HomeBody > DoorsDorman 740-142 Window Regulator - Front Left
Part #: 740-142

Dorman 740-142 Window Regulator - Front Left

Front Left
⚙️ 4 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: Cadillac, Seville
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Overview of Dorman 740-142 Window Regulator for Cadillac Seville

The Dorman 740-142 window regulator is designed specifically for Cadillac Seville models, providing reliable electric window operation. This power window regulator offers a bolt-on attachment for straightforward installation and is engineered with durable materials to ensure long-lasting performance.

  • Compatible with Cadillac Seville electric window systems
  • Gear made of plastic for smooth operation
  • Steel housing for enhanced durability
  • Metal and plastic frame materials for structural integrity
  • Bolt-on attachment type for secure mounting
  • Motor not included, designed for use with existing motor
  • Installation instructions not included
  • Package contains one power window regulator

Detailed Product Description

The Dorman 740-142 window regulator is engineered to restore proper window function in Cadillac Seville vehicles. Featuring a plastic gear that meshes precisely within a steel housing, this regulator balances smooth movement with structural strength. The combination of metal and plastic frame materials provides a robust yet lightweight assembly, designed to withstand daily use. This part is intended for electric window operation and requires the existing motor, as it does not include one. The bolt-on attachment type ensures a secure fit within the door assembly, maintaining factory specifications for fit and function.

Common Issues Addressed by This Window Regulator

  • Window glass failing to move up or down smoothly
  • Intermittent or complete loss of electric window operation
  • Grinding or unusual noises during window movement
  • Window becoming stuck in one position
  • Loose or unstable window glass within the door frame

Installation Notes and Tips

Installation of the Dorman 740-142 window regulator requires removal of the door panel and careful handling of the window glass. Since mounting hardware and installation instructions are not included, it is recommended to retain original bolts and fasteners or acquire compatible hardware separately. Ensure the regulator is properly aligned before securing bolts to avoid binding or misalignment. Testing window operation before reassembling the door panel can help verify correct installation.

Quality Assurance and Warranty Information

Dorman manufactures this window regulator to meet or exceed OEM standards for fit and function on Cadillac Seville models. While the motor is not included, the regulator housing and gear materials are selected for durability and consistent performance. Warranty coverage details should be confirmed at the point of purchase, as they may vary.

BrandDorman
Part Number740-142
Attachment TypeBolt On
Frame MaterialMetal
Frame MaterialPlastic
Housing MaterialSteel
Installation Instructions IncludedNo
Motor IncludedNo
Mounting Hardware IncludedNo
Package Contents1 Power Regulator
Thread DirectionPlastic
Window Operation TypeElectric
Wire Quantity0

This part fits 4 vehicles. Search below:

YearMakeModelPositionNotes
2004CadillacSevilleFront LeftFits power window regulation in various vehicle models.
2003CadillacSevilleFront LeftFits power window regulation in various vehicle models.
2002CadillacSevilleFront LeftFits power window regulation in various vehicle models.
2001CadillacSevilleFront LeftFits 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:

25701607382346821004dWLR4011WR0036WR40057

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