How to replace the brake master cylinder on GMC Canyon?

Press and release the Brake Pedal a few times to lessen the power vacuum Brake Booster transferable vacuum during cylinder replacement. Insert a proper tool into the master cylinder reservoir to drain and dispose of its brake fluid correctly. You should clean the master cylinder parts using denatured alcohol to get rid of dirt buildup then let everything dry. Unplug the brake fluid level sensor wire connection and disconnect the master cylinder's secondary brake pipe fitting by sealing it with caps. After detaching from the master cylinder primary pipe you need to secure the brake pipe fitting with a cap and to block the master cylinder outlet port. Take the master cylinder nuts off and withdraw the master cylinder with its o-ring seal from the Brake Booster unit checking if the o-ring has issues and replacing it when required. For new master cylinders always run a bench bleed before final installation. Fold the o-ring seal into the groove of the master cylinder body before inserting it with the master cylinder onto the power vacuum Brake Booster. Fasten the master cylinder nuts at 30 nm torque (22 lb ft). Join the master cylinder primary brake hose from the outside and torque it to 17 nm (13 lb ft). Then connect the master cylinder secondary brake hose from the inside and torque it to the same torque value. Reinstall the brake fluid sensor wires before adding brake liquid into the master cylinder reservoir and conducting hydraulic brake bleeding procedures.

How to replace the brake master cylinder on GMC Envoy?

A replacement process for brake master cylinder starts by using the parking brake followed by wheel blocking. Place rubber caps or plugs on the exposed brake pipe fitting ends after you disconnect the brake pipes from the master cylinder to stop fluid loss and contamination. First install the rubber plugs before you detach the master cylinder nuts and bolts to extract the master cylinder from the vehicle. Remove all brake fluid from the master cylinder reservoir before you take away the reservoir container when needed. The master cylinder and reservoir connection should occur first after which you must fill the brake fluid reservoir before proceeding with bench bleeding of the master cylinder. Replace the master cylinder inside the vehicle by tightening its bolts and nuts to 36 N.m (27 lb ft). Attach the brake pipes to the master cylinder while tightening each pipe nut to 30 N.m (22 lb ft). Close off the hydraulic brake system through a thorough bleeding process.

How to replace the Brake Master Cylinder (Hydraulic Boost) on GMC Sierra 1500?

Wheels should be blocked by applying the park brake before replacing the Brake Master Cylinder (Hydraulic Boost). First disconnect the electrical connector from the Brake Fluid Level Sensor. Then apply rubber caps or plugs to stop brake fluid from leaking out and contaminating the brake pipe fitting ends before taking the brake pipes off the master cylinder. The process starts with plugging open brake pipe ends then removing the master cylinder mounting nuts to completely remove the master cylinder and its reservoir from the vehicle. Begin the installation process with the master cylinder reservoir followed by bench bleaching the master cylinder before reinstalling the vehicle. Follow by mounting the master cylinder with its nuts then torque them to 33 nm (24 ft. Lbs.). Begin by removing the rubber plugs or caps from the open brake pipe ends before you insert and tighten the brake pipes to 25 nm (18 ft. Lbs.). The electrical connector leads to the Brake Fluid Level Sensor at this point followed by hydraulic brake system bleaching through the lines before releasing the park brake and unblocking wheels.

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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
$83.74 MSRP: $235.77
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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
$91.59 MSRP: $285.22
You Save: $193.63 (68%)
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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
$101.77 MSRP: $181.74
You Save: $79.97 (44%)
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
$916.13 MSRP: $1650.68
You Save: $734.55 (45%)
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Product Specifications
- Other Name: Cylinder, Brake Master Cylinder; Booster Assembly
- Replaced by: 85736811
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
$184.08 MSRP: $330.18
You Save: $146.10 (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
$42.88 MSRP: $76.58
You Save: $33.70 (45%)
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Product Specifications
- Other Name: Cylinder Kit, Brake Master Cylinder; Brake Master Cylinder
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
$131.76 MSRP: $236.37
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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
Part Number: 19417223
$163.38 MSRP: $293.06
You Save: $129.68 (45%)
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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 Assembly
Part Number: 19236088
$141.66 MSRP: $254.10
You Save: $112.44 (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
$1199.08 MSRP: $2347.68
You Save: $1148.60 (49%)
Ships in 1-3 Business Days
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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
$158.48 MSRP: $307.58
You Save: $149.10 (49%)
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
$71.33 MSRP: $127.38
You Save: $56.05 (44%)
Ships in 1-2 Business Days
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: 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 Parts Questions & Experts Answers

