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84397946 Genuine GM Brake Master Cylinder For Silverado Express Savana
84397946 Genuine GM Brake Master Cylinder For Silverado Express Savana

84397946 Genuine GM Brake Master Cylinder For Silverado Express Savana

P/N: 84397946 Manufactured by: GM
$220.00 - $220.00
$220.00
$220.00 - $220.00
$220.00
4 in Stock
Condition: New
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Description

The 84397946 is a genuine GM brake master cylinder designed for select 2009–2019 Chevrolet and GMC trucks and vans. It creates the hydraulic force needed to operate the factory brake system, delivering steady brake pedal response and consistent pressure to the wheel braking components during normal and heavy-duty driving.

Vehicle Compatibility

Year Vehicle Engine Trims
2019 Chevrolet Express 2500 2.8L L4 Diesel, 4.3L V6 Flex, 4.3L V6 Gas, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas Base, LS, LT
2019 GMC Savana 2500 2.8L L4 Diesel, 4.3L V6 Flex, 4.3L V6 Gas, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas Base, LS, LT
2018 Chevrolet Express 2500 2.8L L4 Diesel, 4.3L V6 Flex, 4.3L V6 Gas, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas Base, LS, LT
2018 Chevrolet Express 3500 2.8L L4 Diesel, 4.3L V6 Flex, 4.3L V6 Gas, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas Base, LS, LT
2018 Chevrolet Express 4500 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas Base
2018 GMC Savana 2500 2.8L L4 Diesel, 4.3L V6 Flex, 4.3L V6 Gas, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas Base, LS, LT
2018 GMC Savana 3500 2.8L L4 Diesel, 4.3L V6 Flex, 4.3L V6 Gas, 6.0L V8 CNG, 6.0L V8 Flex Base
2017 Chevrolet Express 2500 2.8L L4 Diesel, 4.8L V8 Flex, 6.0L V8 Flex, 6.0L V8 Gas Base, LS, LT
2017 Chevrolet Express 3500 2.8L L4 Diesel, 4.8L V8 Flex, 6.0L V8 Flex, 6.0L V8 Gas Base, LS, LT
2017 Chevrolet Express 4500 6.0L V8 Flex, 6.0L V8 Gas Base
2017 GMC Savana 2500 2.8L L4 Diesel, 4.8L V8 Flex, 6.0L V8 Flex, 6.0L V8 Gas Base, LS, LT
2017 GMC Savana 3500 2.8L L4 Diesel, 4.8L V8 Flex, 6.0L V8 Flex Base
2016 Chevrolet Express 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2016 Chevrolet Express 3500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2016 Chevrolet Express 4500 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel Base
2016 GMC Savana 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2016 GMC Savana 3500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex Base
2015 Chevrolet Express 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2015 Chevrolet Express 3500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2015 Chevrolet Express 4500 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base
2015 GMC Savana 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2015 GMC Savana 3500 4.8L V8 Flex, 6.0L V8 Flex Base
2014 Chevrolet Express 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2014 Chevrolet Express 3500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2014 Chevrolet Express 4500 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base
2014 Chevrolet Silverado 2500 HD 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2014 Chevrolet Silverado 3500 HD 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2014 GMC Savana 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2014 GMC Savana 3500 4.8L V8 Flex, 6.0L V8 Flex Base
2013 Chevrolet Express 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2013 Chevrolet Express 3500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2013 Chevrolet Express 4500 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base
2013 Chevrolet Silverado 2500 HD 6.0L V8 CNG, 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2013 Chevrolet Silverado 3500 HD 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2013 Chevrolet Suburban 2500 6.0L V8 Flex LS, LT
2013 GMC Savana 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2013 GMC Savana 3500 4.8L V8 Flex, 6.0L V8 Flex Base
2012 Chevrolet Express 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2012 Chevrolet Express 3500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2012 Chevrolet Express 4500 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base
2012 Chevrolet Silverado 2500 HD 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2012 Chevrolet Silverado 3500 HD 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2012 Chevrolet Suburban 2500 6.0L V8 Flex LS, LT
2012 GMC Savana 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2012 GMC Savana 3500 4.8L V8 Flex, 6.0L V8 Flex Base
2011 Chevrolet Express 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2011 Chevrolet Express 3500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2011 Chevrolet Express 4500 6.0L V8 Flex, 6.6L V8 Diesel Base
2011 Chevrolet Silverado 2500 HD 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2011 Chevrolet Silverado 3500 HD 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2011 Chevrolet Suburban 2500 6.0L V8 Flex LS, LT
2011 GMC Savana 2500 4.8L V8 Flex, 6.0L V8 CNG, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2011 GMC Savana 3500 4.8L V8 Flex, 6.0L V8 Flex Base
2010 Chevrolet Express 2500 4.8L V8 Flex, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2010 Chevrolet Express 3500 4.8L V8 Flex, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2010 Chevrolet Express 4500 6.0L V8 Flex, 6.6L V8 Diesel Base
2010 Chevrolet Silverado 2500 HD 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2010 Chevrolet Silverado 3500 HD 6.0L V8 Flex, 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2010 Chevrolet Suburban 2500 6.0L V8 Flex LS, LT
2010 GMC Savana 2500 4.8L V8 Flex, 6.0L V8 Flex, 6.6L V8 Diesel Base, LS, LT
2010 GMC Savana 3500 4.8L V8 Flex Base
2009 Chevrolet Express 2500 4.8L V8 Gas, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2009 Chevrolet Express 3500 4.8L V8 Gas, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2009 Chevrolet Express 4500 6.0L V8 Gas, 6.6L V8 Diesel Base
2009 Chevrolet Silverado 2500 HD 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2009 Chevrolet Silverado 3500 HD 6.0L V8 Gas, 6.6L V8 Diesel LT, LTZ, WT
2009 Chevrolet Suburban 1500 6.0L V8 Gas LT, LTZ
2009 Chevrolet Suburban 2500 6.0L V8 Gas LS, LT
2009 GMC Savana 2500 4.8L V8 Gas, 6.0L V8 Gas, 6.6L V8 Diesel Base, LS, LT
2009 GMC Savana 3500 4.8L V8 Gas, 6.0L V8 Gas Base


General Specifications

Condition New
Part Number 84397946
Brand GM
Part Type Brake Master Cylinder
Years 2009–2019
Vehicle Chevrolet Express, Express HD, Silverado 2500 HD, Silverado 3500 HD, Suburban 1500, Suburban 2500, GMC Savana
Engine Compatibility 2.8L L4 Diesel, 4.3L V6, 4.8L V8, 6.0L V8, 6.6L V8 Diesel
Fitment Type Direct Replacement


Product Features

The 84397946 brake master cylinder is built to match factory performance and installation requirements:

  • Produces the hydraulic pressure required for dependable brake system operation across compatible GM applications
  • Designed with factory-correct brake line ports and mounting locations for proper installation
  • Compatible with selected gasoline, Flex Fuel, CNG, and diesel truck and van models listed for this application
  • Maintains consistent hydraulic pressure to support balanced braking performance under varying driving conditions
  • Manufactured to GM engineering specifications for long-lasting durability and reliable brake system function

Application Notes

The 84397946 is intended for vehicles equipped with the factory hydraulic brake system specified for the listed applications. Flush contaminated brake fluid if necessary, bleed the hydraulic system completely, and inspect for leaks before returning the vehicle to service.

Always verify the part number, VIN, brake system configuration, engine application, and hydraulic connections before installation.

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