Question about 2003 Chevrolet Blazer
Disconect your battery cables and rub them together or step on the brake pedal for a couple of minutes to drain all residual voltage from the computers. Leave disconected for about 10-15 minutes reconect the battery and see if the speedo has normal operation, if not you need a new instrument cluster
Posted on Jul 21, 2010
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Posted on Jan 02, 2017
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