I just bought this Cadillac Deville DTS, 2000. I have read on multiple posts to obtain the OBD codes using the following method:

- Press Off and Warmer buttons simultaineously

However, on my 2000 Deville's climate control, the OFF Button and Temperature Control Dial are one.

I am able to press the OFF Button and the Front Defrost. This results in the display reading "Snapshot Taken". However, I cannot figure out the next step to find the codes...

The reason that I am looking for the codes is due to:
#1 Traction Light going on and off for extended periods
#2 Warm air in the rear when running the A/C (I know of threads on this, but the code would help)
#3 Rear window that will not go down (you can hear it click when the button is pressed).

Thanks in advance for the help.

Look at post #1 on this page, it will do what you want;

http://www.cadillacforums.com/forums/cadillac-tech-tips/72494-how-pull-codes.html

Thanks for the link. I received a bunch of codes. Now I have to decipher them... Thanks again!

Decifer them here.
http://myweb.accessus.net/~090/dtcobd2.html