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Q: we have norstar.my check engine light stays on on 2004 Cadillac CTS

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
our check engine light stays on. the diagnostic shows transmition trouble. no one can find problem. car runs fine for over a year. had sensor replaced still stays on. now we can not get our PA vehicle inspection sticker. what can the problem be?
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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With out knowing the fault code there is no way I can help you. Please send the information for the fault code that is turning the check engine light on on your 2004 Cadillac CTS.
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