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DormanPart #: 740-434
Dorman 740-434 Window Regulator - Front Left
⚙️ 100 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$63.79Free Shipping
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, G30, P30, G3500, P3500, G10, G20, G1500, and G2500
🔄Easy Returns — Return within 60 days for a full refund
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Not what you need? Click here for all Window Regulator options
Reliable Electric Window Regulator for Chevrolet and GMC Vans
The Dorman 740-434 window regulator is designed to restore smooth electric window operation in select Chevrolet and GMC vans. Engineered with durable materials, this power window regulator offers a bolt-on installation solution for models including the G10, G20, G30, P30, and P3500.
Key Features of the Dorman 740-434 Window Regulator
- Gear material constructed from plastic for consistent performance
- Frame made of both metal and plastic components for strength and durability
- Bolt-on attachment type ensures straightforward installation
- Electric window operation type compatible with factory power window systems
- Motor not included, designed to work with existing or separately purchased motors
- Mounting hardware and installation instructions are not included
- Package contains one power window regulator unit
Detailed Product Description
The Dorman 740-434 window regulator is a direct replacement part engineered to meet the specifications of original equipment for Chevrolet and GMC vans, including the G10, G20, G30, P30, and P3500 models. Its plastic gear material reduces noise and wear during window operation, while the combination of metal and plastic in the frame provides a balance of rigidity and corrosion resistance. This regulator is designed for electric window systems and requires a compatible motor, which is not included. The bolt-on attachment type allows for a secure fit using existing mounting points, although mounting hardware and installation instructions are not provided with the product.
Common Applications and Issues Addressed
- Restores power window functionality in Chevrolet G10, G20, G30, P30, and P3500 vans
- Replaces worn or damaged window regulators causing window misalignment or failure
- Eliminates window noise or sticking due to faulty gear mechanisms
- Addresses issues with slow or non-responsive electric window movement
- Provides a reliable replacement for broken or bent regulator frames
Installation Notes and Tips
- Designed for bolt-on installation using existing mounting points on compatible Chevrolet and GMC vans
- Motor must be sourced separately if replacement is needed
- Installation instructions are not included; professional installation is recommended if unfamiliar with power window systems
- Verify vehicle compatibility with part number 740-434 before installation
Quality Assurance and Warranty Information
Dorman manufactures the 740-434 window regulator to meet or exceed OEM standards for fit and function. While mounting hardware and motor are not included, the product is built to provide reliable service when installed correctly. Please consult Dorman's warranty policy for specific coverage details related to this part.
| Brand | Dorman |
| Part Number | 740-434 |
| 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 100 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1996 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1996 | Chevrolet | P30 | Front Left | Fits power window regulation in various vehicle models. |
| 1996 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1996 | GMC | P3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1995 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1995 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1995 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1995 | Chevrolet | P30 | Front Left | Fits power window regulation in various vehicle models. |
| 1995 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1995 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1995 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1995 | GMC | P3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1994 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1994 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1994 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1994 | Chevrolet | P30 | Front Left | Fits power window regulation in various vehicle models. |
| 1994 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1994 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1994 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1994 | GMC | P3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1993 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1993 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1993 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1993 | Chevrolet | P30 | Front Left | Fits power window regulation in various vehicle models. |
| 1993 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1993 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1993 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1993 | GMC | P3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1992 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1992 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1992 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1992 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1992 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1992 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1991 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1991 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1991 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1991 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1991 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1991 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1990 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1990 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1990 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1990 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1990 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1990 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1989 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1989 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1989 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1989 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1989 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1989 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1988 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1988 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1988 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1988 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1988 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1988 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1987 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1987 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1987 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1987 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1987 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1987 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1986 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1986 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1986 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1986 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1986 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1986 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1985 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1985 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1985 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1985 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1985 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1985 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1984 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1984 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1984 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1984 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1984 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1984 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1983 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1983 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1983 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1983 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1983 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1983 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1982 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1982 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1982 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1982 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1982 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1982 | GMC | G3500 | Front Left | Fits power window regulation in various vehicle models. |
| 1981 | Chevrolet | G10 | Front Left | Fits power window regulation in various vehicle models. |
| 1981 | Chevrolet | G20 | Front Left | Fits power window regulation in various vehicle models. |
| 1981 | Chevrolet | G30 | Front Left | Fits power window regulation in various vehicle models. |
| 1981 | GMC | G1500 | Front Left | Fits power window regulation in various vehicle models. |
| 1981 | GMC | G2500 | Front Left | Fits power window regulation in various vehicle models. |
| 1981 | GMC | G3500 | 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:
11A45220497648125082144fWLR1108WR51028
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.