How to service and repair the Clutch Master Cylinder on GMC Jimmy?

You must start Clutch Master Cylinder repair by taking out the master cylinder rod from the clutch pedal followed by rotating the cylinder 45 degrees counterclockwise to unravel it. First disconnect the wiring harness from the Clutch Master Cylinder start switch then remove the clips that hold the clutch line in place between the dash panel and heat shield before extracting the Clutch Master Cylinder from its panel. The dual service tool j42371 helps remove the clutch line from the concentric slave cylinder function. Before installation begin by fastening clutch line attach clips to both the dash panel and heat shield then complete the connection by pulling the connector sleeve toward the concentric slave cylinder. Insert the Clutch Master Cylinder into the cowl panel opening and rotate it 45 degrees counter-clockwise for secure positioning. Finally attach the rod to the clutch pedal.

How to Service and Repair the Clutch Master Cylinder on GMC Canyon?

The hydraulic clutch line separator tool (J 42371) helps separate the white plastic sleeve from the quick connect to split the hydraulic Clutch Hose from the clutch actuator quick connect. Use a flat bladed tool to separate the retainer from the clutch pedal pin by sliding it between the Clutch Master Cylinder push rod and clutch pedal components. You should then discard the retainer. Begin by raising and supporting the vehicle and subsequently unfastening the clutch hydraulic hose retainer from the inner fender. Lower the vehicle before proceeding. The workshop should rotate the Clutch Master Cylinder clockwise 1/8 turn before removing it together with the hydraulic hose from the cowl. Before master cylinder installation into the cowl position the clutch fluid reservoir cap to the 1:30 indicator while routing the clutch hydraulic hose together with the master cylinder near the Brake Booster. Insert the unit counterclockwise by one-eighth rotation until complete seating while keeping the cap positioned up at the 12:00 mark. Use the vehicle lifter to raise your vehicle while checking that the clutch hydraulic hose stays clear of sharp edges and hot areas before pushing the quick connect fitting into the Clutch Slave Cylinder until it makes a "click" sound during insertion. Complete the check by giving the fitting a gentle pull to verify retention. Secure the new retainer inside the Clutch Master Cylinder push rod while fitting the retainer onto the vehicle's inner fender then lower the vehicle to install. Push the rod against the clutch pedal pin to lock it in place. You should complete the final steps by adjusting both the clutch release switch and clutch pedal position switch followed by bleeding the clutch hydraulic system if needed.

