During the course of helping a co-worker repair a TCC slip, we analyzed some graphs and noticed some interesting info on how the PCM behaves and how it "sees" and adapts for a TCC slip.
All the following graphs were taken on one test drive of a 98 camaro with a 4L60E EC cubed. The required fix was to overbore the TCC regulator valve and the AFL valve and replace them with oversize valves. They both showed significant wear using a wet air test technique. No other repairs were made and the transmission was not removed from the car. The fix isn't the point of this article though, because I'm sure most people reading this article are probably aware of valve body wear issues that cause the TCC slip. The point, is how advanced the computer strategy is, and its ability to "see" and adapt to TCC slip.
