C2 Learn Mode
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Following the Reverse Mode step, the scan tool exits Fast Learn and the only adaptive cells that remain to be learned are the adaptive volume data for C2 clutch. The vehicle must be driven in order to make at least three 3-4 upshifts on the same ignition cycle and at steady throttle position. This data is learned by the TCM intentionally overfilling C2 clutch. Once this overfill is corrected, C2 clutch volume is learned and all special Fast Learn actions are completely disabled.
NOTE:
The technician should verify that transmission shift quality for all types of shifts is acceptable prior to releasing the vehicle to the customer.