OEM GMC Clutch Master Cylinder

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

20 Clutch Master Cylinders found

View related parts
GMC Master Cylinder
Part Number: 24249143
$91.19 MSRP: $142.84
You Save: $51.65 (37%)
ADD TO CART
Product Specifications
- Other Name: Cylinder Assembly-Clutch Master; Clutch Master Cylinder; Cylinder, Engine Clutch Hydraulic Release Main
- Replaces: 24235356
Fits the following GMC Models:
- Canyon | 2004-2012 | SL, SLE, SLT, WT, Z71 Fleet, Z71 SL, Z71 SLE, Z85 SL, Z85 SLE | 4 Cyl 2.8 L GAS, 4 Cyl 2.9 L GAS, 5 Cyl 3.5 L GAS, 5 Cyl 3.7 L GAS, 8 Cyl 5.3 L GAS
View related parts
GMC Master Cylinder
Part Number: 12572805
$149.43 MSRP: $235.14
You Save: $85.71 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Cylinder Assembly-Clutch Master; Clutch Master Cylinder; Cylinder, Hydraulic Clutch Main Cylinder
- Replaces: 15048469, 12573372
Fits the following GMC Models:
- Sierra 1500 | 2001-2006 | Base, C3, Denali, HT, 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 FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Sierra 1500 HD | 2005-2006, 2001-2003 | SLE, SLT | 8 Cyl 6.0 L GAS
- Sierra 2500 | 2001-2004 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
- Sierra 2500 HD | 2001-2006 | Base, SL, SLE, SLT, WT | 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 | 2001-2006 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Yukon | 2001-2006 | Denali, SL, 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 | 2001-2006 | Denali, SL, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Yukon XL 2500 | 2001-2006 | SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
View More
View related parts
GMC Master Cylinder
Part Number: 12385527
$136.96 MSRP: $215.48
You Save: $78.52 (37%)
ADD TO CART
Product Specifications
- Other Name: Cylinder Kit, Hydraulic Clutch Main Cylinder; Clutch Master Cylinder
Fits the following GMC Models:
- C1500 | 1991-1996 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX, Sierra Special | 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
- C1500 Suburban | 1992-1995 | Base, SLE, SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
- C2500 | 1991-1995 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, 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 | 1992-1995 | Base, SLE, SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- C3500 | 1991-1995 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- K1500 | 1991-1996 | Sierra, Sierra SL, Sierra SLE, Sierra SLS, Sierra SLT, Sierra SLX, Sierra Special, 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, 8 Cyl 6.5 L DIESEL
- K1500 Suburban | 1992-1995 | Base, SLE, SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
- K2500 | 1991-1995 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, 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
- K2500 Suburban | 1992-1995 | Base, SLE, SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- K3500 | 1991-1995 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
View More
View related parts
GMC Master Cylinder
Part Number: 24264955
$100.59 MSRP: $157.57
You Save: $56.98 (37%)
ADD TO CART
Product Specifications
- Other Name: Cylinder Assembly-Clutch Master; Clutch Master Cylinder
- Replaced by: 19432092
Fits the following GMC Models:
- Canyon | 2015-2019 | 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
View related parts
GMC Master Cylinder
Part Number: 12574149
$139.59 MSRP: $219.63
You Save: $80.04 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Cylinder Assembly-Clutch Master; Clutch Master Cylinder; Cylinder, Hydraulic Clutch Main Cylinder
- Replaces: 15718351, 15740927, 15051974
Fits the following GMC Models:
- Sonoma | 1996-2003 | SL, SLE, SLS | 4 Cyl 2.2 L FLEX, 4 Cyl 2.2 L GAS
View related parts
GMC Master Cylinder
Part Number: 12385321
$136.92 MSRP: $215.44
You Save: $78.52 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Actuator, Hydraulic Clutch Main Cylinder; Clutch Master Cylinder
- Replaces: 15998928
Fits the following GMC Models:
- Sonoma | 1994-1995 | SL, SLE, SLS | 4 Cyl 2.2 L GAS
View related parts
GMC Master Cylinder
Part Number: 12584955
Product Specifications
- Other Name: Cylinder Assembly-Clutch Master; Clutch Master Cylinder; Cylinder, Hydraulic Clutch Main Cylinder
- Replaces: 12574150, 15762468
Fits the following GMC Models:
- Jimmy | 2001 | Diamond Edition, SL, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
- Sonoma | 2001-2003 | SL, SLE, SLS | 6 Cyl 4.3 L GAS
View related parts
GMC Master Cylinder
Part Number: 12385319
Product Specifications
- Other Name: Cylinder Assembly, Clutch Master; Clutch Master Cylinder; Cylinder, Hydraulic Clutch Main Cylinder
Fits the following GMC Models:
- Jimmy | 1994 | Base, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
- Sonoma | 1994 | SL, SLE, SLS | 6 Cyl 4.3 L GAS
View related parts
GMC Master Cylinder
Part Number: 15594142
Product Specifications
- Other Name: Cylinder, Hydraulic Clutch Main Cylinder; Clutch Master Cylinder
Fits the following GMC Models:
- S15 | 1984-1986 | Base, Gypsy, High Sierra, Sierra Classic | 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L DIESEL, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS
- S15 Jimmy | 1984-1986 | Base, Gypsy, High Sierra, Sierra Classic | 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS
View related parts
GMC Master Cylinder
Part Number: 15051973
Product Specifications
- Other Name: Cylinder, Hydraulic Clutch Main Cylinder; Clutch Master Cylinder
- Replaces: 15153421, 15733571
Fits the following GMC Models:
- Jimmy | 1996-2000 | Base, Diamond Edition, Envoy, SL, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
- Sonoma | 1996-2000 | SL, SLE, SLS | 6 Cyl 4.3 L GAS
View related parts
GMC Master Cylinder
Part Number: 24235619
$141.77 MSRP: $223.08
You Save: $81.31 (37%)
Product Specifications
- Other Name: Cylinder Assembly-Clutch Master; Clutch Master Cylinder; Cylinder, Hydraulic Clutch Main Cylinder
- Replaces: 24232433, 12572804
Fits the following GMC Models:
- Sierra 1500 | 2003-2006 | Base, 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 FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Sierra 1500 Classic | 2007 | 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 FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Sierra 1500 HD | 2005-2006, 2003 | SLE, SLT | 8 Cyl 6.0 L GAS
