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DormanPart #: 740-644
Dorman 740-644 Window Regulator - Front Left
⚙️ 141 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$61.14Free Shipping
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✅ In Stock · Ready To Ship
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, GMC, and Cadillac, Silverado 1500 Classic, Silverado 1500 HD Classic, Silverado 2500 HD Classic, Silverado 3500 Classic, Sierra 1500 Classic, Sierra 1500 HD Classic, Sierra 2500 HD Classic, Sierra 3500 Classic, Escalade, Escalade ESV, Escalade EXT, Avalanche 1500, Avalanche 2500, Silverado 1500, Silverado 1500 HD, Silverado 2500, Silverado 2500 HD, Silverado 3500, Suburban 1500, Suburban 2500, Tahoe, Sierra 1500, Sierra 1500 HD, Sierra 2500 HD, Sierra 3500, Yukon, Yukon XL 1500, Yukon XL 2500, and Sierra 2500
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Not what you need? Click here for all Window Regulator options
Reliable Electric Window Regulator for GM Trucks and SUVs
The Dorman 740-644 window regulator is designed for electric window operation in select Cadillac, Chevrolet, and GMC vehicles. This power window regulator offers a bolt-on attachment type and features a combination of metal and plastic frame materials for durability and smooth function.
- Compatible with Cadillac Escalade, Escalade ESV, Escalade EXT
- Fits Chevrolet Avalanche 1500, Avalanche 2500, Silverado 1500, 2500, 3500 series
- Suitable for GMC Sierra 1500, 2500, 3500, Yukon, Yukon XL models
- Electric window operation type without motor included
- Bolt-on attachment for straightforward installation
- Durable plastic gear and mixed metal/plastic frame construction
- Package includes one power window regulator (mounting hardware not included)
Product Details and Construction
The Dorman 740-644 window regulator is engineered with a plastic gear mechanism that ensures smooth and consistent window movement. The frame combines metal and plastic materials to balance strength and weight, providing reliable support for the window glass. This part is designed for electric window systems but does not include the motor, making it ideal for replacing just the regulator assembly. The bolt-on attachment type allows for a secure fit without the need for specialized fasteners, although mounting hardware is not included. Installation instructions are not provided, so professional installation or prior experience is recommended.
Compatible Vehicles and Applications
This window regulator is compatible with a range of General Motors trucks and SUVs, including:
- Cadillac Escalade, Escalade ESV, Escalade EXT
- Chevrolet Avalanche 1500 and 2500
- Chevrolet Silverado 1500, 2500, 3500 (including Classic and HD variants)
- GMC Sierra 1500, 2500, 3500 (including Classic and HD variants)
- GMC Yukon and Yukon XL 1500 and 2500
- Chevrolet Suburban 1500 and 2500, Tahoe
Common Issues Addressed by This Window Regulator
- Window glass failing to move up or down smoothly
- Intermittent or no window movement due to regulator failure
- Grinding or unusual noises when operating power windows
- Window glass misalignment or falling inside the door panel
- Broken or worn plastic gears causing regulator malfunction
Installation Notes and Tips
- Ensure compatibility with your specific make, model, and year before installation
- Since mounting hardware and motor are not included, retain original components or purchase separately if needed
- Professional installation is recommended if unfamiliar with door panel disassembly
- Test window operation before reassembling door panel to confirm proper fit and function
Quality Assurance and Warranty
Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 740-644 window regulator undergoes quality checks to ensure durability and reliable performance. Warranty coverage details should be confirmed at the time of purchase, as they may vary by distributor or retailer.
