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Message: [QUOTE="me2, post: 421183, member: 3825"] So is the problem that you are locking the TC with a poor sequence, ie locking it too fast with the manual switch or is the problem that the TC is locked period ? Its fairly easy to create a circuit that gently applies the voltage to the valve to lock it up in a manner that doesn't damage the TC. If that is, in fact, the problem. The other issue is shifting. The TCM commands the TC to be unlocked during some shifts so cushion the clutches during engagement. When you lock the TC during the shift and the TCM can't unlock it, there is a lot more stress on the clutches during that initial lock. However, a locked TC puts a lot less torque through the transmission than an unlocked TC does. So that helps the transmission when its not shifting. The best would be to figure out when the TCM is shifting the transmission and let it unlock it and then gently lock it back up again as soon as its done. [/QUOTE]

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