Question about 1994 Chevrolet S-10 Blazer

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The mileage and speedometer are not showing up on my 1994 chevy blazer tahoe LT. Everything else works though. Please help!!! fuses are good.

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Im pretty sure the speedometer runs off of a VSS (Vehicle speed Sensor) on the tail shaft of the transmission. Check to make sure the connection is clean and connected properly and maybe replace it. Another thing to check...Where the speed sensor goes into the transfer case. Jack a rear wheel up so you can turn the driveshaft. Have the speed sensor out, and look in the hole at the shaft. There is a magnet, actually looks like several teeth. They must rotate with the shaft. That is the thing that gives the sensor a signal. have a good day !!

Posted on May 17, 2011

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