Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Jeep Grand Cherokee TrackhawkFACTORY OEM SERVICE PROCEDURE
Module, Drivetrain Control (DTCM): Installation
- Position the Drivetrain Control Module (DTCM) (3) into the mounting bracket.
- Slide the DTCM into place until the locking tabs are secure.
- Connect the wire harness connector to the DTCM.
- Install the cover panel onto the electronic module tub (4).
- Connect the negative battery cable. Refer to CABLES, BATTERY, INSTALLATION .
- If replacing the DTCM, the transfer case, or both, use the scan tool to perform the Non-Volatile Memory Reset procedure.
- Perform the DTCM verification test. Refer to DTCM VERIFICATION TEST .
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.