Dorman 940-674 Liftgate Lock Actuator

Dorman 940-674 Liftgate Lock Actuator

Dorman 940-674 is a direct replacement liftgate lock actuator for select Buick, Chevrolet, Cadillac, and GMC vehicles. It is built with a metal and plastic housing, a black body and connector, and a bolt-on mounting design for specific latch and actuator assemblies.

Key Features

• Direct replacement liftgate lock actuator for select rear liftgate applications
• Metal and plastic construction with a steel body material
• Black housing and black female connector with rectangular shape
• Bolt-on mounting style with 2 mounting holes
• 3-terminal blade pin design
• Engineered and tested for reliable operation and safety
• Cross-reference part numbers include Standard Ignition DLA2189 and DLA2279

Product Details

This Dorman liftgate lock actuator is engineered to replace the stock actuator on specific vehicle years, makes, and models. It is a practical solution for rear liftgate latch systems that use an integrated lock actuator assembly, including applications on the Chevrolet Equinox, Chevrolet Blazer, GMC Terrain, and Buick Encore GX. The part number 940-674 is also listed for other select applications such as Chevrolet Traverse, GMC Acadia, Chevrolet Spark, Buick Regal Sportback, Buick Regal TourX, Cadillac XT4, Chevrolet Cruze, and Chevrolet Volt.

Built with a rectangular connector, female terminal interface, and blade pin terminals, this actuator is intended for vehicles that require a bolt-on replacement with no wiring harness included. The compact housing measures 3.5 inches long and 5.75 inches wide, with a black connector and body for a factory-style appearance. Dorman 940-674 supports rear liftgate lock function on vehicles including the Chevrolet Equinox and GMC Terrain, where the latch and actuator assembly is specified in the fitment notes.

Common Problems This Part Can Help Solve

• Liftgate will not lock or unlock properly
• Rear hatch latch does not respond to the power lock system
• Intermittent or failed liftgate actuator operation
• Broken or worn actuator inside the latch and actuator assembly
• Rear liftgate security or closure issues caused by actuator failure

Installation Notes and Fitment

Compatible With select 2011-2024 vehicles, including Fits 2020-2024 Buick Encore GX, N/A; Fits 2019-2024 Chevrolet Blazer, N/A, wo/Power Liftgate; Fits 2018-2024 Chevrolet Equinox, N/A, wo/Power Liftgate; Fits 2021-2024 Chevrolet Trailblazer, N/A, wo/Power Liftgate; Fits 2018-2024 GMC Terrain, N/A, wo/Power Liftgate; Fits 2018-2023 Chevrolet Traverse, N/A, wo/Power Liftgate; Fits 2017-2023 GMC Acadia, N/A, wo/Power Liftgate; Fits 2016-2022 Chevrolet Spark, N/A, Latch and Actuator Assembly; Fits 2018-2020 Buick Regal Sportback, N/A, Latch and Actuator Assembly; Fits 2018-2020 Buick Regal TourX, N/A, wo/Power Liftgate; Fits 2019-2020 Cadillac XT4, N/A, wo/Power Liftgate; Fits 2017-2019 Chevrolet Cruze, N/A, Latch and Actuator Assembly; Fits 2011-2019 Chevrolet Volt, N/A, Latch and Actuator Assembly.

Before installation, confirm the vehicle uses the listed latch and actuator assembly or non-power liftgate configuration. Verify connector shape, terminal count, and mounting points against the original part. This part number 940-674 is a direct replacement style component, so matching the OE connector and mounting layout is important for proper fit.

Quality Assurance

Dorman states that this liftgate lock actuator has undergone extensive quality and safety testing to support reliable performance. The part is engineered as a direct replacement for the original actuator on the specified applications.