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Discussion Starter #1
I found a used gv unit but the guy says it only works with the mechanical speedometer. Is he talking about the cable or the gauge? These trucks have the speed sensor at the wheels. I wouldn't think this would have anything to do with an overdrive unit. What do you all think?
 

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Yes, the speed sensor signal is off the rear axle speed sensor. The automatics have a output shaft RPM sensor, but your manual does not include.
 

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3,762 Posts
So how much are used GV's going for these days.
 
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