Currently there are no after market thermostats available the open as a lower temp for the Colorados, Canyons, H3's and Trailblazers. We can however allow a small amount of flow across the 195deg thermostat while it is closed. This tiny spacer is perfect for allowing the truck to truck cooler while still retaining the factory thermostat and it's operation.  Check out our install video here https://youtu.be/_A220c_xl3M