Hello Everyone,

I'm still unclear whether this is the "Check Engine" light; regardless, I took it to see if there was a code associated with it.

It turns out its P0300-- "Cylinder Misfire Detected Random Cylinders"

A little confused here, as I passed smog 2 weeks ago (with no light on). I remember this light coming on before and going away by itself. The truck runs great @ 114,000 miles.

I bought it at 99,000. Maybe just replace plugs and wires and start from there? Any suggestions?

Thanks!