Faqs

My GT will not turn off

Flip switch on OBDII block to key, or check where the power wire is run and make sure the fuse does not have constant power.

Vehicle will not start after install, what do I do?

Go to show settings, check STATUS/DOWNLOAD. If it says RECOVERY, go back to INSTALL DOWNLOAD to go through the RECOVERY MODE. This will load the factory file back on to the vehicle computer. If the download status says installed, go to uninstall GT from the main menu.

What is Engine warm up mode on my GT Diesel?

This is a feature that is enabled out of the box. The truck will run in the “NO POWER” mode until the engine coolant reaches the set temperature. The default temp is set at 172 degrees F. To change this temperature, or turn it off, go to the Main menu->Vehicle Setup->Set Defuel levels->Start up coolant temp. This can be lowered as low as 150 degrees F. It can also be turned off by pressing Defuel Off. To save changes just hit Go Back.

What is the power wire, where does it go and what does it do?

The power wire supplies key on/off power to the GT tuner. This will allow the device to power on and off with key cycles. Install the power wire into a 10 to 15 AMP key power fuse. Find this fuse by probing with a test light, or voltmeter to see if it has power when the key is on and no power when the key is off this is an ok fuse to use. (You may notice a black ground wire in the power wire, this will not be used! The OBDII block will be your ground for the key on/off power.)

How often should I update my device?

We recommend that you update the device every 6-8 months if it is a newer vehicle, as we come out with updates on these vehicles regularly. If an update is required you will need to insure that the device is fully uninstalled from your vehicle. However if you are not experiencing any issues, there is not a need to update. In some cases it is better to not fix what isn't broken.

What is VIN mismatch?

The VIN or part number that the tuner is currently locked to, does not match the one that it is reading off the PCM. Tuner could be locked to another vehicle. You can return to the previous vehicle and return the vehicle to stock. If this is not possible, most of our tuners can be reset over the phone for a Fee. Also could be that the PCM in the vehicle may have been flashed after the tune was installed, Thus erasing the Bully Dog tune off the ECM.

How can I change the speed displayed on the Diesel GT to match my GPS?

First you will need to figure out how far off the speed is in percentage. Once you know what percentage it is off by you can go to Main menu->Vehicle settings/Vehicle setup->Adjust speed display. Once there you can adjust the speed displayed on the Device up, or down by whatever percentage it is off. To save, press Go Back.

What fuses do I have to pull on my 99-01 7.3L Powerstroke?

16, 19, 29. Once the download is complete, reinstall all fuses.

What fuses do I have to pull on my 01-02 Duramax?

In the driver side dash: SEO IGN, RDO1, RAP2. Once the download is complete, reinstall all fuses.

How do I correct the MPG reading on the GT so it reads correctly?

First you need to figure out what percentage the MPG reading is off by. Then on the tuner go to Man Menu->Vehicle set up/settings->Adjust economy display. Then increase the percentage if the GT is reading lower mileage than you are getting. Decrease the percentage (go negative) if the GT is showing higher mileage than you are getting.

What fuses to I have to pull on my 02-03 7.3L Powerstroke?

19, 35, 41. Once the download is complete, reinstall all fuses.

How do I tell what software version my GT is on?

Go to Main menu->Show Settings, and it will be next to SV, SW, or Software depending on the version. Example: 1.1.5.1.

What fuses do I have to pull in my 03-05 Duramax?

Under the hood: TBC BATT, TBC IGN1, RADIO, INFO. Once the download is complete, reinstall all fuses.

Why won’t my Power Pup turn on when plugged into my truck?

Check the Cigarette/Cigar lighter fuse. This is what powers the OBDII port on the vehicle.

How do I update my GT Tuner?

1. Connect the Micro SD card using a card reader.

2. Connect the GT with the Micro SD card installed by using a USB cable. Do not use the HDMI cable or the OBDII adapter plug to update the GT.

3. Download and install the Update Agent application.

If it is already installed, skip to step 5. You can see if it is already installed by checking your Start Menu under All Programs. The Update Agent will be listed under the Bully Dog Technologies folder. The following instructions are intended for Microsoft Windows computers.

4. You can download the installation file at official website.

Run the application – you do not need to save it.

5. Run the application.

If you have just installed it, the Agent may already be running.
You can show the Update Agent by right-clicking the icon in the system tray at the bottom right corner of your screen, and then clicking Show Agent.
Or you can stop the previous instance of the Update Agent and open a new one – either option is a winner.
If you have already installed the application in the past, it should be listed under Bully Dog Technologies in your computer’s list of All Programs. Just double-click the Update Agent icon in that folder to let it start.

6. Let the Update Agent search and download available update files.

7. Click the Update Button and let it write the update to the SD card.

8. NOTE: This step varies depending on how you have connected the Bully Dog to your computer.
If you have the Micro SD card connected to the computer:

Disconnect it from the computer and put it in the GT.
Then turn the GT on by connecting it to a computer or to a vehicle and turning the key to the Run position.

9. Go to the Main Menu on your GT.

10. Go to the bottom of the menu and choose Update GT Software.

If the Update GT Software option is not available on the Main Menu - Choose Update GT Firmware.

Scroll to the top and choose Change Vehicle, then select your vehicle from the list.

11. Confirm that you want to load the file.

12. Let the GT load the file and reboot. Do not disconnect it or turn it off during this part of the process.

The GT has now been updated!

Do you offer DELETE TUNING?

Bully Dog DOES NOT offer any delete tuning for any vehicle in the United States. Bully Dog is 100% EPA compliant.

Why does my 2011-2015 Duramax not have an Extreme power level?

We have found with our testing that the power levels that we consider “EXTREME” (100+hp) cause the truck to regen too frequently, setting off trouble codes. We are continually trying different things to better our products, so there may be an EXTREME option in the future.

How to set up the Driving coach on a GT device?

Before the Driving Coach can give you accurate information, it is important to make sure that the GT is showing the correct speed. In the sections below, you will find specific instructions for using the Driving Coach to become the best driver you can be.

Set Economy Goal

This option will allow you to select a fuel economy goal. The Driving Coach will use the economy goal to calculate your driving grade.

It is very important to select an economy goal that is realistic for both your vehicle and the kind of driving you will be doing. If you will be driving mainly in the city or on the highway, choose a goal that is very close to the advertised fuel efficiency for your vehicle in that type of environment. If you will be doing a mixture, choose an economy goal between the advertised city and highway mileage for your car.

Reset Average Economy

This option will clear the values stored in the GT for the average fuel economy, the number of gallons used, and the grade in the Driving Coach.

Adjust Acceleration

This option will allow you to select the GT sensitivity for the acceleration and deceleration for your vehicle. (how strict the coach will grade your driving habits.)

Coach Sound Setup

This option will allow you to turn the Driving Coach sounds on or off.

Showing/Hiding the Driving Coach

The driving coach is always running, even if you choose not to have the information displayed. You can show or hide the driving coach on the Main Display by holding one of the four bottom left buttons until the display cycles through to the gauge style that you want.

How to set safety defuel settings on a GT Diesel?

Set the temperature level at which the extra power level settings on your GT are automatically turned off to protect your engine from damage.

Do this by going to the main menu->Vehicle Setup->Set Defuel Levels.