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Home >> Jeep >> 2019 >> Grand Cherokee Laredo, AWD, Full Time T/Case Control >> Repair and Diagnosis >> External Pages >> Different car >> Section 342 (Electronic Control Modules (Service Information)) >> Module, Transmission Control (TCM) >> Module Programming >> TCM Programming
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TCM Programming

WARNING: This page is about a different car, the 2021 Jeep Grand Cherokee L. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

A new Transmission Control Module (TCM) is supplied with generic software. When replacing a TCM, it must be programmed with vehicle specific software.

NOTE:

Failure to properly program the TCM will cause DTC(s) to be set.

  1. The following conditions must be met during the TCM programming procedure:
    • Battery must be maintained between 10 and 16 volts. Connect a battery charger if necessary.
    • Ambient temperature must be between 0°C (32°F) and 60°C (140°F).
    • Gear selector must be in PARK.
  2. With the scan tool and Dealer Connect, download the appropriate TCM flash file to the scan tool.
  3. Turn the ignition ON.
  4. Following the menu on the scan tool, program the TCM.
  5. Perform the TCM ADAPTATION procedure. Refer to MODULE, TRANSMISSION CONTROL (TCM), MODULE PROGRAMMING .
  6. Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST - 8HP50/850RE or TRANSMISSION VERIFICATION TEST - 8HP75 .
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