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Q: my fuel gagefloats all over reading from empty to full when the fuel is low on 1999 GMC Savana 1500

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my fuel gage floats from empty to full when the fuel is low or after being parked on an incline
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Your fuel pump/fuel level sending unit MAY be bad! It's on your fuel pump in your gas tank. FYI - always keep at least a 1/4 tank of gas at all time, this unit goes crazy when the tank is always almost empty.
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