- Sierra 1500 HD Classic | 2007 | SLE, SLT | 8 Cyl 6.0 L GAS
- Sierra 2500 | 2003-2004 | Base, SLE, SLT, WT | 8 Cyl 6.0 L GAS
- Sierra 2500 HD | 2003-2006 | Base, SL, SLE, SLT, WT | 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 2500 HD Classic | 2007 | SL, SLE, SLT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Sierra 3500 | 2003-2006 | Base, SL, SLE, SLT, WT | 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 Classic | 2007 | SL, SLE, SLT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
- Yukon | 2003-2006 | Denali, SL, 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
View More
View related parts
GMC Master Cylinder
Part Number: 15727261
$192.34 MSRP: $302.50
You Save: $110.16 (37%)
Product Specifications
- Other Name: Cylinder Assembly-Clutch Master; Clutch Master Cylinder; Cylinder, Hydraulic Clutch Main Cylinder
- Replaces: 15740931
Fits the following GMC Models:
- C1500 | 1996-1999 | Sierra GT, Sierra SL, Sierra SLE, Sierra SLT, Sierra Special | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
- C1500 Suburban | 1996-1999 | Base, SLE, SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
- C2500 | 1996-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- C2500 Suburban | 1996-1999 | Base, SLE, SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- C3500 | 1996-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- K1500 | 1996-1999 | Sierra SL, Sierra SLE, Sierra SLT, Sierra Special | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
- K1500 Suburban | 1996-1999 | Base, SLE, SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL
- K2500 | 1996-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- K2500 Suburban | 1996-1999 | Base, SLE, SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- K3500 | 1996-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 5.7 L GAS, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
View More
View related parts
GMC Master Cylinder
Part Number: 12574148
$136.69 MSRP: $215.08
You Save: $78.39 (37%)
Product Specifications
- Other Name: Cylinder Assembly-Clutch Master; Clutch Master Cylinder; Cylinder, Hydraulic Clutch Main Cylinder
- Replaces: 15064078, 15027984
Fits the following GMC Models:
- Sierra 1500 | 2001-2002 | 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 | 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
- 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 | 2001-2002 | 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 | 2001-2002 | Denali, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Yukon XL 2500 | 2001-2002 | SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
View More
View related parts
GMC Master Cylinder
Part Number: 15576194
Product Specifications
- Other Name: Cylinder, Hydraulic Clutch Main Cylinder; Clutch Master Cylinder
Fits the following GMC Models:
- S15 | 1987-1990 | Base, EL, Gypsy, High Sierra, Sierra Classic | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- S15 Jimmy | 1987-1991 | Base, Gypsy, Sierra Classic, SLE, SLS, SLT, Timberline | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- Sonoma | 1991 | Base, SLE | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- Syclone | 1991 | Base | 6 Cyl 4.3 L GAS
View More
View related parts
GMC Master Cylinder
Part Number: 15033924
Product Specifications
- Other Name: Cylinder, Hydraulic Clutch Main Cylinder; Clutch Master Cylinder
Fits the following GMC Models:
- Sierra 1500 | 1999-2000 | SL, SLE, SLT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L GAS
- Sierra 2500 | 1999-2000 | SL, SLE, SLT | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Yukon | 2000 | SLE, SLT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L GAS
- Yukon XL 1500 | 2000 | SLE, SLT | 8 Cyl 5.3 L GAS
- Yukon XL 2500 | 2000 | SLE, SLT | 8 Cyl 6.0 L GAS
View More
View related parts
GMC Master Cylinder
Part Number: 12385317
Product Specifications
- Other Name: Actuator, Hydraulic Clutch Main Cylinder; Clutch Master Cylinder
- Replaces: 15679740
Fits the following GMC Models:
- Jimmy | 1992-1993 | Base, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
- Sonoma | 1992-1993 | Base, GT, SLE, SLS | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- Typhoon | 1992-1993 | Base | 6 Cyl 4.3 L GAS
View More
View related parts
GMC Master Cylinder
Part Number: 94665744
Product Specifications
- Other Name: Cylinder Assembly-Clutch Master; Clutch Master Cylinder; Cylinder, Hydraulic Clutch Main Cylinder
- Replaces: 15740930, 12577230, 15049053
Fits the following GMC Models:
- C2500 | 1997-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 7.4 L GAS
- C2500 Suburban | 1997-1999 | Base, SLE, SLT | 8 Cyl 7.4 L GAS
- C3500 | 1997-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 7.4 L GAS
- K2500 | 1997-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 7.4 L GAS
- K2500 Suburban | 1997-1999 | Base, SLE, SLT | 8 Cyl 7.4 L GAS
- K3500 | 1997-2000 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 7.4 L GAS
View More
View related parts
GMC Master Cylinder
Part Number: 15616092
Product Specifications
- Other Name: Cylinder, Hydraulic Clutch Main Cylinder; Clutch Master Cylinder
Fits the following GMC Models:
- Safari | 1985-1989 | Base, SL, SLE, SLT, SLX | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L GAS
View related parts
GMC Master Cylinder Repair Kit
Part Number: 15579688
Product Specifications
- Other Name: Cylinder Kit; Cylinder Kit, Hydraulic Clutch Main Cylinder; Repair Kit, Hydraulic Clutch Main Cylinder
Fits the following GMC Models:
- S15 | 1984-1990 | Base, EL, Gypsy, High Sierra, Sierra Classic | 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L DIESEL, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- S15 Jimmy | 1984-1991 | Base, Gypsy, High Sierra, Sierra Classic, SLE, SLS, SLT, Timberline | 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- Sonoma | 1991 | Base, SLE | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- Syclone | 1991 | Base | 6 Cyl 4.3 L GAS
View More
View related parts
GMC Master Cylinder
Part Number: 12387941
Product Specifications
- Other Name: Cylinder Assembly, Clutch Master; Clutch Master Cylinder; Cylinder, Hydraulic Clutch Main Cylinder
- Replaces: 12549134
Fits the following GMC Models:
- Jimmy | 1995 | Base, SL, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
- Sonoma | 1995 | SL, SLE, SLS | 6 Cyl 4.3 L GAS

