Does anyone know how to pull diagnostic codes on a 2003 CTS? I found some info in the FAQ section for 2000's models that instructed me to:

1. Turn ignition "ON." Engine can be either OFF or RUNNING.
2. Depress the "ON/OFF" button and the "UP ARROW" end of the info button on the driver information center simultaneously for a few seconds.

I am not sure what the "ON/OFF" button refers to. I tried the button for the radio and for the heater, but neither worked. There is no on/off button for the driver's information center.

 

CTS requires scanner to get codes.

 

I think some of us, at least me, assume that most Cadillacs have on board codes one can pull.
generally, from 1987 to 2009, which cars have the on board codes?


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That sucks. Cadillac doesn't make anything easy....