HomeTransmission > Manual Transmission ComponentsDorman CM640100 Clutch Master Cylinder
Part #: CM640100

Dorman CM640100 Clutch Master Cylinder

⚙️ 25 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, GMC, and Hummer, Canyon, Colorado, H3, and H3T
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Reliable Clutch Master Cylinder for Chevrolet, GMC, and Hummer

The Dorman CM640100 clutch master cylinder is a standard replacement part designed to restore proper clutch function in select Chevrolet, GMC, and Hummer vehicles. Engineered to meet OEM specifications, this component ensures consistent hydraulic pressure for smooth manual transmission operation.

  • Standard replacement grade for dependable performance
  • Compatible with Chevrolet Canyon and Colorado models
  • Fits GMC Canyon and Colorado vehicles
  • Designed for Hummer H3 and H3T manual transmissions
  • Includes clutch master cylinder only

Product Details and Specifications

The Dorman CM640100 clutch master cylinder is manufactured to provide a direct fit for manual transmission systems in Chevrolet Canyon, Colorado, GMC Canyon, Colorado, and Hummer H3 and H3T models. This part is engineered to maintain proper hydraulic pressure, ensuring smooth clutch engagement and disengagement. As a standard replacement, it meets the necessary durability and performance standards required for everyday driving conditions. The package contains the clutch master cylinder itself, ready for installation without additional components.

Common Applications and Problem Resolution

  • Restores clutch hydraulic pressure for improved pedal feel
  • Eliminates clutch slippage caused by master cylinder failure
  • Resolves issues with clutch pedal sinking or sponginess
  • Prevents fluid leaks that can lead to clutch disengagement problems
  • Addresses difficulty in shifting gears due to hydraulic faults

Installation Notes and Tips

When installing the Dorman CM640100 clutch master cylinder, ensure the hydraulic system is properly bled to remove air pockets for optimal clutch performance. Verify compatibility with your specific Chevrolet Canyon, Colorado, GMC Canyon, Colorado, or Hummer H3/H3T model year before installation. Use appropriate tools to avoid damage to the cylinder or transmission components during replacement.

Quality Assurance and Warranty

Dorman provides this clutch master cylinder as a standard replacement part designed to meet or exceed OEM specifications. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Refer to official Dorman documentation for complete warranty information.

BrandDorman
Part NumberCM640100
Item GradeStandard replacement
Package ContentsClutch master cylinder

This part fits 25 vehicles. Search below:

YearMakeModelPositionNotes
2012ChevroletColoradoN/A
2012GMCCanyonN/A
2011ChevroletColoradoN/A
2011GMCCanyonN/A
2010ChevroletColoradoN/A
2010GMCCanyonN/A
2010HummerH3N/A
2010HummerH3TN/A
2009ChevroletColoradoN/A
2009GMCCanyonN/A
2009HummerH3N/A
2009HummerH3TN/A
2008ChevroletColoradoN/A
2008GMCCanyonN/A
2008HummerH3N/A
2007ChevroletColoradoN/A
2007GMCCanyonN/A
2007HummerH3N/A
2006ChevroletColoradoN/A
2006GMCCanyonN/A
2006HummerH3N/A
2005ChevroletColoradoN/A
2005GMCCanyonN/A
2004ChevroletColoradoN/A
2004GMCCanyonN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

12575151136.66014800085CM141896CM452580LMC431M0455

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.