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...uh, which dealership(s) can do that?
...I ask because both of our Toyota-made, defunct-GM Pontiac, Vibes' ('04 & '09), show a consistent "+2 mph" high reading on the speedometer, but NOT when read through the OBD-II connection via ScanGauge-II from the ECU.
...hence, at least for our Toyota/GM hybrids, it appears the "+2 mph" offset is being "added" at the dashboard display and NOT within the ECU...which would seem to rule out subsequent dealership reprogramming capability...but who knows?
...but, I'm curious to learn otherwise.
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