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Q: Tranny kickdown on at freeway speeds causes massive white exhaust.

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Massive amount of white exhaust under hard acceleration

My car has 99000 miles.
My car has an automatic transmission.

Hello there, white smoke under acceleration with your 2008 Cadillac CTS can be caused by many different issues. When white smoke is seen it is almost always due to coolant being burned in the engine. The most common causes of the cooling being burned and intake manifold leaks, head gasket failure, or intake manifold gaskets. This is a serious issue and should be diagnosed and repaired as soon as possible. A qualified Technician such as one from YourMechanic will be able to diagnose your white smoke fault and make any repairs required.

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