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Home >> GMC >> 2022 >> Acadia AT4 >> Repair and Diagnosis >> General Information >> Reset Procedures >> Programming And Setup >> Repair Instructions >> Q77 Transmission Control Solenoid Valve Characterization Programming >> Solenoid Reprogramming Procedure
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Solenoid Reprogramming Procedure

Perform solenoid characterization reprogramming after one of the following service procedures:

To perform solenoid characterization after a transmission component replacement:

  1. Document the new Transmission Unique Number (TUN) or Part Unique Number (PUN) as required.
    • The TUN location may be found here: Transmission Identification Information . Since the TUN can be difficult to access when the transmission is installed in the vehicle, ensure you document the 16-digit TUN prior to installing the transmission in the vehicle.
    • The PUN location may be found here: Control Valve Solenoid Body Identification Information . Before installing the control valve solenoid body onto the transmission, document the 16-digit PUN. If the control valve solenoid body PUN has not been saved for reference, it may be necessary to disassemble the control valve solenoid body from the transmission to clearly read the control valve solenoid body PUN.
  2. Log into TIS2Web/SPS.
  3. Type the vehicle identification number (VIN).
  4. Perform the SPS Transmission Control Module programming event.
    • Select "Transmission Control Module - Programming" to update TCM calibrations and Solenoid Characterization data.

      OR

    • Select "Transmission Control Module - MCVM Operations" to update Solenoid Characterization data only.
  5. From the "MCVM (Mechanical Characterization and Virtual Matching) Operation Selection" screen, select the applicable service procedure to be performed. You will be prompted to provide the necessary Transmission Unique Number (TUN) or Part Unique Number (PUN) when replacing a transmission part.

At this point, the system will read the VIN from the engine control module (ECM) using the multiple diagnostic interface (MDI) and then retrieve the applicable genealogy data tree from the cloud. This data tree accesses the original characterization data so that it may be updated with the new component information. The system acquires characterization data for the given TUN/PUN via the cloud and updates the genealogy tree. The TCM is updated with the correct solenoid characterization data, and the cloud is updated with the new genealogy relationship.