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ADAPTIVE LEARN for GM 6 Speed Transmissions with
'Learn' TCM
The transmission adaptive values learn is a
procedure for 6-speed automatic transmissions in which the TCM “learns”
individual clutch characteristics. Once the TCM learns the clutch data, the
procedure translates it into the adaptive data cells, which the TCM uses for
clutch control during shifts. The scan tool lets you initiate the
transmission adaptive values learn procedure, which you should perform after
any of these transmission repairs:
Transmission internal service or rebuild
Valve body repair or replacement
Control solenoid valve assembly replacement
TCM software or calibration update
Any service in response to shift quality Failure to perform the procedure after one
of these repairs may result in poor transmission performance or set a trouble
code. Before you begin the transmission adaptive values
learn procedure, make sure of these conditions:
Block the drive wheels
Apply the parking brake
Apply the service brake
Zero percent throttle and no external engine RPM control
Transmission fluid temperature (TFT) between 70ºC–100ºC (155ºF–215ºF)
Cycle the transmission gear selector from park to reverse three times
to purge air from the reverse clutches If, at any time during the procedure, the
required conditions aren’t met, the process may abort and you’ll need to
start over from the beginning. Now you’re ready to begin the transmission
adaptive values learn procedure:
Use your scan tool to navigate to Transmission Adaptive Values Learn:
Module Diagnosis
Transmission Control Module
Configurations/Reset Functions
Transmission Adaptive Values Learn
Select the Transmission Adaptive Values Learn procedure. During the
procedure, the scan tool data display will provide operator instructions.
Follow the instructions as required.
Once the procedure is complete, shut the engine off and power down the
TCM. You’ll lose communication to the scan tool.
Restart the engine. This will complete the transmission adaptive
values learn procedure. After the procedure is completed, the transmission may
remain in neutral. Turn the
ignition off and remove the scan tool.
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TRANSMISSION EXCHANGE CO is located at 1803 NE MLKing Blvd.,
Portland, OR 97212. Ph. 503-284-0768, 800-776-1191 Fax 503-280-1655 E-mail mail@txchange.com
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