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Yea my cadillac light check engine whay
It means the engine computer has detected a malfunction and set a trouble code.
The check engine light on a 1999 Cadillac DeVille can be reset by disconnecting the battery for 30 seconds. The light will immediately come back on if the problem still exists.
Check engine is on BECAUSE the speedo is inop, assuming it was not on prior to speedo malfunction. Speedo is electronic. Could be numerous reasons ( no fuses are involved). Could be something simple like an electrical disconnect at transmission. Good luck
Hi, I have a 2002 Cadillac Seville SLS. I would like to know how to reset the stability system? my message light came on.
I have a 2001 Seville Cadillac that the service Engine soon light comes on after I happen to use certain fuels. It seems that ethanol type fuels are the worst. The light will go out after I put in a higher octane fuel. Not sure this is my complete problem but it always seems to go out in time. I keep wondering if there is some type of fuel additive I could add that would make the light go out faster.
Reading the codes requires a scan tool.
You have to reset it with a OBC scanner :-)
because your oxygen senser's need replaced after you do that your light will go off and you will also get better mpg about 5 to 10 differant
The check engine light would illuminate.
Disconnect the battery for 30 seconds