I believe you would need an oscilloscope. On my 2000 Silverado the
speedo signal is a 5 volt square wave. Either 200 or 400 pulses per
mile. I can't remember which.
regards,
Leon
>------------------------------
>
>Date: Fri, 23 Jun 2006 15:41:21 +0100
>From: Williams Grant Civ 412 AMXS Det 2/MXAET <Grant.Williams@kirtland.af.mil>
>Subject: [oletrucks] Electronic Speedo Testing
>
>Anyone know the right way to check a GM pulse generator for an electronic
>speedometer? All my wiring and the gauge are good. I am not sure what to
>look for volt wise at the pulse generator...
>
>
>
>Grant
>
>------------------------------
|