Question about 2003 Pontiac Sunfire
Go to autozone and borrow a scanner, check to see what the problem is then replace the part , when you have it fixed go back and use the scanner to clear the code. if you dont fix the problem the light will just come right back on if you just clear it
Posted on Jul 11, 2010
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Posted on Jan 02, 2017
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The check engine light (yellow light) comes only when the computer control unit (called the PCM) senses a fault in the electronic controls of the engine and/or the emission system u will seldom feel the car engine run any different, there are about 200 possible faults that turn the light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen and Autozone parts stores do this testing for free.
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