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Hard 1-2 shift '94 Estate

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TylerH860

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As the title states my 94 Roadmaster feels like its shifting harsher than usual. Last trans service was 30k ago. Is there a way to adjust (electronic valve body IIRC) or am I looking at an eventual rebuild.

Its not a violent shift, just harsher than I like and prefer keeping the car top notch. Current mileage is 104k. This seems to coincide with a service engine soon light which I plan to get the code in the morning. The light remains off until I put the car in gear.
 
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My guess is that the trans is getting bad input data from one of the sensors,such as the TPS. When you download the codes you will probably find the culprit.
 
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