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Title: Excellent Diagnostic Device
Review: I plugged this scanner into my Suburban to help me understand why the "check engine" light was on and in seconds it told me that the EGR valve circuit was giving a fault indication. I followed the procedure in the service manual and quickly determined it to be a bad EGR valve. Replacement took minutes. Entire job was over and done with in about 30 minutes counting the time it took to drive to the autoparts store and return. What a timesaver and in the longerun a hughe money saver too!!
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