Torque reduction when shifting
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The transmission control module (TCM) requests torque-limiting from the engine control module (ECM) in order to limit torque immediately before shifting. Torque limiting can occur at three different levels: 25 %, 35 % or 45 %. Limitation lasts for less than 1 second.
0 = No torque limiting requested
25, 35, 45 % = Torque limiting requested