Master Cylinder
19417194
Q: How to replace the brake master cylinder on GMC Canyon?
A: Press and release the Brake Pedal a few times to lessen the power vacuum Brake Booster transferable vacuum during cylinder replacement. Insert a proper tool into the master cylinder reservoir to drain and dispose of its brake fluid correctly. You should clean the master cylinder parts using denatured alcohol to get rid of dirt buildup then let everything dry. Unplug the brake fluid level sensor wire connection and disconnect the master cylinder's secondary brake pipe fitting by sealing it with caps. After detaching from the master cylinder primary pipe you need to secure the brake pipe fitting with a cap and to block the master cylinder outlet port. Take the master cylinder nuts off and withdraw the master cylinder with its o-ring seal from the Brake Booster unit checking if the o-ring has issues and replacing it when required. For new master cylinders always run a bench bleed before final installation. Fold the o-ring seal into the groove of the master cylinder body before inserting it with the master cylinder onto the power vacuum Brake Booster. Fasten the master cylinder nuts at 30 nm torque (22 lb ft). Join the master cylinder primary brake hose from the outside and torque it to 17 nm (13 lb ft). Then connect the master cylinder secondary brake hose from the inside and torque it to the same torque value. Reinstall the brake fluid sensor wires before adding brake liquid into the master cylinder reservoir and conducting hydraulic brake bleeding procedures.
Master Cylinder
19209266
Q: How to replace the brake master cylinder on GMC Envoy?
A: A replacement process for brake master cylinder starts by using the parking brake followed by wheel blocking. Place rubber caps or plugs on the exposed brake pipe fitting ends after you disconnect the brake pipes from the master cylinder to stop fluid loss and contamination. First install the rubber plugs before you detach the master cylinder nuts and bolts to extract the master cylinder from the vehicle. Remove all brake fluid from the master cylinder reservoir before you take away the reservoir container when needed. The master cylinder and reservoir connection should occur first after which you must fill the brake fluid reservoir before proceeding with bench bleeding of the master cylinder. Replace the master cylinder inside the vehicle by tightening its bolts and nuts to 36 N.m (27 lb ft). Attach the brake pipes to the master cylinder while tightening each pipe nut to 30 N.m (22 lb ft). Close off the hydraulic brake system through a thorough bleeding process.
Master Cylinder
19209236
Q: How to replace the Brake Master Cylinder (Hydraulic Boost) on GMC Sierra 1500?
A: Wheels should be blocked by applying the park brake before replacing the Brake Master Cylinder (Hydraulic Boost). First disconnect the electrical connector from the Brake Fluid Level Sensor. Then apply rubber caps or plugs to stop brake fluid from leaking out and contaminating the brake pipe fitting ends before taking the brake pipes off the master cylinder. The process starts with plugging open brake pipe ends then removing the master cylinder mounting nuts to completely remove the master cylinder and its reservoir from the vehicle. Begin the installation process with the master cylinder reservoir followed by bench bleaching the master cylinder before reinstalling the vehicle. Follow by mounting the master cylinder with its nuts then torque them to 33 nm (24 ft. Lbs.). Begin by removing the rubber plugs or caps from the open brake pipe ends before you insert and tighten the brake pipes to 25 nm (18 ft. Lbs.). The electrical connector leads to the Brake Fluid Level Sensor at this point followed by hydraulic brake system bleaching through the lines before releasing the park brake and unblocking wheels.