Q: now i understand mean p1700 on 1998 Cadillac Catera

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i take to repair shop they said my radiator is broke and my antifreez is going into my transmission even he find out in antifreez bottel have transmisson oli my question is if i replace raditor my car will run fine cuz my car skip on first gear other than that is run smooth thanks you so much to anwer my question it's really help i really thankfull to you
(1) Answer
You need to replace the radiator and flush out the cooling system of oil and flush the transmission to remove all of the coolant. If you don't do both, the coolant hoses will deteriorate and fail risking the engine, and the transmission will fail due to contamination in the transmission fluid.
The transmission may already be damaged, I recommend you go to a Cadillac specialist for help.
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