High or Low Upshift or Downshift Speed. Buick Park Avenue 2005

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2005 🢒 Park Avenue 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 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.