2020-2021 Silverado & Sierra 1500 3.0L Duramax Tuners & Monitors

The 3.0L Duramax diesel under the hood of your 2020-2021 Silverado & Sierra 1500 and its 10L80 transmission are one heck of a one-two punch that lets it tow heavy, tear it up off-road, and even stomp around the street and track. That being said, there's still a ton of power and performance hidden within that's just waiting to get unleashed with the right performance tuning. Tier One's selection of Silverado & Sierra 3.0L Duramax tuners and performance monitors come jam-packed with new engine management software that turn up your Duramax's boost pressure, adjust fueling, up throttle response, and change transmission function so that your Duramax 3.0L build feels like an entirely new beast. Many of these tuners and monitors can even adjust for tire size and gear ratio so your Silverado or Sierra's speedometer and odometer read correctly. Also check out our 2020-2021 Silverado & Sierra 1500 3.0L Duramax Transmission Coolers or 2020-2021 Silverado & Sierra 1500 3.0L Thermal Bypass Valves!