GMC Clutch Master Cylinder Parts Questions & Experts Answers

Master Cylinder
15051973
Q: How to service and repair the Clutch Master Cylinder on GMC Jimmy?
A: You must start Clutch Master Cylinder repair by taking out the master cylinder rod from the clutch pedal followed by rotating the cylinder 45 degrees counterclockwise to unravel it. First disconnect the wiring harness from the Clutch Master Cylinder start switch then remove the clips that hold the clutch line in place between the dash panel and heat shield before extracting the Clutch Master Cylinder from its panel. The dual service tool j42371 helps remove the clutch line from the concentric slave cylinder function. Before installation begin by fastening clutch line attach clips to both the dash panel and heat shield then complete the connection by pulling the connector sleeve toward the concentric slave cylinder. Insert the Clutch Master Cylinder into the cowl panel opening and rotate it 45 degrees counter-clockwise for secure positioning. Finally attach the rod to the clutch pedal.
Master Cylinder
24249143
Q: How to Service and Repair the Clutch Master Cylinder on GMC Canyon?
A: The hydraulic clutch line separator tool (J 42371) helps separate the white plastic sleeve from the quick connect to split the hydraulic Clutch Hose from the clutch actuator quick connect. Use a flat bladed tool to separate the retainer from the clutch pedal pin by sliding it between the Clutch Master Cylinder push rod and clutch pedal components. You should then discard the retainer. Begin by raising and supporting the vehicle and subsequently unfastening the clutch hydraulic hose retainer from the inner fender. Lower the vehicle before proceeding. The workshop should rotate the Clutch Master Cylinder clockwise 1/8 turn before removing it together with the hydraulic hose from the cowl. Before master cylinder installation into the cowl position the clutch fluid reservoir cap to the 1:30 indicator while routing the clutch hydraulic hose together with the master cylinder near the Brake Booster. Insert the unit counterclockwise by one-eighth rotation until complete seating while keeping the cap positioned up at the 12:00 mark. Use the vehicle lifter to raise your vehicle while checking that the clutch hydraulic hose stays clear of sharp edges and hot areas before pushing the quick connect fitting into the Clutch Slave Cylinder until it makes a "click" sound during insertion. Complete the check by giving the fitting a gentle pull to verify retention. Secure the new retainer inside the Clutch Master Cylinder push rod while fitting the retainer onto the vehicle's inner fender then lower the vehicle to install. Push the rod against the clutch pedal pin to lock it in place. You should complete the final steps by adjusting both the clutch release switch and clutch pedal position switch followed by bleeding the clutch hydraulic system if needed.