| Brand | Dorman |
| Part Number | 740-644 |
| Attachment Type | Bolt On |
| Frame Material | Metal |
| Frame Material | Plastic |
| Installation Instructions Included | No |
| Motor Included | No |
| Mounting Hardware Included | No |
| Package Contents | 1 Power Regulator |
| Thread Direction | Plastic |
| Window Operation Type | Electric |
| Wire Quantity | 0 |
This part fits 141 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2007 | Chevrolet | Silverado 1500 Classic | Front Left | Fits power window regulation in various vehicle models. | ||
| 2007 | Chevrolet | Silverado 1500 HD Classic | Front Left | Fits power window regulation in various vehicle models. | ||
| 2007 | Chevrolet | Silverado 2500 HD Classic | Front Left | Fits power window regulation in various vehicle models. | ||
| 2007 | Chevrolet | Silverado 3500 | Front Left | |||
| 2007 | Chevrolet | Silverado 3500 Classic | Front Left | Fits power window regulation in various vehicle models. | ||
| 2007 | GMC | Sierra 1500 Classic | Front Left | Fits power window regulation in various vehicle models. | ||
| 2007 | GMC | Sierra 1500 HD Classic | Front Left | Fits power window regulation in various vehicle models. | ||
| 2007 | GMC | Sierra 2500 HD Classic | Front Left | Fits power window regulation in various vehicle models. | ||
| 2007 | GMC | Sierra 3500 Classic | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Cadillac | Escalade | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Cadillac | Escalade ESV | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Cadillac | Escalade EXT | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Chevrolet | Avalanche 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Chevrolet | Avalanche 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Chevrolet | Silverado 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Chevrolet | Silverado 1500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Chevrolet | Silverado 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Chevrolet | Silverado 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Chevrolet | Silverado 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Chevrolet | Suburban 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Chevrolet | Suburban 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | Chevrolet | Tahoe | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | GMC | Sierra 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | GMC | Sierra 1500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | GMC | Sierra 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | GMC | Sierra 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | GMC | Yukon | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | GMC | Yukon XL 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2006 | GMC | Yukon XL 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Cadillac | Escalade | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Cadillac | Escalade ESV | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Cadillac | Escalade EXT | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Chevrolet | Avalanche 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Chevrolet | Avalanche 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Chevrolet | Silverado 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Chevrolet | Silverado 1500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Chevrolet | Silverado 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Chevrolet | Silverado 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Chevrolet | Silverado 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Chevrolet | Suburban 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Chevrolet | Suburban 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | Chevrolet | Tahoe | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | GMC | Sierra 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | GMC | Sierra 1500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | GMC | Sierra 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | GMC | Sierra 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | GMC | Yukon | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | GMC | Yukon XL 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2005 | GMC | Yukon XL 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Cadillac | Escalade | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Cadillac | Escalade ESV | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Cadillac | Escalade EXT | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Chevrolet | Avalanche 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Chevrolet | Avalanche 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Chevrolet | Silverado 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Chevrolet | Silverado 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Chevrolet | Silverado 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Chevrolet | Silverado 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Chevrolet | Suburban 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Chevrolet | Suburban 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | Chevrolet | Tahoe | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | GMC | Sierra 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | GMC | Sierra 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | GMC | Sierra 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | GMC | Sierra 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | GMC | Yukon | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | GMC | Yukon XL 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2004 | GMC | Yukon XL 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Cadillac | Escalade | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Cadillac | Escalade ESV | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Cadillac | Escalade EXT | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Chevrolet | Avalanche 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Chevrolet | Avalanche 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Chevrolet | Silverado 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Chevrolet | Silverado 1500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Chevrolet | Silverado 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Chevrolet | Silverado 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Chevrolet | Silverado 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Chevrolet | Suburban 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Chevrolet | Suburban 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | Chevrolet | Tahoe | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | GMC | Sierra 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | GMC | Sierra 1500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | GMC | Sierra 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | GMC | Sierra 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | GMC | Sierra 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | GMC | Yukon | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | GMC | Yukon XL 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2003 | GMC | Yukon XL 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Cadillac | Escalade | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Cadillac | Escalade EXT | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Chevrolet | Avalanche 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Chevrolet | Avalanche 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Chevrolet | Silverado 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Chevrolet | Silverado 1500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Chevrolet | Silverado 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Chevrolet | Silverado 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Chevrolet | Silverado 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Chevrolet | Suburban 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Chevrolet | Suburban 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | Chevrolet | Tahoe | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | GMC | Sierra 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | GMC | Sierra 1500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | GMC | Sierra 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | GMC | Sierra 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | GMC | Sierra 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | GMC | Yukon | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | GMC | Yukon XL 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2002 | GMC | Yukon XL 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | Chevrolet | Silverado 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | Chevrolet | Silverado 1500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | Chevrolet | Silverado 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | Chevrolet | Silverado 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | Chevrolet | Silverado 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | Chevrolet | Suburban 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | Chevrolet | Suburban 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | Chevrolet | Tahoe | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | GMC | Sierra 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | GMC | Sierra 1500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | GMC | Sierra 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | GMC | Sierra 2500 HD | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | GMC | Sierra 3500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | GMC | Yukon | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | GMC | Yukon XL 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2001 | GMC | Yukon XL 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2000 | Chevrolet | Silverado 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2000 | Chevrolet | Silverado 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2000 | Chevrolet | Suburban 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2000 | Chevrolet | Suburban 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2000 | Chevrolet | Tahoe | 5.3L | V8 | Front Left | Fits power window regulation in various vehicle models. |
| 2000 | Chevrolet | Tahoe | 4.8L | V8 | Front Left | Fits power window regulation in various vehicle models. |
| 2000 | GMC | Sierra 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2000 | GMC | Sierra 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2000 | GMC | Yukon | 5.3L | V8 | Front Left | Fits power window regulation in various vehicle models. |
| 2000 | GMC | Yukon | 4.8L | V8 | Front Left | Fits power window regulation in various vehicle models. |
| 2000 | GMC | Yukon XL 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 2000 | GMC | Yukon XL 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 1999 | Chevrolet | Silverado 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 1999 | Chevrolet | Silverado 2500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 1999 | GMC | Sierra 1500 | Front Left | Fits power window regulation in various vehicle models. | ||
| 1999 | GMC | Sierra 2500 | Front Left | Fits power window regulation in various vehicle models. |
* 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:
150465098121282178ASK740644WLR3001
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.