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TUNING THE VEHICLE
PREPARATION: MANAGING OTHER ELECTRONICS
1. Disconnect the ABS fuse. This can be reconnected after the
tune installation is complete.
2. Disconnect the trailer pigtail, and all automatic transmission
fuses or relays. This can be reconnected after the tune
installation is complete.
3. Turn off all factory installed electronics, including:
• Headlights, header, air conditioning, stereo, DVD players, etc.
Failing to turn off ALL electronics can prevent successful installation.
4. Disconnect additional electrical appliances. Remove any
chargers or electrical devices connected to the following:
• Cigarette lighters, USB ports, or other types of electrical outlets.
5. Disconnect any other aftermarket electronic device including:
• Trailer brakes, stereo, alarm, CB, remote start, DPF delete, Sirius/XM
satellite radio, as well as QualComm Vehicle Data Devices.
6. Disconnect any electrical device that was installed after the
vehicle was released from the factory. Disconnect these items
from the fuse box or other power connection. You do not
have to completely physically uninstall them; must make sure
they are not getting power.
Make sure that electrical devices are turned off or disconnected as
described below while you are installing the HDGT tune to your vehicle.
Once the tune is installed, you can reconnect them and turn on all of the
electronics that you normally use.
IMPORTANT NOTE
Do not use the HDGT with any other electronic device designed to
increase horsepower (such as a fooler wire or plug-in box).
