FastLearn Procedure: Troubleshooting
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
If FastLearn will not run and the above stated conditions have been met, ensure the following:
- Transmission fluid temperature is between 40-100°C (104-212°F).
- Closed throttle and engine at warm idle RPM
- No active DTCs
- All speed sensors are connected and functioning properly.
- Internal mode switch is functioning properly
- Main pressure is within specification.
- TCC slip speed less than 100 RPM at idle in PARK/NEUTRAL