2014-2018 Silverado & Sierra 1500 5.3L Thermal Bypass Valves

The stock thermostatic valve on your 2014-2018 Silverado & Sierra 1500 5.3L is a critical part of your Silverado or Sierra's transmission cooling system that's also extremely prone to failure, which can cause you and your Silverado or Sierra 1500 build some huge problems. The thermostat element inside the factory valve can easily get clogged by debris or get stuck closed, which completely cuts off the fluid flow from your Silverado or Sierra's transmission to its transmission cooler, which can cause high transmission temperatures, limp modes, and possible transmission damage if temperatures get high enough for too long. Tier One's thermal bypass valves for 2014-2018 Silverado & Sierra 5.3L 1500 trucks completely delete the thermostat element, allowing for the full-time flow of fluid to your truck's transmission cooler, improving transmission temperatures and reliability. Also check out our 2014-2018 Silverado & Sierra 1500 5.3L Transmission Coolers or our 2014-2018 Silverado & Sierra 1500 5.3L Transmission Pans!