why would the engine light come on but the car runs great? on 2005 Cadillac Escalade

engine light just came on

by in Henderson, NV on March 18, 2010
2 answers
ANSWER by , March 18, 2010
Check this article in the Repairpal's Auto Repair Encyclopedia; http://repairpal.com/check-engine-light
ANSWER by , July 29, 2010
Fuel cap could be loose. Tighten cap and drive for a day or two to see if light goes off.