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This is for anyone who owns a Blazer or knows about the computers in them, particularly the overhead display unit.I think I need to reset my overhead because it doesn't seem accurite.My gas light will come on and when I check the range,it says I have around 40 miles.Is this right?Do I need to reset it?If so,how do I go about doing so?Anything will help.It isn't posing a threat or anything but I do want to be able to honestly say that no matter how bad my vehicle looks,it operates accurately.Thank you guys.