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Donald 1/31/2011

1991 GMC R1500 Suburban Base 8 Cyl 5.7L

Transmissions & Drivetrains

Is there any fuses or relays that will cause the speedometer to not work?

I think it's on a pulsating unit. I have replaced the sensor in the transmission from a magnetic style to a pulsating gear to gear. I don't know if they are different or the same. I also don't know if it needs constant electricity or if it generates it's own. Please help. Thanks

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