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With the little info you give it is hard to give you an answer. If I were you first I would check on recalls and tech bulletins here.

http://www-odi.nhtsa.dot.gov/cars/problems/recalls/recallsearch.cfm

Sounds like a problem in the dash cluster, wiring maybe? It could be something that has a tech buleten on so like I said check that first.

One thing I would like to know is the dash digital or analog, you don’t mention that?
 
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