Conditions for Setting the DTC

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The TCC release switch is closed 6 times for 4 seconds each, during one trip.
The TCC slip speed is between -20 and 60 RPM with the gear ratio between 0.65:1 and 0.75:1.