High or Low Upshift or Downshift Speed
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. 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. |