How to replace the brake master cylinder (JD9, JF3, JF7; Two-Mode Hybrid) on GMC Sierra 1500?

You need to wait with the ignition off and ensure no brake pedal application for 1 to 3 minutes to drain pressures from the brake modulator and hpa before replacing the master cylinder on jd9, jf3, jf7 two-mode hybrid models. Once you have waited pressurize the system take the brake fluid out of the reservoir and put it in a permitted storage tank. Untwist the Brake Fluid Level Sensor wiring connection then disconnect the Brake Master Cylinder reservoir return hose and supply hose using quick connects and place them off to the side. Separate and seal the primary brake tube connection and also seal the left right and front brake line fittings. Detach the Brake Master Cylinder nuts from the system and replace them, then remove the Brake Master Cylinder including the master cylinder seal. Before mounting insert the Brake Master Cylinder seal deeply into position before you put in the master cylinder to the adaptor. Put on 2 new Brake Master Cylinder nuts and apply torque to 33 nm (24 lb ft). You should join all brake fittings from left front, right front, right supply, left supply, and primary brake systems. Tighten the connections to 30 nm (22 lb ft). Rejoin the Brake Master Cylinder reservoir return hose quick connector and supply hose quick connector. Also add the Brake Fluid Level Sensor electrical connection. Put fluid in the master brake cylinder reservoir and take fluid out of the hydraulic brake system for testing.

How to replace the brake master cylinder (J92) on GMC Yukon?

You must disable the vehicle ignition before you begin replacing the Brake Master Cylinder (J92). Discard the brake fluid that has been removed from the Brake Master Cylinder reservoir into an approved waste container. Connectors for the Brake Fluid Level Sensor and both supply and return hoses for the master cylinder reservoir require removal before positioning the hoses to the side. Cap the primary brake pipe fitting while you disconnect it to block fluid escape and master cylinder port contamination. Perform the capping and plugging procedure on the left supply brake pipe fitting followed by the right supply brake pipe fitting then right front brake pipe fitting and finally left front brake pipe fitting . Pull out the Brake Master Cylinder nuts and get rid of them before removing the Brake Master Cylinder and the master cylinder seal . During installation you should bench bleed the master cylinder before safely securing the Brake Master Cylinder seal within the adapter while ensuring every part of the seal fully anchors itself into place. Place two new Brake Master Cylinder nuts and torque them to 33 n.m (24 lb ft). Tighten all connections using a torque of 30 n.m (22 lb ft) following installation of left front brake pipe fitting , right front brake pipe fitting , right supply brake pipe fitting and left supply brake pipe fitting and primary brake pipe fitting . Reconnect the Brake Master Cylinder reservoir return hose quick connect followed by the supply hose quick connect and the Brake Fluid Level Sensor electrical connector. Complete reservoir filling and continue with bleeding the hydraulic brake system.

OEM GMC Brake Master Cylinder

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82 Brake Master Cylinders found

