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GM 19420798
Master Cylinder

2009-2014 GM

Customer Questions & Expert Answers (5)
GM 19420798 Master Cylinder
  • Part Description
    Cylinder, Brake Master Cylinder
  • Replaced By
    19432757
  • Manufacturer
    General Motors
Make sure this part fits
$153.44 MSRP: $297.80
You Save: $144.36 (49%)
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  • 19420798 Master Cylinder is Ref No. 7 in the diagram below

    2009 Chevy Silverado 1500 Master Cylinder Diagram for 19420798
    The diagram listed above is for your reference. View diagram for your vehicle

    Related Parts for 19420798

  • Vehicle Fitment

    Year Make Model Trim Engine
    2009-2014 Cadillac EscaladeBase, Luxury, Platinum, Premium8 Cyl 6.2 L FLEX
    2009-2014 Cadillac Escalade ESVBase, Luxury, Platinum, Premium8 Cyl 6.2 L FLEX
    2009-2013 Cadillac Escalade EXTBase, Luxury, Premium8 Cyl 6.2 L FLEX
    2009-2013 Chevrolet AvalancheBlack Diamond LS, Black Diamond LT, Black Diamond LTZ, LS, LT, LTZ8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
    2009-2013 Chevrolet Silverado 1500Hybrid, LS, LT, LTZ, WT, XFE6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX
    2009-2014 Chevrolet Suburban 1500LS, LT, LTZ8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
    2009-2013 Chevrolet Suburban 2500LS, LT8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    2009-2014 Chevrolet TahoeLS, LT, LTZ8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L FLEX
    2009-2013 GMC Sierra 1500Denali, Hybrid, SL, SLE, SLT, WT, XFE6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX
    2009-2014 GMC YukonDenali, SLE, SLT8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L FLEX
    View More
    Warning: California's Proposition 65

