High or Low Upshift or Downshift Speed. Oldsmobile Eighty Eight 1999

For 1990-2009 cars only

Makes 🢒 Oldsmobile 🢒 1999 🢒 Eighty Eight 🢒 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