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GMC Master Cylinder Part Number: 20925765
$78.63 MSRP: $147.66
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaced by: 84822232
Fits the following GMC Models:
- Sierra 1500 | 2014-2019 | AT4, Base, Denali, Elevation, SLE, SLT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 5.3 L MILD HYBRID EV-GAS (MHEV), 8 Cyl 6.2 L GAS
- Sierra 1500 Limited | 2019 | Base, SLE | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Yukon | 2015-2020 | Denali, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
- Yukon XL | 2015-2020 | Denali, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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GMC Master Cylinder Part Number: 19151463
$85.41 MSRP: $240.49
You Save: $155.08 (65%)
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Product Specifications
- Other Name: Cylinder Kit, Brake Master; Brake Master Cylinder; Cylinder Kit, Brake Master Cylinder
Fits the following GMC Models:
- Terrain | 2010 | SLE, SLT | 4 Cyl 2.4 L GAS, 6 Cyl 3.0 L GAS
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GMC Master Cylinder Part Number: 25805646
$142.12 MSRP: $285.22
You Save: $143.10 (51%)
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaced by: 84744483
Fits the following GMC Models:
- Acadia | 2007-2008 | SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Master Cylinder Part Number: 84939473
$98.71 MSRP: $185.38
You Save: $86.67 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder
Fits the following GMC Models:
- Sierra 2500 HD | 2022-2024 | AT4, AT4X, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
- Sierra 3500 HD | 2022-2024 | AT4, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL, 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
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GMC Modulator Valve Part Number: 86820497
$878.99 MSRP: $1650.68
You Save: $771.69 (47%)
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Booster Assembly
- Replaced by: 85798382
Fits the following GMC Models:
- Hummer EV Pickup | 2023 | 3X | BATTERY EV (EV/BEV)
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GMC Master Cylinder Assembly Part Number: 18039263
$165.67 MSRP: $297.16
You Save: $131.49 (45%)
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
Fits the following GMC Models:
- Savana 1500 | 1996-2002 | Base, SLE, SLT | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
- Savana 2500 | 1996-2002 | Base, SLE, SLT | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L BI-FUEL, 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
- Savana 3500 | 1996-2002 | Base, SLE, SLT | 6 Cyl 4.3 L GAS, 8 Cyl 5.7 L BI-FUEL, 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS, 8 Cyl 8.1 L GAS
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GMC Master Cylinder Part Number: 84764333
$74.48 MSRP: $134.80
You Save: $60.32 (45%)
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Product Specifications
- Other Name: Cylinder Kit, Brake Master Cylinder; Brake Master Cylinder
- Replaced by: 85567341
Fits the following GMC Models:
- Canyon | 2021-2022 | AT4, Denali, Elevation, Elevation Standard | 4 Cyl 2.5 L GAS, 4 Cyl 2.8 L DIESEL, 6 Cyl 3.6 L GAS
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GMC Master Cylinder Part Number: 19432944
$156.87 MSRP: $281.38
You Save: $124.51 (45%)
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder
- Replaced by: 19432746
Fits the following GMC Models:
- Sierra 1500 | 2007-2008 | Denali, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
- Yukon | 2007-2008 | Denali, Hybrid, SLE, SLT | 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-GAS (FHEV), 8 Cyl 6.2 L GAS
- Yukon XL 1500 | 2007-2008 | Denali, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
- Yukon XL 2500 | 2007-2008 | SLE, SLT | 8 Cyl 6.0 L GAS
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GMC Master Cylinder Part Number: 19417194
$85.99 MSRP: $236.37
You Save: $150.38 (64%)
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder
- Replaced by: 19432750
Fits the following GMC Models:
- Canyon | 2009-2012 | SLE, SLT, WT | 4 Cyl 2.9 L GAS, 5 Cyl 3.7 L GAS, 8 Cyl 5.3 L GAS
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GMC Master Cylinder Assembly Part Number: 19236088
$127.50 MSRP: $228.70
You Save: $101.20 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 89056525
Fits the following GMC Models:
- Savana 1500 | 1996-2002 | Base, SLE, SLT | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
- Savana 2500 | 1996-2002 | Base, SLE, SLT | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L BI-FUEL, 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
- Savana 3500 | 1996-2002 | Base, SLE, SLT | 6 Cyl 4.3 L GAS, 8 Cyl 5.7 L BI-FUEL, 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS, 8 Cyl 8.1 L GAS
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GMC Master Cylinder Part Number: 85543518
