thanks for all of your help and input

fortunately the problem just got repaired,

one of the terminal inside of the connector going to the TCM ,(on a diesel it only controls the trans, so its not the PCM) was corroded. even though the wire checked ok when probed, it wasnt until the plug was removed and taken apart (its a 2 piece plug, unlike our older cars use), and it broke connection inside of there

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