Vehicles are more complicated than ever, and with so many electronics effecting the interactions of components; both the torque converter supplier and the transmission shop/reman have to understand and share information to be successful. PI Curve Relearn:

1. Scan The QR Code Before Installing The Valve Body
2. Copy And Record The Code 2019+ transmissions use a remote Torque Converter Clutch (TCC) solenoid. This solenoid in conjunction with an accumulator allows for greater control over the torque converter clutch to improve garage shift performance. Each solenoid has a unique tuned flow rating. On the side of the solenoid is a RECTANGULAR 2D QR matrix which contains the PI curve of the solenoid. When replacing valve body assembly or when electronic parts are replaced, the PI curve must be updated.
3. Use a smartphone or code decoding application to view data. When inputting the data into the scan tool, the data must be exact. If entered incorrectly or not entered at all, poor transmission performance is possible.
4. Start vehicle and leave in PARK until the transmission temperature reaches 100°F.
5. Once temps are above 100°F, and the fluid is full, perform a RELEARN with a scan tool that can perform a re-learn or “Quick Learn.” (DO NOT DRIVE THE VEHICLE UNTIL A RE-LEARN IS COMPLETE). We recommend ALWAYS performing a transmission “relearn” or “quick learn” with a factory scan tool or equivalent BEFORE driving the vehicle or putting into gear.
6. After the relearn, drive the truck softly for a minimum of 100 miles so the computer can adapt accordingly.

The more you know, the more you are aware of what to ask your customer so that you can both be confident in a job well done. Steve Hilton