Hi TheresaStarkey,
Thank you for the donation.
Harsh shifting are usually due to faults with the transmission control system and it sould be any of the sensors. Since the CEL is indicating, get it scanned at Autozone, they provide free scanning, and let me know the exact code.
It could be related to the transmission shifting.
Apart from fluid changes, there are nothing you can do if the transmission is failing. However if the problem is due to solenoids, the repair might not be too expensive.
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Wednesday, November 11th, 2009 AT 2:11 PM