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Old 09-13-2009, 06:46 PM
erm
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Reflashing the PCM, and querying in through the Star Scan tool, is a dealer only operation, I'm afraid.

Even if some gears work, a failed or partial signal from the TCM or the PCM will cause the problems you are describing. It will also, in some instances, cause a transmission overpressure condition, creating leaks.

Given your mileage you may be experiencing a linkage adjustment issue but I don't suspect an internal transmission failure.
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