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International Automotive Technicians Network
Re: 07 Buick- Jumping Speedo- Network issue?
Posted to Technical Discussion Forum on 3/7/2020

Well said Eric. I've used scopes for many years, but not as a primary diagnostic tool on any of the GM vehicles that my work has primarily focused on for the past 40 of 52 years in this field.

Coupled with the Data Bus Diagnostic Tool (DBDT) to graph voltage... Login to read more.