Cadillac Repair: Battery Draining, control sensors, climate control

Question
QUESTION: Hello, the problem I am having with my 1994 Eldorado Touring Coupe is with the battery draining over night or after sitting for extended periods of time. It doesn't do it every night. I purchased a new battery in January when my car began this problem of not starting. Now, the new battery drains over night as well and I need to be boosted. I had the battery tested and I was told it was fine. I also took the car in to have it serviced and they told me that there was no draw!? My second question is about the 'service ride control' message appearing. I took it in about two years ago and had something replaced and now the message is appearing again. I've found an STS at a wrecker and I'm wondering if it would be a good idea to get the ride control sensors off of this parts car and change them myself... or is this message related to other problems? HELP! Thanks!
ANSWER: Check your computer for fault codes via:

1. Ignition ON. Engine OFF.

2. Simultaneously push and hold the OFF and WARMER buttons on your climate control panel and tell me every letter and number that appaer EXACTLY as if you were video taping the display.

3. When the display stops shut off the ignition key.

---------- FOLLOW-UP ----------

QUESTION: Hello again, thank you for your response. I ran the diagnostics, and I also read some of your other help advice to other people, and here's what came up P109 HISTORY P052 HISTORY 1052, from what I've read about what you told others, I believe this refers to the battery being disconnected and some other history being deleted correct? I did take the battery out when I got it tested. Under the RSS codes the following list appeared: S011 S013 S016 S018 S021 S023 S028 S044 S063... I am curious what each code means about the road sensing suspension specifically. I then followed the delete procedure to clear the codes and then only the following returned after a day of driving: S063. What does this and the other codes mean? Could this be related to my battery draining after sitting or is it unrelated to battery draw? Thanks again I appreciate your help.

Answer
P109 = battery power was lost to the PCM.
P052 = same as P109.
S063 = right rear hub sensor fault for your RIDE
      SUSPENSION SYSTEM.  

All the other codes are of no concern as they reset themselves.

the SERVICE RIDE CONTROL message came on due to the "S" codes.