Just bought a 2003 STS and in the first week this suspension alarm came on after hitting a pot hole.Do I have to go to the dealer? My 97 STS is easy to get the code out my self but the 2003? I have an OBD 2 reader and this showed no codes.

 

when pulling codes on the 98-04 Seville's you hold the "on/off" button and the upper part of the "info" button on the right of the speedometer cluster untill all the lights reset and it shows "ALL CODES" on the DIC.

 

Thanks a lot, I now can get in. I have the Cadillac shop manuals for my 97 STS, are the code numbers the same for the 03?

 

the codes are pretty much the same if you have a code and cant figure it out i can double check. good luck