
INSTALLATION MANUAL
Dodge Cummins Unlock Cable Part #42214
For a complete installation video of this product, visit www.bullydog.com and
also the Bully Dog youtube page, www.youtube.com/user/BullyDogTech
Doc. 42214-99 v1.O
Not legal for sale or use in California on pollution-controlled vehicles.

42214
DO NOT connect the Unlock Cable and/or the Unlock OBDII Harness until the GT
instructs you to do so.
SETUP PREVIEW
THERE ARE THREE PARTS TO UNLOCKING AND THEN TUNING YOUR VEHICLE, EACH PART IS DESCRIBED BELOW:
Dodge Cummins Unlock Cable
42214
Dodge Cummins Unlock Cable
CONTENTS
Setup Preview ...........................................................2
Pre-Tune Checklist ...................................................2
Parts List ....................................................................3
Part 1 ......................................................................4-6
Pre-Install Checklist ...................................................................4
Update Your GT ..........................................................................4
Physical Installation ...................................................................5
Unlock Process ...........................................................................6
Part 2 ......................................................................7-8
Illustration .................................................................................7
Part 2 List ...................................................................................8
Part 3 ..........................................................................9
Part 3 List ...................................................................................9
Final Installation .................................................. 10
Part 1: Initialize the unlock process using the original OBDII harness that came with the GT.
Part 2: Start the unlock process using the Bully Dog UNLOCK cable harness. (included in this kit with the red
tag/tape on it)
Part 3: Complete the unlock process and then install download using the original OBDII harness that came with
the GT.
PRE-TUNE CHECKLIST
BUSINESS HOURS
Technical support is available during regular business hours (Monday-Friday 8am-5pm MST)
and can be contacted at 940-783-9915.
INTERNET ACCESS
In the event that technical support is needed, internet access may be required to troubleshoot.
ALLOW ENOUGH TIME
Make sure you have at least two hours to complete the unlock and installation process.
CHECK YOUR BATTERY
Before installation, ALWAYS ensure that the batteries are fully charged. If you are not sure,
connect a battery charger before you begin installation.
TURN ELECTRONICS OFF
Leaving electronics on (including the stereo) may prevent a successful download. Make sure
electronics are o for the entire process.
THE UNLOCK
Do NOT interrupt or disconnect the GT at any point during the unlock process.
1 2

PARTS LIST
Dodge Cummins Unlock Cable
Your Unlock package (42214) should include the following items:
1. Unlock Cable OBDII harness block
42214
Dodge Cummins Unlock Cable
2. Unlock Cable 3 Plug connector
Part 1
A: Pre-Install Checklist
Conrm that you have all the parts shown below before proceeding.
B: Update Your GT
Install the Update Agent on a Windows computer.
(www.bullydog.com/update_agent.php)
1. Plug the MicroSD card into the
reader and plug the reader into
one of your computers’ USB ports.
2. Open the Update Agent
• Launch the Update Agent from
the Windows Start menu if it
isn’t already open.
3. Select your vehicle on the
Update Agent using the “Change
Application” button.
4. Select “Update”
• Once the Agent indicates that
the update is complete, place
the MicroSD card into your GT
and proceed with installing your
GT.
42214
3 4