rcampbell0150@gmail.com Posted April 4, 2016 Share Posted April 4, 2016 I have a 98 ch612. The speedo does not work. Quote Link to comment https://www.bigmacktrucks.com/topic/44653-speedo-not-working/ Share on other sites More sharing options...
Tbear Posted April 4, 2016 Share Posted April 4, 2016 I have a 98 ch 613 same thing happened I had to put a new speedo head in . it was about 450.00 dollars. Mine came with a chart to set up for the correct speed. I think it is close. The reason for the high cost Is the speedo head is electronic good luck Quote Link to comment https://www.bigmacktrucks.com/topic/44653-speedo-not-working/#findComment-329522 Share on other sites More sharing options...
Keffer inc Posted April 4, 2016 Share Posted April 4, 2016 Before you spend that much money on a speedometer, check the speed sensor on the rear of the transmission. Check the wiring and plugs as well. If it is the sensor, you wont have cruise control either. if that still works, it likely is a speedometer. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/44653-speedo-not-working/#findComment-329524 Share on other sites More sharing options...
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