2002 GMC Sonoma SERVICE LIGHT CAME ON

2002 GMC SONOMA
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DENNISD4OK
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Engine Performance problem
2002 GMC Sonoma 6 cyl Two Wheel Drive Automatic

Where do I place the connection to the truck to read the code for what is wrong and why it needs service?
Sep 28, 2009 at 4:54 PM
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CFREESE1977
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If you are talking about the connection to hook up a diagnostic computer it is located under the drivers side dashboard.
Oct 7, 2009 at 10:10 PM