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GT Platinum Diesel (40420)
GT Platinum Diesel (40420)

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Our Price: $549.00

Product Code: BUL40420


The Bully Dog GT 40420 is a downloader AND a monitor all in one compact electronic device! Considering all the features contained within the GT it is amazing that installation is as easy as plugging the unit into the OBDII port and performing a simple download to the vehicles ECU. What's more convenient is that the Bully Dog GT 40420 works on almost all late model diesel pickups and even some commercial applications.

The Bully Dog GT 40420 features the all new patent pending Driving Coach feature. According to outside research studies, drivers can save up to 37% on their monthly fuel bill simply by adopting better driving habits. The Driving Coach feature shows people specifically where their current losses are coming from so they can make adjustments to correct their inefficiencies. In doing so, the Coach provides audio and visual feedback to instruct a driver on how to learn better driving habits. Read more about the driving coach feature below.


The Driving Coach is a special feature designed to help drivers drive more efficiently. It coaches drivers into better driving habits by providing real time visual and audio feedback as to how efficient a driver is driving. The driving coach also provides the driver with a "grade," on how efficiently they drove during a particular trip. This makes driving efficiently, constructive, and fun! Drivers can use the Driving Coach to coach themselves into improved driving habits. Every driver can challenge themselves to be "The perfect driver."

Bully Dog GT application chart/ vehicle info sheet
Applications Include:
  • 1999-2015 F-Series 250-550 7.3L/6.0L/6.4L/6.7L Powerstroke (Excludes 2013+ Cab & Chassis & Manual Xfer Case)
  • 1999-2005 Ford Excursion 7.3L/6.0L Powerstroke
  • 2003-2015 Dodge Ram 2500-5500 5.9L/6.7L Cummins (2013-2015 models require 42214 Unlock Cable)*
  • 2001-2015 GM 2500/3500HD 6.6L Duramax
  • 2006-2010 GM Kodiak/Topkick 4500/5500 6.6L Duramax
  • 2006-2014 GM Savannah/Express 2500/3500 6.6L Duramax
Faster - Bully Dog Hill Climb Demo
Bully Dog Bully Dog Subscribe2,003 Add to Share More 176,596 41 9 Uploaded on May 6, 2011 Fuel Economy is important. Not even the most diehard diesel fanatic enjoys paying an arm and a leg to fill up his ride. Thankfully, adding much needed po
Safer - Bully Dog Safety Defueling Demo
  • Bully Dog GT 40420
    • Added horsepower and torque
    • Improved fuel economy
    • Safety Defueling
    • On-the-fly power level adjustment
    • Four different power levels to choose from
    • Easy installation (20-40 minutes)
    • Free internet updates and upgrades
    • Monitor and display vehicle parameters (PIDs)
    • Full Color display with multiple color themes
    • User set daytime and night time driving modes
    • Display current gear on vehicles with auto trans.
    • Vehicle specific download features
    • Initiate DPF burnoff on ‘09 GM and Dodge diesel
    • Defuel based on user set safety parameters
    • Read and Erase Diagnostic Trouble Codes
    • Display instant fuel economy and trip fuel economy
    • Exclusive Driving Coach feature, Patent Pending
    • Universal Suction Cup Mount included
    • Holds up to 10 custom tunes (not included)

    Performance Gauge Functions:

    • Real Time Fuel economy
    • Average Fuel economy
    • Trip Fuel economy
    • Load %
    • Coolant temperature
    • Fuel rail pressure (diesel vehicles)
    • Manifold absolute pressure
    • Engine RPM
    • Speed
    • Timing position
    • Air intake temperature
    • Mass Air Flow (grams/sec.)
    • Throttle position
    • Fuel level
    • Battery voltage
    • Ambient air temperature
    • Transmission temperature
    • Pyrometer #1 & 2 optional (diesel vehicles)
    • Boost (diesel vehicles)
    • IPW: injection pulse Width (diesel vehicles)
    • Barometer (diesel vehicles)
    • Oil temperature (diesel vehicles)
    • ICP: injection control pressure (diesel vehicLes)

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