Dieselr 10L80 Transmission Fluid Thermal Bypass Valve Duramax LM2/LZ0 3.0L (2020-2025)

10L80 Thermal Bypass Valve for 3.0L Duramax

The Dieselr 10L80 Transmission Fluid Thermal Bypass Valve Duramax LM2/LZ0 3.0L (2020-2025) replaces the factory thermal control assembly to allow consistent transmission fluid circulation through the cooler circuit. Designed specifically for GM 3.0L LM2 and LZ0 Duramax trucks equipped with the 10L80 transmission, this component supports predictable temperature management under load.

By eliminating delayed cooler flow behavior in the OE configuration, this upgrade promotes stable transmission operating temperatures during towing, daily driving, and sustained highway operation.

Platform Fitment

• 2020-2025 Chevrolet Silverado 1500 3.0L Duramax (LM2 / LZ0)
• 2020-2025 GMC Sierra 1500 3.0L Duramax (LM2 / LZ0)
• Equipped with 10L80 automatic transmission

Confirm transmission model prior to ordering. This valve is specific to the 10L80 used behind the 3.0L Duramax platform.

Engineering Overview

Continuous Cooler Flow

Allows steady transmission fluid routing through the cooler circuit, reducing temperature spikes during extended operation.

Platform-Specific Fitment

Manufactured to match factory sealing surfaces and mounting geometry for proper installation without modification.

Improved Thermal Stability

Supports controlled transmission temperatures when towing or operating in high ambient conditions.

Installation Notes

• Direct replacement component
• No tuning or calibration changes required
• Professional installation recommended

Installer is responsible for confirming proper installation and transmission configuration.

Support

Dieselr selects components based on platform validation and durability under real operating conditions. Confirm overall transmission strategy before proceeding.

Built to work the way it should.