Question about 2001 Chevrolet Silverado 1500

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Service engine soon lite come on and poor fuel milage

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While Oldbetsy1965 may be right, there is no way to know unless you have the Silverado's OBD2 port scanned. Take it to a reputable mechanic or any auto parts store and ask them to scan the port.

Their scan tool will capture the trouble code(s) and then they can tell you what the problem is so you can set a course of action.

Posted on Jan 31, 2010

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If its got over 100.000 miles on it your o2 sensors are probably bad,converter might be stopping up

Posted on Jan 31, 2010

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