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Not really sure what code U1064 is and how to fix. I have owned my 04'trailblazer for 3 years now and outside of the general maintenance I haven't really had any problems with it. The insterment cluster was starting to go when I bought it and now the only thing that works is the speedometer. Would the insterment cluster have anything to do with the multiple codes showing up?

Vehicle: 2004 chevy trailblazer LS 4.2L
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