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Re: Transmission shifting rough
Welcome to AF.
When you had the service at 100,000km was it flushed or just a pan drop consisting of ATF and screen filter performed?
The hard/harsh shifting is most likely a pressure control solenoid (PCS) problem. High line pressure is being commanded on. Best thing to due is get it scanned and see if a P1811 DTC is stored.
The problem you are having is very common on 4T65E autotransaxles. Corrective action consists of replacing the PCS.
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