Check Engine Lite is on on 2002 GMC Sonoma

What are the possible problems associated with the illumination of the Check Engine Lite.

by in South Bend, IN on November 27, 2009
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3 answers 1 comment
ANSWER by , April 12, 2010
02 sensor front of catalytic converter or rear of converter.
ANSWER by , November 27, 2009
Go to a Advance or Autozone parts house and ask them to code out the computer. Ask for the code numbers. e-mail me at swaths3644@mypacks.net
COMMENT by , November 27, 2009
Can't help without a TROUBLE CODE
ANSWER by , November 27, 2009
Check out these articles in the RepairPal Encyclopedia; http://repairpal.com/check-engine-light http://repairpal.com/check-engine-light-diagnostic-assistant