Dorman 740-590 Window Regulator - Front Left

Reliable Manual Window Regulator for Oldsmobile and Pontiac

The Dorman 740-590 manual window regulator is designed specifically for select Oldsmobile and Pontiac models, including the Alero, Cutlass, and Grand Am. This bolt-on replacement part ensures smooth manual window operation without the need for a motor.

Key Features of the Dorman 740-590 Window Regulator

• Gear material constructed from durable plastic for consistent performance
• Manual window operation type, no motor included
• Bolt-on attachment type for straightforward installation
• Frame made from a combination of metal and plastic for strength and flexibility
• Includes one manual regulator per package
• No mounting hardware or installation instructions included

Detailed Description of the Dorman 740-590 Window Regulator

This window regulator is engineered to replace the manual window regulator in Oldsmobile Alero, Pontiac Cutlass, and Grand Am vehicles. The plastic gear material provides reliable engagement with the window mechanism, while the metal and plastic frame offers a balance of durability and weight savings. Designed as a bolt-on part, the Dorman 740-590 allows for a secure fit without modification. Note that this manual regulator does not include a motor or mounting hardware, so existing components may be reused during installation.

Common Issues Addressed by This Window Regulator

• Manual window not moving smoothly or getting stuck
• Window falling inside the door panel due to regulator failure
• Grinding or clicking noises when operating the window crank
• Window glass misalignment or uneven movement
• Worn or broken plastic gears causing window operation failure

Installation Notes and Tips

• Compatible with Oldsmobile Alero, Pontiac Cutlass, and Grand Am models
• Requires removal of the door panel to access the window regulator
• Use existing mounting hardware as none is included with the part
• Ensure proper alignment of the regulator frame before tightening bolts
• Test window operation before reassembling the door panel

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 740-590 window regulator undergoes quality checks to ensure reliable performance in compatible Oldsmobile and Pontiac vehicles. Warranty coverage details should be confirmed at the time of purchase.