Download TRANSMISSION HARSH SHIFTING – NO DTCS – MILEAGE OVER 20,000 MILES (32,187 KM) SERVICE PROCEDURE 1. If DTCs are present in the transmission control module (TCM) / powertrain control module (PCM), perform normal diagnostics. 2. If no DTCs are present and mileage is below 20,000 miles (32,187 km) reprogram TCM / PCM and retest. 3. If no DTCs are present and mileage is over 20,000 miles (32,187 km), fluid should be drained and checked for excessive contamination. If fluid is clean, the valve body should be replaced and TCM / PCM updated to the latest calibration level. Refer to WSM, Section 307-01B for main control valve body replacement. 4. If excessive contamination is present, install a new transaxle assembly following normal prior approval guidelines. Reprogramming Reprogram the PCM and TCM to the latest calibration using IDS release 45.8 and higher. Calibration files may also be obtained at the website.