$1227.26 MSRP: $2394.64
You Save: $1167.38 (49%)
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Master Cylinder Assembly
- Replaces: 84926393, 85124747
Fits the following GMC Models:
- Yukon | 2021-2022 | AT4, Denali, SLE, SLT | 6 Cyl 3.0 L DIESEL, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
- Yukon XL | 2021-2023 | AT4, Denali, SLE, SLT | 6 Cyl 3.0 L DIESEL, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
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GMC Master Cylinder Part Number: 19432946
$169.94 MSRP: $307.58
You Save: $137.64 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder
- Replaced by: 19432748
Fits the following GMC Models:
- Sierra 1500 | 2008-2009 | Denali, Hybrid, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 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-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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GMC Modulator Valve Part Number: 85548003
$860.94 MSRP: $1360.74
You Save: $499.80 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Booster Assembly
Fits the following GMC Models:
- Hummer EV Pickup | 2022-2023 | 3X, Edition 1 | BATTERY EV (EV/BEV)
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GMC Overhaul Kit Part Number: 18007935
Product Specifications
- Other Name: Cylinder Kit, Brake Master Cylinder; Master Cylinder Repair Kit
Fits the following GMC Models:
- C1500 | 1991-1993 | Sierra, Sierra SLE, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- C1500 Suburban | 1992-1993 | Base, SLE | 8 Cyl 5.7 L GAS
- C2500 | 1991-1993 | Sierra, Sierra SLE, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- C2500 Suburban | 1992-1993 | Base, SLE | 8 Cyl 5.7 L GAS, 8 Cyl 7.4 L GAS
- K1500 | 1991-1993 | Sierra, Sierra SLE, Sierra SLX, Sierra Sport | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- K1500 Suburban | 1992-1993 | Base, SLE | 8 Cyl 5.7 L GAS
- K2500 | 1991-1993 | Sierra, Sierra SLE, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
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GMC Overhaul Kit Part Number: 19209252
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Cylinder Kit, Brake Master Cylinder
- Replaces: 18048541, 18040253
Fits the following GMC Models:
- Sierra 1500 | 1999-2002 | Base, C3, Denali, HT, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Sierra 1500 HD | 2001-2002 | SLE, SLT | 8 Cyl 6.0 L GAS
- Sierra 2500 | 1999-2002 | Base, SL, SLE, SLT | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
- Sierra 2500 HD | 2001-2002 | Base, SL, SLE, SLT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Sierra 3500 | 2001-2002 | Base, SL, SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Yukon | 2000-2002 | Denali, SLE, SLT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Yukon XL 1500 | 2000-2002 | Denali, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Yukon XL 2500 | 2000-2002 | SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
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GMC Master Cylinder Part Number: 84749956
$72.76 MSRP: $129.92
You Save: $57.16 (44%)
Product Specifications
- Other Name: Cylinder Kit, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 23234982, 84367261
Fits the following GMC Models:
- Canyon | 2015-2020 | All Terrain, Base, Denali, SL, SLE, SLT | 4 Cyl 2.5 L GAS, 4 Cyl 2.8 L DIESEL, 6 Cyl 3.6 L GAS
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GMC Master Cylinder Part Number: 19417223
$163.38 MSRP: $293.06
You Save: $129.68 (45%)
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder
- Replaces: 25828524, 84164395
Fits the following GMC Models:
- Envoy | 2009 | Denali, SLE, SLT | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
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GMC Master Cylinder Part Number: 19420964
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 15935842, 15935843
Fits the following GMC Models:
- Sierra 2500 HD | 2009-2014 | Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
- Sierra 3500 HD | 2009-2014 | Denali, SLE, SLT, WT | 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
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GMC Master Cylinder Part Number: 19420993
$152.24 MSRP: $273.08
You Save: $120.84 (45%)
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Brake Master Cylinder
- Replaces: 25809241
Fits the following GMC Models:
- Savana 1500 | 2009-2010 | Base, LS, LT | 6 Cyl 4.3 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
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GMC Master Cylinder Part Number: 86804795
$964.87 MSRP: $1738.50
You Save: $773.63 (45%)
Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Master Cylinder Assembly
- Replaces: 84933516, 85124317, 84719299, 85534582, 85000376, 84836018
Fits the following GMC Models:
- Acadia | 2020-2022 | Denali, SLE, SLT | 4 Cyl 2.0 L GAS

