P0884 - TCM Power Input Signal Intermittent Possible causes Transmission Control Module (TCM) Power and/or Ground connection Faulty Transmission Control Module (TCM) Transmission Control Module (TCM) harness is open or shorted Transmission Control Module (TCM) circuit poor electrical connection
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if it is a mems unit , it will need to be programed to the key fob and alarm . (there is no way round it).
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