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Discussion Starter #1
so my brother has an 03 duramax and the speedometer idles at about 65mph and when you are going like 55 it says your going 120....? and also the driver seat is electric and when you push foward it goes back and visa versa...also only moves like 2 inches both ways?
 

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Don't know about the seat, but the speedo is probably the stepper motor, do a search, there is lots of info on it, it is a 2003 issue, but also on other vehicles as well.

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Discussion Starter #3
oh alright, thanks. He took it into the dealer today, he has 1500 miles left on his warranty:p:
 
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