High or Low Upshift or Downshift Speed
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
High or Low Upshift or Downshift Speed
| Checks | Cause |
|---|---|
| DEFINITION: An upshift or a downshift, or TCC apply, that occurs at a speed outside of the calibrated range. Refer to Shift Speed . | |
| ECM/PCM Calibration Information | Incorrect calibration in the ECM/PCM. |
| Throttle Position (TP) Sensor | Misadjusted or faulty TP sensor. |