Night0wl

Hello everyone. I know this is an old post and I am sorry to bring it back up but I recently had success resolving this issue with a 2003 Cadillac CTS I bought. I didn't have this problem the first week I owned the CTS. Then all of a sudden it started. I will cut to the chase. The issue draining the battery ended up being the easy exit power seat and not the Radio. Apparently the seat moves back to the exit position that you set but never fully closes the relay. Instead of ripping into it and trying to pull fuses etc I thought, what have I done to the car since I bought it? I had removed the cellular antenna, replaced the spark plugs and coil packs, set the personalized settings in the radio. So I first looked at the antenna, made sure the wasn't any current or power going through the cable, Then I disconnected the negative cable on the battery and tested the current draw. It was drawing 2.4 Amps! I pulled the radio fuse (10A) from the drivers side back floor. The current draw went down slightly to 2.15 Amps. Then I thought about the personal settings and the easy exit seat. The fuse (also a 10A) was in the same block. Seat Mem or something like that. So I pulled it. Current draw went to 0.02 Amps!!!!) Put the cable back on the battery....So I went in the settings. Turned off the easy exit seat, put the fuses back in (Radio and Seat Mem) Started it up. Set my number 1 seat position. Left the exit button alone. Turned the car off. Got out. Closed the doors. Waited for lights to go out. Disconnected neg battery cable. Checked current..... 0.03 Amps!!!!! My battery has been draining just like everyone else's has over night. I will check in the morning but I am confident this was the problem based on the meter readings. Little info on the CTS. Got it for $1500! It has 165K on the clock. Nice Car! Plenty of options. Hope this helps others chasing this problem.