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Speedometer Reads Way Too High

I should have known it would read true cause it shifts perfectly. Sounds like you need a stepper motor. For the miles, zero the trip and your gps. Go for a ride and look at distance traveled on both. You could also use the mile markers on the highway

Sent from my ADR6350 using Tapatalk 2
 
How difficult of an install is a stepper motor? Dash have to be torn apart? I'll check the odometer against some highway markers, can't figure out how to get my GPS to read forward in tenths from zero.
 
The gauge cluster is easy to remove. Then open it up and the stepper motor is on the board it needs to be unsolder and replaced. I have done many on the next generation tricks. I think tenths would be too hard to tell. I think 5 miles would be good.

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The older trucks(02-) don't use stepper motors, they use a magnetic type of motor(not sure of the name, but it isn't a stepper like the 03+). They fail fairly rarely, but it does happen. And I believe in these trucks they just pop in, so no soldering.
 
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