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

Friction material on the brake pad contacts the rotors to slow the vehicle. In time, that material wears away and the pads must be replaced. Sometimes the rotors and calipers must also be replaced.

What’s the squealing sound I hear when braking?

Over time, wear indicators in brake 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.

Why do the brakes seem to pulsate when stopping?

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

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 unevenly worn, there can be a significant vibration or shaking in the steering wheel when braking. It may mean brake service is needed immediately.

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GM Genuine Parts 178-0911 (23135220) Power Brake Booster Assembly

GM Genuine Parts 178-0911 (23135220) Power Brake Booster Assembly

Product ID: 85592445

🚗Boosts braking power

⚙️OE-spec precision fit

🛠️Durable factory-grade build

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8837972₫

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚦 Stop Short of Ordinary – Upgrade to Genuine Power!

FACTORY BACKED RELIABILITY - Manufactured to GM’s rigorous standards for unmatched durability and trust.
LIGHTWEIGHT YET ROBUST DESIGN - At just 9.75 lbs, it balances strength and efficiency for long-lasting use.
POWER BOOSTED BRAKING PERFORMANCE - Amplifies pedal force for confident, responsive stops every time.
PRECISION ENGINEERED FOR GM VEHICLES - Seamless OE-spec fit ensures hassle-free installation and peak performance.
DIRECT REPLACEMENT FOR ORIGINAL PARTS - Maintains your vehicle’s integrity with genuine GM quality and compatibility.

The GM Genuine Parts 178-0911 Power Brake Booster Assembly is a factory-engineered, OE-spec replacement designed to restore and enhance braking power in GM vehicles like Escalade, Silverado, and Tahoe. Weighing 9.75 pounds and built to rigorous GM standards, it guarantees reliable, durable performance and a perfect fit, ensuring your brake system operates with maximum efficiency and safety.

Specifications

ASIN	B00S0HC7O2
Best Sellers Rank	#1,338,955 in Automotive ( See Top 100 in Automotive ) #887 in Automotive Replacement Power Brake Systems
Brand	GM GENUINE PARTS
Customer Reviews	4.0 4.0 out of 5 stars (52)
Date First Available	January 9, 2015
Exterior	Machined
Item Weight	9.75 pounds
Item model number	178-0911
Manufacturer	ACDelco
Manufacturer Part Number	23135220
Model	Escalade,Silverado,Suburban,Tahoe,Sierra,Yukon,Yukon XL
OEM Part Number	23135220
Product Dimensions	16.8 x 12.3 x 12.3 inches

Reviews

J**.

Buen precio

Excelente precio

28.01.2026

N**E

Defective part

Part arrived missing a stud for the master cylinder mount. It was a defective part. After a long process with the seller and Amazon, nothing has been resolved. They kept my money and I'm left with a defective part. Do not order from this provider. Buy elsewhere.

26.02.2025

D**D

OEM Quality at Great Price

Exactly as described, best price I found online.

10.08.2020

N**T

Five Stars

priced right

11.07.2017

C**.

Poor quality control

After I got it just about all the way installed, I went to install the master cylinder and it turns out one of the bolts for the master cylinder wasn’t seated correctly in the booster, and I had to spend the next four hours trying to fish it out to get this installed. I would’ve returned it, but I already spent so much time on it. It shouldn’t of left the warehouse like this. This isn’t something to happen in transit.

21.10.2022

A**H

NOT OEM REPLACEMENT

Buyer beware, with any Amazon store read description carefully if it says OEM please be sure that it is actually OEM not OEM aftermarket Chinese crap that is not make to exacting specifications and they make up the difference in adapters or gaskets. READ DESCRIPTIONS CAREFULLY they can be deceptive and make you think that you are buying OEM when it is actually NOT. I will not use this seller again for this reason, deceptive description.

7.07.2021

C**S

Don't buy

Bolts that master cylinder screw on were loose inside of booster rolling around.

13.02.2025

T**N

Cheaply made, doesn’t fit as described

Cheaply made won’t fit as described and they wouldn’t refund. Wouldn’t recommend any products

13.08.2024

A**A

غير مطابق للوصف

غير مطابق للوصف ولا يشمل عملية الارجاع

8.09.2025

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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8837972₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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The delivery time was excellent, and the packaging was secure.

2 months ago

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