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GMC Brake Master Cylinder

Choose OEM Brake Master Cylinder, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with GMC's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM GMC Brake Master Cylinder. You can shop at highly competitive prices and protect your budget. All our genuine GMC parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

GMC Brake Master Cylinder makes your foot pressure a sure source of hydraulic stopping power every drive. In the urban streets or tough backroads, GMC pickups and SUVs have hale-bones that shake off their hefty loads without disturbing the cabins. Drivers enjoy the way GMC balances no-frills muscle and tricks such as the MultiPro tailgate and crisp surround vision warnings. Hydro-formed strong rails cannot be twisted, and therefore the towing equipment and cargo in the bed remain stable even during the uneven climbs. The presence of high ground clearance also ensures that these rigs can navigate rocky trails without scratching important hardware or flexing the angle of the drive line. Mounts on the body are rigid, resulting in vibration reduction; door seals layered to reduce wind noise ensure conversations remain clear. Include regular quality inspections throughout a one hundred year history of manufacturing and the badge continues to gain the confidence of both the families and the job crews. The Brake Master Cylinder inside the firewall will change your pedal push into a pressurized fluid which flows through two hydraulic circuits splitting diagonally with braking still available on opposite corners. Upon the next stomping, the Brake Master Cylinder increases force and supplies the calipers or drum shoes and also pushes the clutch slave to uncouple gears providing smooth stops and shifts regardless of the load. Both fluid paths remain in short to reduce fade on prolonged downhill slopes.

GMC Brake Master Cylinder Parts and Q&A

Master Cylinder
19420798
Q: How to replace the brake master cylinder (JD9, JF3, JF7; Two-Mode Hybrid) on GMC Sierra 1500?
A:
You need to wait with the ignition off and ensure no brake pedal application for 1 to 3 minutes to drain pressures from the brake modulator and hpa before replacing the master cylinder on jd9, jf3, jf7 two-mode hybrid models. Once you have waited pressurize the system take the brake fluid out of the reservoir and put it in a permitted storage tank. Untwist the Brake Fluid Level Sensor wiring connection then disconnect the Brake Master Cylinder reservoir return hose and supply hose using quick connects and place them off to the side. Separate and seal the primary brake tube connection and also seal the left right and front brake line fittings. Detach the Brake Master Cylinder nuts from the system and replace them, then remove the Brake Master Cylinder including the master cylinder seal. Before mounting insert the Brake Master Cylinder seal deeply into position before you put in the master cylinder to the adaptor. Put on 2 new Brake Master Cylinder nuts and apply torque to 33 nm (24 lb ft). You should join all brake fittings from left front, right front, right supply, left supply, and primary brake systems. Tighten the connections to 30 nm (22 lb ft). Rejoin the Brake Master Cylinder reservoir return hose quick connector and supply hose quick connector. Also add the Brake Fluid Level Sensor electrical connection. Put fluid in the master brake cylinder reservoir and take fluid out of the hydraulic brake system for testing.
Master Cylinder
19432944
Q: How to replace the brake master cylinder (J92) on GMC Yukon?
A:
You must disable the vehicle ignition before you begin replacing the Brake Master Cylinder (J92). Discard the brake fluid that has been removed from the Brake Master Cylinder reservoir into an approved waste container. Connectors for the Brake Fluid Level Sensor and both supply and return hoses for the master cylinder reservoir require removal before positioning the hoses to the side. Cap the primary brake pipe fitting while you disconnect it to block fluid escape and master cylinder port contamination. Perform the capping and plugging procedure on the left supply brake pipe fitting followed by the right supply brake pipe fitting then right front brake pipe fitting and finally left front brake pipe fitting . Pull out the Brake Master Cylinder nuts and get rid of them before removing the Brake Master Cylinder and the master cylinder seal . During installation you should bench bleed the master cylinder before safely securing the Brake Master Cylinder seal within the adapter while ensuring every part of the seal fully anchors itself into place. Place two new Brake Master Cylinder nuts and torque them to 33 n.m (24 lb ft). Tighten all connections using a torque of 30 n.m (22 lb ft) following installation of left front brake pipe fitting , right front brake pipe fitting , right supply brake pipe fitting and left supply brake pipe fitting and primary brake pipe fitting . Reconnect the Brake Master Cylinder reservoir return hose quick connect followed by the supply hose quick connect and the Brake Fluid Level Sensor electrical connector. Complete reservoir filling and continue with bleeding the hydraulic brake system.