Intermittently, the D/S/F window will go 1/2 - 3/4 up or down, then stops. I'll have to wait a few minutes and if it doesn't close/open by then, I'll have to repeat the process (n)times.
Drivers Front Window Problems on 1994 Cadillac DeVille
Possibly your window motor is failing and it overheats and stops, Thats why you have to wait for it to cool slightly to continue, You can find this estimate here www.repairpal.com/estimator and find a repair shop here www.repairpal.com/directory
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I had same problem. I needed a new window motor and found news ones on Ebay for $30 and free shipping. I put it in myself......problem fixed!