The 2020 Jeep Grand Cherokee Trackhawk and its 6.2L engine come from the factory with a PCM locked against outside reprogramming. HP Tuners' PCM-0J-939AA replaces that unit with a physically modified version that ships with the write-protection removed, allowing full calibration through VCM Editor in place of the sealed factory tune.

HP Tuners PCM-0J-939AA Compatibility Notes:

• Matched to 2020 Jeep Grand Cherokee Trackhawk applications equipped with the 6.2L engine.
• Requires PROM installation or a computer flash to configure the unit for the specific vehicle before use.
• Pairs with VCM Editor software for full calibration access once installed.

Emissions Disclaimer

HP Tuners designs and manufactures software and hardware tools for vehicle diagnostics, scanning, logging, calibration, and data acquisition purposes. The authorized use of such tools is to bring a motor vehicle into emissions compliance and/or to maintain emissions compliance, as well as for use on competition/racing and other exempted vehicles. HP Tuners does not create or provide tunes or pre-made calibrations.

HP Tuners' Terms of Use, policies, and agreements mandate that users shall comply with all local, state, and federal laws. In using HP Tuners software and hardware tools, you are representing, warranting, and agreeing not to use, employ or allow any HP Tuners tools to operate as a defeat device or to violate emissions compliance in any manner whatsoever. You further represent warrant and agree that the HP Tuners tools shall only be used by manufacturers, calibration businesses, and professionals to develop emissions-compliant and/or exempted calibrations.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART