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The Cobalt is a closed system. That means you can not add trans fluid, it has to go to the dealer to get it done right.

rev. this is not a closed system. you can add fluid on top of the trans there is a fill cap. best thing to do if your not sure is to drop the pan and change the filter and add 7 qts of fluid. Dex3

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11y ago

What else can I help you with?