6L80 Transmission Fluid Thermal Bypass Valve For 2014-2018 GM Silverado/Sierra

6L80 Transmission Fluid Thermal Bypass Valve for GM Silverado/Sierra

The 6L80 transmission fluid thermal bypass valve controls coolant flow to the transmission fluid warmer on 2014-2018 GM trucks, helping the 6L80 reach and hold proper operating temperature.

Overview

This transmission fluid thermal bypass valve is a direct replacement component for the 6L80 automatic transmission used in many 2014-2018 GM trucks and SUVs. The valve regulates when transmission fluid is routed through the thermal warmer circuit, which helps the 6L80 warm up faster in cold conditions and stay within a stable temperature range under load. It is intended for drivers, mechanics, and fleet technicians replacing a failed or leaking bypass valve on a compatible GM vehicle.

Built For Performance

• Thermostatic bypass design regulates fluid flow based on temperature
• Housing and internal seals built to withstand hot transmission fluid
• Direct-fit replacement for the factory 6L80 thermal bypass location
• Helps reduce cold-start fluid circulation losses in winter driving
• Supports stable transmission temperatures during towing and hauling
• Simple bolt-in installation with no tuning or programming required

Fits These Machines

• for 2014-2018 GM Silverado 1500 with 6L80 transmission
• for 2014-2018 GM Sierra 1500 with 6L80 transmission
• for 2014-2018 GM Silverado 2500HD with 6L80 transmission
• for 2014-2018 GM Sierra 2500HD with 6L80 transmission
• for 2014-2018 GM Silverado 3500HD with 6L80 transmission
• for 2014-2018 GM Sierra 3500HD with 6L80 transmission

On-The-Job Use

• Replacing a leaking or stuck thermal bypass valve on the transmission cooler circuit
• Restoring proper warm-up behavior on trucks used in cold climates
• Servicing fleets of 6L80-equipped work trucks and tow vehicles
• Routine transmission cooling system repair during fluid service
• Fixing slow or inconsistent torque converter lockup related to fluid temperature

Specs At A Glance

Good To Know

Q: Does this valve need any special tools or programming? A: No, it installs as a direct replacement on the 6L80 transmission fluid circuit and does not require programming or tuning. Basic hand tools and a fluid top-off after installation are typically all that is needed.

Q: Will this fit any 6L80 transmission? A: It is intended for the 6L80 units used in 2014-2018 GM Silverado and Sierra trucks, and other vehicles with the same transmission may also work. Confirm your transmission code and model year before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.