Make sure this part fits

GM 84164397
Brake Booster

2009 GM

Customer Questions & Expert Answers (2)
GM 84164397 Brake Booster
  • Part Description
    Booster, Hydraulic Power Brake Booster
  • Replaces
    25828525
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number84164397
    Part DescriptionBooster, Hydraulic Power Brake Booster
    Other NamesBooster Assembly
    Item Dimensions13.5 x 12.4 x 12.4 inches
    Item Weight8.50 Pounds
    ConditionNew
    Replaces25828525
    ManufacturerGeneral Motors
    SKU84164397
    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 Trim Engine
    2009 Chevrolet TrailblazerLT, SS6 Cyl 4.2 L GAS, 8 Cyl 6.0 L GAS
    2009 GMC EnvoySLE, SLT6 Cyl 4.2 L GAS
  • Customer Questions & Expert Answers

    Q:
    Is 84164397 compatible with my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 84164397 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the power vacuum brake booster on Chevrolet Trailblazer? Posted by Customer
    A:
    To install the new Brake Booster start with applying the parking brake lever and build up vacuum by pressing then releasing the Brake Pedal until it becomes solid. Detach the vacuum sensor power Brake Booster connection first then remove the master cylinder nuts without breaking the pipe connectors. Lift the master cylinder out of the booster while holding it upright with wire support. Detach the vacuum Brake Booster and check valve from the power vacuum Brake Booster by first removing the master cylinder o-ring seal. Take out the power vacuum Brake Booster by first removing its stoplamp switch and nuts. First put the vacuum Brake Booster in place and secure it through the nuts while tightening them to 36 nm (27 lb ft). Install the stoplamp switch afterward by connecting the vacuum Brake Booster and check valve assembly to the power unit while applying denatured alcohol as needed for lubrication except when soap is required. Fit the master cylinder against the power vacuum Brake Booster and guide the o-ring inside its body. Then apply the master cylinder nuts and torque them to 36 nm (27 lb ft). Close the electrical connection to the vacuum sensor on the power Brake Booster if it has one.
    Posted by ChevyPartsGiant Specialist
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM 84164397, Excellent Performance and Perfect Fitment

To ensure reliability, purchase GM part # 84164397 Brake Booster. It is sometimes referred to as GM Brake Booster. Choosing OEM parts is the optimal decision for guaranteeing superior quality and perfect performance. These components undergo stringent quality checks and are carefully constructed to comply with GM's factory specifications, ensuring a smooth installation process.

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