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Formally called the Chevrolet C/K, C/K is a series of trucks manufactured by General Motors and marketed under the Chevrolet and GMC brands. The C/K line includes pickup trucks, medium-duty, and heavy trucks.

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thm700r4 transmission will not propel in either direction

vehicle will not move

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First check to make sure you have fluid in the tranny and that it is clear. If so you may have a bad modulator. If not you can try adding fluid and look for leaks. You should also check that the gear selector is moving when you move the shift lever. At this point I would recommend taking it to a professional---big bucks--sorry.

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