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International Automotive Technicians Network
Re: 97 GMC Van Speedo Calibration
Posted to Technical Discussion Forum on 8/5/2004

OK, fixed. Got a VCI reconfiguration authorization number from a helpful dealer tech, entered it and it's done.

Just a note on the speedo operation, it is 'twitchy' and moves in discrete increments. I think this is a side effect of a previous recal that was ... Login to read more.