how to fix the speedometer in a 1993 Pontiac grand am?

  • Thread starter Thread starter angellucky516
  • Start date Start date
A

angellucky516

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The speedometer is about 20 miles below how fast it is really going. So, if i am going 70 says 50. The tires are the right size and they have the right pressure. What could be wrong ad how would i go about fixing this?

Thanks in advance!!
 
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