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International Automotive Technicians Network
Re: 07 Buick- Jumping Speedo- Network issue?
Posted to Technical Discussion Forum on 3/5/2020

One of the first things I did was monitor all four wheel speed aemsors on a test deive. They were normal, not jumping at all, but when I look at the vehicle speed pid in the scan tool it jumps as the speedometer does. Login to read more.