ACDelco Silver, formerly Advantage, is the value line covering most makes and models. Both are backed by GM.
Are GM Genuine Parts brakes the same as the factory brakes?
Yes. GM Genuine Parts are the original-equipment pads and rotors GM installs at the factory, sold under the name that replaced ACDelco GM Original Equipment.
Why do I need my VIN to order brake parts?
GM builds many vehicles with more than one brake package, identified by RPO codes. Two trucks of the same year and model can need different rotors. The VIN resolves the exact package your vehicle was built with.
Can FNC brake rotors be resurfaced?
Resurfacing removes the treated surface layer that gives FNC rotors their corrosion resistance, so replacing worn rotors in pairs is the usual approach.
Which ACDelco brake fluid was recalled?
ACDelco GMW DOT 3 brake and clutch fluid, part number 19353126, produced between October 19 and December 28, 2022. Check the production date on the container before use.