The service engine soon light comes on when the computer detects a malfunction and sets a code.
see related questions below for more info.
"How do you turn off the service engine light on a 2002 cadillac escalade?" When replacing oxygen sensors, will the service engine turn off?
service engine soon 1992 eldorado
The engine is overheating.
Possibly because you will need a service soon
If your Cadillac has the service engine soon light displayed, get it checked out as quickly as you can. It may be something as simple as a loose gas cap, but it can also be an engine problem or other serious situation that can damage your car if not corrected quickly.
Yea my cadillac light check engine whay
If you have fixed the problem it should reset itself. If not, the light will stay on.
service engion soon light is on
It means the engine computer has detected a malfunction and set a trouble code.
That is one of many possible causes.
service engine soon is your car telling you that you have reached a pre set service interval. Check your owners manual for a list of these maintenance items.
well it needs to be serviced...soon