Question about 1997 Pontiac Sunfire

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Just bought a used Sunfire. Check engine light

Just bought a used 1997 Pontiac Sunfire. Check engine light came on the second day of driving it. Hooked up scan tool to see what computer says and scanner isn't recognizing it. Friend said plug on the car that the scanner plugs into may be bad. Can I replace that plug?

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  • Pontiac Master
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I have never had to replace an ALDL plug in 28 years. This includes 4 years working for a GM dealership.

Check your manual for a fuse location for the diagnostic link. Also try the generic vehicle data stream on the scanner. Is this a good scanner like a snap-on or genesis? If it a cheap one, suspect that.

Try going to an Advance or Auto=zone store and have them try to scan it.

Hope this helps

Posted on Oct 15, 2009

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Posted on Jan 02, 2017

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