The GT Diesel tuner unlocks more horsepower and torque to meet the unique demands you put on your vehicle. With shift-on-the-fly tuning*, customizable gauges to track performance, and better control of defueling and regeneration, you’ll be able to summon the low-end power to take on tough jobs or improve fuel economy for long highway hauls. Space for up to 10 custom tunes helps you adjust for the many ways you put your diesel to the test.
*Duramax LML and LGH are not shift on the fly.
Dyno Proven Performance
The GT Diesel delivers DYNO proven tune files that INCREASE HORSEPOWER and TORQUE
Monitor More Parameters
The GT Diesel comes complete with a mount for on dash monitoring of a huge list of parameters.
Now With Custom Tuning
Stores up to 10 custom tune files created by your local Bully Dog / SCT Custom Tuning Dealer. *Not available for all vehicles
WHAT YOU CAN ADJUST
Control how long the accessory items will remain on after the engine has been turned off and the doors remain closed. Accessory items such as the radio, cigarette lighter, ect.
Auto Door Lock
Enable the vehicle to automatically lock all the doors any time it reaches a speed of 15mph. Once the vehicle comes to a stop, if the driver’s door is the first to open, then all other doors will automatically unlock.
This gauge option shows the boost. This information is used in defuel settings to reduce the boost when the limit is exceeded.
This gauge option shows the boost. This information is used in warning settings to alarm when the boost limit is exceeded.
Current coolant temperature; this information is used for warning level and safety defueling settings.
Coolant Temperature Warning
This gauge option shows the coolant temperature in °F or °C. This information is used in warning settings to alarm when the coolant temperature limit is exceeded.
Daytime Running Lights
Dissable or enable daytime running lights.
Fog Light/High Beam
Be able to use the fog lights and the high beams at the sametime.
Head Light Delay
Set the amount of time that the head lamps remain on after the engine has been turned off.
Horn Chirp Length
Adjust the length of the horn chirp to either short or long when the vehicle is locked using the remote.
Horn Chirp On Lock
The vehicle horn will sound each time the doors are locked by a remote while this feature is enabled.
Enable and select a value for Engine Idle position. This is a great feature for keeping voltage in the vehicle up while running auxiliary electronics off of the vehicle’s power system.
Idle Shutdown Timer
Set the length of time the vehicle will idle until the engine turns off. Great feature to save fuel to stop continous idling and extend the life of the turbo by allowing it to cool down before the engine shuts off.
Low End Power
Increased throttle sensitivity across the full RPM range.
Lower soot accumulation in the DPF by manually starting a regeneration at highway speeds.
This gauge option shows the engine oil temperature in °F or °C. This information is used for warning level and safety defueling settings.
Optical Flash On Lock
The hazard lights will flash each time the doors are locked using the remote when this feature is enabled.
Adjust the RPM of the PTO from the unit manually.
This gauge option shows the pyrometer temperature. This information is used in defuel settings to reduce the exhaust temperature when the limit is exceeded.
Pyrometer Temperature Warning
This gauge option shows the pyrometer temperature in °F or °C. This information is used in warning settings to alarm when the pyrometer temperature limit is exceeded.
Relearn Vehicle Data/Transmission Adaptive Learning
The transmission adaptive learning, (TAL), changes the way the automatic transmission in the vehicle shifts based on driving habits.
Seat Belt Chime:
Turn off seat belt reminder chime.
Change the top speed that the vehicle will reach before the engine automatically limits the power needed to go faster.
Lower soot accumulation in the DPF by manually starting a regeneration while parked.
Correct the speedometer if you have changed your tire size from stock.
Change or disable the Tire Pressure Monitoring System.
Transmission Shift Firmness
Change the shift firmness of an automatic transmission.
This gauge option shows the transmission temperature. This information is used in defuel settings to help prevent heat damage to the transmission. (This gauge option is not available on all vehicles.)
Transmission Temperature Warning
This gauge option shows the transmission temperature. This information is used in warning settings to alarm when the transmission temperature limit is exceeded in automatic transmissions.
Unlock Driver Door
Disable this feature so all of the vehicle doors will unlock with one press of the button on the remote.