  • Customer Questions & Expert Answers

    Q:
    Is this 19420798 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 19420798 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the brake master cylinder in a two-mode hybrid on Cadillac Escalade? Posted by Customer
    A:
    The Brake Master Cylinder replacement process for a two-mode hybrid vehicle requires you to turn off the ignition without stopping at accessory mode and wait 1 to 3 minutes while avoiding brake pedal use to let the brake modulator and hpa bleed pressure. When enough time has passed you should take brake fluid from the Brake Master Cylinder reservoir and place it in a permitted container. Unplug the Brake Fluid Level Sensor connector and easily detach the Brake Master Cylinder reservoir by disconnecting both return and supply hoses. Separate the primary brake pipe from the system by capping it while plugging the master cylinder outlet. Repeating this process, disconnect all brake brake pipe fittings on the left and right side including the front fittings. Then detach the Brake Master Cylinder by discarding and installing the new parts. Take off the Brake Master Cylinder nuts and throw them away. Afterwards pull out both the Brake Master Cylinder and master cylinder seal. Bleed the master cylinder before you put the master cylinder seal and master cylinder onto the adapter while making sure the seal bottoms out. Use 2 new Brake Master Cylinder nuts to fasten the unit at 33 nm (24 lb ft). Use a torque wrench to secure the left and right front brake pipe fittings, right supply brake pipe fitting, left supply brake pipe fitting, and primary brake pipe fitting to 30 nm (22 lb ft). Fasten back the Brake Master Cylinder reservoir return hose quick connect and supply hose quick connect accessory. Then secure the Brake Fluid Level Sensor electric plug. Add brake fluid to the master cylinder tank then perform a brake system hydraulic bleeding process.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the brake master cylinder (JD9) or the two-mode hybrid master cylinder on Cadillac Escalade? Posted by Customer
    A:
    Before replacing the Brake Master Cylinder (JD9) or two-mode hybrid master cylinder you must turn the ignition off and leave it there without depressing the brake pedal. Then take out the brake fluid from the reservoir and place it in authorized storage. Unplug the brake fluid sensor electrical connection and separate both ends of the Brake Master Cylinder hose assembly. Position them on the side. To avoid fluid leaks tap the brake pipe primary fitting before sealing it with covers while also sealing the master cylinder outlet port. Repeat this process by disconnecting the left supply brake pipe fitting , right supply brake pipe fitting , right front brake pipe fitting , and left front brake pipe fitting , each with corresponding covers and seals. Seize off the Brake Master Cylinder nuts and remove them before pulling out the Brake Master Cylinder along with its master cylinder seal. To install the cylinder slide the Brake Master Cylinder seal onto its adapter first before placing the assembly with a properly seated seal onto the adapter. Use new master cylinder nuts and secure them to 33 nm (24 lb ft) torque setting. Fix the assembled brake connections between left front, right front, right supply, left supply, and primary brake lines with a torque of 30 nm. Join the Brake Master Cylinder reservoir return hose quick connect back to the supply hose quick connect then attach the Brake Fluid Level Sensor electrical connector. Put fluid in the Brake Master Cylinder reservoir then remove air from the hydraulic brake system.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the brake master cylinder in a two-mode hybrid on GMC Yukon? Posted by Customer
    A:
    The Brake Master Cylinder replacement process for a two-mode hybrid vehicle requires you to turn off the ignition without stopping at accessory mode and wait 1 to 3 minutes while avoiding brake pedal use to let the brake modulator and hpa bleed pressure. When enough time has passed you should take brake fluid from the Brake Master Cylinder reservoir and place it in a permitted container. Unplug the Brake Fluid Level Sensor connector and easily detach the Brake Master Cylinder reservoir by disconnecting both return and supply hoses. Separate the primary brake pipe from the system by capping it while plugging the master cylinder outlet. Repeating this process, disconnect all brake brake pipe fittings on the left and right side including the front fittings. Then detach the Brake Master Cylinder by discarding and installing the new parts. Take off the Brake Master Cylinder nuts and throw them away. Afterwards pull out both the Brake Master Cylinder and master cylinder seal. Bleed the master cylinder before you put the master cylinder seal and master cylinder onto the adapter while making sure the seal bottoms out. Use 2 new Brake Master Cylinder nuts to fasten the unit at 33 nm (24 lb ft). Use a torque wrench to secure the left and right front brake pipe fittings, right supply brake pipe fitting, left supply brake pipe fitting, and primary brake pipe fitting to 30 nm (22 lb ft). Fasten back the Brake Master Cylinder reservoir return hose quick connect and supply hose quick connect accessory. Then secure the Brake Fluid Level Sensor electric plug. Add brake fluid to the master cylinder tank then perform a brake system hydraulic bleeding process.
    Posted by ChevyPartsGiant Specialist
    Q:
    What is the procedure for installing the new brake master cylinder for the 2009 Chevrolet Silverado 1500? Posted by Customer
    A:
    Bench bleed the master cylinder, then install the brake master cylinder seal ensuring it is fully seated, followed by the master cylinder to the adapter.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Brake Master Cylinder
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM Master Cylinder 19420798 Designed for Proper Fit and Performance

Original OEM GM parts deliver superior quality and meet all performance standards needed for optimal automotive operation. The authentic part identified by 19420798 Master Cylinder is available in the market under the name GM Brake Master Cylinder. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 19420798 Master Cylinder fits certain Chevrolet Tahoe, Avalanche, Silverado 1500 models, as well as GMC Sierra 1500, Yukon, Yukon XL 1500. Additionally, it is compatible with Cadillac Escalade, Escalade ESV, Escalade EXT models.
The original GM component designated by manufacturer part number 19420798 maintains top performance when functioning as the Cylinder, Brake Master Cylinder unit. The component 19420798 is constructed from durable material. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. This component receives the designation of Brake Master Cylinder. The part 19420798 has available replacement options listed under 19432757. GM manufacturer provides a warranty that ensures reliable operation of this product. The Shipping Policy and Return Policy pages outline complete details regarding shipping procedures and return processes.
If you want to save money in the long run on maintenance and repairs, you should choose OEM products because they're of the top level of durability. Are you on the quest of finding GM parts, our site is worth a visit. We stock an endless selection of high-quality GM components including things like ignition coils all the way through to fan shrouds and all at prices that can not be matched. You have nothing to worry about because all our OEM parts are covered with a manufacturer warranty, which guarantees superior quality and value.