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GM 84158514 Power Brake Booster ASSEMBLY

Customer Questions & Expert Answers (3)
GM 84158514 Power Brake Booster ASSEMBLY
  • Part Description
    Booster Assembly, Power Brake
  • Replaced By
    19432799
  • Manufacturer
    General Motors
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  • Product Specifications
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number84158514
    Part DescriptionBooster Assembly, Power Brake
    Other NamesBrake Booster, Power Booster
    Item Dimensions19.1 x 11.5 x 11.4 inches
    Item Weight8.00 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU84158514
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California’s Proposition 65
  • Customer Questions & Expert Answers

    Q:
    How do I perform an operating check on the brake system and remove/install the Brake Booster? Posted by Customer
    A:
    To perform an operating check on the brake system, start by depressing the brake pedal multiple times with the engine off to ensure there is no change in the pedal reserve distance. Then, depress the pedal and start the engine, noting if the pedal goes down slightly, indicating normal operation. For an air tightness check, start the engine and turn it off after a minute or two. Slowly depress the brake pedal several times, observing if the pedal goes down farther the first time but gradually rises after subsequent depressions, indicating an airtight booster. Additionally, depress the brake pedal while the engine is running and then stop the engine with the pedal depressed. If there is no change in the pedal reserve travel after holding the pedal for 30 seconds, the booster is airtight. If a problem arises, it is recommended to have a new or factory-rebuilt unit installed, as disassembly of the power unit requires special tools and is not typically performed by home mechanics. To remove the power unit, set the parking brake on a level surface and deplete any remaining vacuum in the booster by pumping the brake pedal with the ignition switch off. Then, remove the air filter housing assembly, disconnect the electrical connector at the brake fluid level sensor, and disconnect the vacuum hose and the booster. Release the brake lines from the retaining clip and lift the Brake Pressure Modulator Valve (BPMV) assembly slightly forward. Without disconnecting the brake lines, remove the two mounting nuts and position the master cylinder to the side. Under the dash, remove the driver's side instrument panel insulator cover and knee bolster, and disconnect the pushrod from the brake pedal by removing the retaining clip and clevis pin. Remove the intermediate steering shaft and the booster mounting nuts from inside. Carefully lift the booster upward to clear the mounting studs and remove it from the engine compartment. To install, reverse the removal steps, ensuring the gasket seal between the booster and dash panel is inspected and replaced if necessary, and that the O-ring is properly positioned on the master cylinder sleeve. Finally, test the operation of the brakes before returning the vehicle to normal service.
    Posted by GMPartsGiant Specialist
    Q:
    What are the steps to install the power unit back for the 2008 Buick Enclave? Posted by Customer
    A:
    To install, reverse the removal steps, making sure to inspect and replace the gasket seal between the booster and dash panel if necessary, and ensuring that the O-ring is properly positioned on the master cylinder sleeve.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Brake Booster
    Q:
    What should be done if a problem arises with the power unit for the 2007 GMC Acadia? Posted by Customer
    A:
    If a problem arises, it's recommended to have a new or factory-rebuilt unit installed, as disassembly requires special tools and is not typically performed by home mechanics.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Brake Booster
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 84158514, the Right Choice

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