It could be a NUMBER of THINGS wrong. It means there is a problem with the emission system are Transmission. Need to have engine scaned with an OBDII engine scanner.
Advance auto parts will scan it for free. You will have to repair the problem before it will go off.
It requires an engine scanner to do that.
That REQUIRES an ENGINE SCANNER to do that.
There is an engine misfire, probably spark plugs issue.
I have a 2006 Chevrolet C4500 Duramax Diesel and I would like to know how to turn off or reset the check engine light on the truck.
Just disconnect the battery for a few minutes then reconnect.
With a scan tool.
I think it means you need to check your engine.
The check engine light comes on when the engine computer detects a malfunction and sets a trouble code.
that is not a question
Check engine light. Should be able to take it to AutoZone and they'll put their reader to it to tell you what's going on with your engine.
Bill Greene
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.