2008 GMC Sierra 3500 HD Computer Chip Programmers

The GT Gas and Diesel tuners unlock more horsepower and torque to meet the unique demands you put on your vehicle. With preloaded tuning, customizable gauges to track performance, and a wide variety of hauling and off-roading features, you’ll have plenty of power to take on tough jobs or improved fuel economy for long highway hauls.

Product Features:

• Track critical performance data in real-time on easy to navigate virtual gauges
• Select between multiple street-tested, dyno-proven tunes for economy, towing or performance.
• Reads and clears DTC (Diagnostic Trouble Codes) with ease
• Manage tire size, gear ratio, speed limiter, speedometer calibrations, shift points, and more. Offering shift-on-the-fly tuning and better control of defueling and regeneration.
• Product might not be available in all states due to local laws.

If you’ve installed tires that are larger or smaller than original equipment tires, or if you have installed a ring and pinion gear set with a different rear gear ratio, the Max Energy Spectrum allows you to re-program for correct speedometer readings, as well as correct part-throttle shifting. The vehicle’s computer calculates your vehicle’s speed based on the diameter of the stock tires. If you’ve installed taller or shorter tires, or changed the rear gear ratio, the vehicle’s computer doesn’t know how fast your vehicle is going. As a result, the automatic transmission may not shift correctly and the speedometer readings will not be accurate (as required by law).

Product Features:

• Speedometer correction for multiple tire sizes
• Return back to factory settings
• Reads/Displays/Clears Diagnostic Trouble Codes (DTC’s)
• Internet updateable
• Product might not be available in all states due to local laws.

The X4 Performance Programmer connects high-performance tunes to your vehicle for an immediate boost in horsepower and torque. Awaken your engine to its maximum real potential with preloaded, dyno-proven tune files through the easy-to-use functionality. Instantly increase horsepower and torque and customizeModify a variety of parameters at the touch of a button, all while monitoring gauges on a customizable display.

Product Features:

• Read vehicle performance data on a full-color LCD display for easy viewing, day or night.
• Preloaded, street-tested, dyno-proven tunes boost horsepower, torque, and throttle sensitivity.
• Reads and clears DTC (Diagnostic Trouble Codes) with ease.
• Load up to 10 custom tune files created by any SCT Custom Tuning Dealer.
• Full color LCD display
• High-speed data logging/monitoring
• Dual analog inputs
• Most popular vehicles supported
• Installs quickly and easily
• Easy restoration back to stock
• User adjustable vehicle parameters
• USB Interface cable included
• Product might not be available in all states due to local laws.

The Diablo Sport Trinity T2 EX is the most advanced performance programmer and monitoring system available for popular 1999-2016 GM vehicles, including the Silverado, Sierra, Camaro, Corvette, Tahoe, Yukon, and Escalade. Designed to deliver real horsepower and torque gains while staying fully emissions compliant, the Trinity T2 EX combines cutting-edge tuning technology with an easy-to-use, high-definition touchscreen interface.

Product Features:

• Add 25-30 rewhip over stock on 93 octane fuel.
• Trucks and SUVs get tunes for 87, 91 and 93 octane fuels
• Performance applications get tunes for 91 and 93 octane fuels
• 99-16 4.8/5.3/6.0/6.2 trucks
• 99-16 Camaro 5.7/6.2
• 99-16 Corvette 5.7/6.0/6.2
• 04-06 GTO 5.7/6.0
• 04-06 SSR
• 99-16 Escalade 6.0/6.2
• 99-16 Tahoe/Yukon 4.8/5.3/6.0/6.2
• Tunes for TCM provided where applicable
• Remove top speed limiter
• Full-color, high-definition 5 touch screen
• Lightning-fast read/write times
• Performance tuning for mileage, towing, daily driving, and performance
• Dyno-proven power gains
• 50 state legal performance.
• Wi-Fi Updating
• Full data logging capability
• AFM active fuel management options
• Read and clear diagnostic trouble codes
• Multi-vehicle licenses available
• Correct speedometer and adjust speed/rev limiters
• Options, features, and coverage may vary based on vehicle application

Engineered for enthusiasts who want real control over performance, the Super Tuner unlocks power through precise calibration of fuel, spark, and transmission settings. It improves throttle response, adjusts for aftermarket upgrades, and delivers optimized drivability across GM, Ford, and Dodge platforms. Advanced mapping gives measurable gains without compromising reliability. Backed by decades of ignition and tuning expertise, it simplifies the tuning process while preserving factory safeguards. Expect sharper acceleration, smoother shifts, and a noticeable improvement in overall performance with every drive.

Product Features:

• Performance test (0-60, ╝ mile testing)
• Carb EO # D-745
• Shift point and firmness adjustment
• Tire size and axle gear ratio adjustment
• Internet updating using PC software
• HD 2.8″ color screen with updated interface for easier and faster modifications
• Speed and rev limiter adjustments
• Active fuel management control
• Diagnostic capability – read and clear trouble codes with explanation of codes
• Speed and rev limiter adjustments.
• Carb EO # D-745
• Diagnostic capability – read and clear trouble codes with explanation of codes