Make sure this part fits

Chevrolet 84474523 Brake Booster

2012-2024 Chevrolet Express

Customer Questions & Expert Answers (4)
84474523 GM Brake Booster Illustration 1 of 1
  • Part Description
    Booster, Hydraulic Power Brake Booster
  • Replaces
    22869378, 84031702, 22800156
  • Manufacturer
    General Motors
Make sure this part fits
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number84474523
    Part DescriptionBrake Booster; Booster, Hydraulic Power Brake Booster
    Item Dimensions21.9 x 13.3 x 10.4 inches
    Item Weight14.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces22869378, 84031702, 22800156
    ManufacturerGeneral Motors
    SKU84474523
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2012-2024 Chevrolet Express4 Cyl 2.8L Diesel, 6 Cyl 4.3L, 8 Cyl 4.8L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.6L, 8 Cyl 6.6L Diesel1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS, Van 3/4 Ton Cargo Express
  • Customer Questions & Expert Answers

    Q:
    Do these parts fit my vehicle?
    A:
    You can Select Your Vehicle to check if 84474523 fits your vehicle.
    Posted and answered by GM Parts Specialist Raul
    Q:
    How do you perform an airtightness check for the Brake Booster on the 2018 Chevrolet Express? Posted by Quinten G.
    A:
    Start the engine and turn it off after a minute or two. Slowly depress the brake pedal several times and observe if the pedal goes down farther initially but gradually rises after subsequent depressions. Additionally, depress the brake pedal while the engine is running and stop the engine while keeping the pedal depressed. If there is no change in the pedal reserve travel after holding it for 30 seconds, the booster is airtight. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / Dec 03, 2025
    Q:
    How do you perform an airtightness check of the 2012 GMC Savana, including the Brake Booster? Posted by Verified Customer
    A:
    Start the engine and turn it off after a minute or two. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Syed / Feb 12, 2024
    Q:
    Is this unit brand New or remanufacted? Posted by Jose G. / 2015 Light Truck Express / Savana (2WD)
    A:
    New
    Answered by GM Parts Specialist Raul / Oct 02, 2024

Genuine GM Part 84474523, the Right Choice

To ensure reliability, purchase GM part # 84474523 Brake Booster. It is sometimes referred to as Chevrolet Brake Booster. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Chevrolet Express models.

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