One or more of the power window regulators (one in each door) may fail causing the window to fall into the door and not roll up.Google+
Car Problem Reports
Cadillac DeVille DTS Power Window Regulators May Fail and Cause the Window to Fall Into Door
Cadillac DeVille DTS Problem
Average Mileage: 78,552 mi (3,000 mi - 154,000 mi)
Visitor, 2005 Cadillac DeVille DTS, 45,000 mi
Back passenger window dropped a few inches but corresponding power button wouldnt put window up. Then window just dropped into door. Took it for repair and was told that the little plastic piece was broken off by the wire being by it. Paid $300 for repair. One week later the driver's window dropped into door when I pushed power button to put window down. Had to drive 1 1/2 hours in 20 degree weather. After reading about this being a common problem, the repair man said the tracks are made cheaply, I feel this should be a recall item.I am going to contact Cadillac.
1991 Cadillac Deville - motor runs like it wants to catch, but the window won't slide up.
Visitor, 2005 Cadillac DeVille DTS, 40,000 mi
window regulators have been replaced 8 times. Two just two days ago. Windows regulators keep breaking in this car. Each repair is $400 or more. My warranty expired alreday.
4 windows Ihad to replace the window ragoulater it should've been a re call icost me more than 1200 dollar
Visitor, 2001 Cadillac DeVille DTS, 65,000 mi
3 window stop working. one window first. the next window 2 days later. the third window 3 weeks later.
Visitor, 2003 Cadillac DeVille DTS, 61,250 mi
Within 2 years all 4 window regulators broke down...this should be a recall item...try driving 100 miles in a snow storm with the window down, just to get home. Regulators "Made in Mexico".
Visitor, 2001 Cadillac DeVille DTS, 87,000 mi
window regulators all 4
Visitor, 2003 Cadillac DeVille DTS, 89,000 mi
Buy new Regulators they are cheaper than buying from dealer or auto store...
Visitor, 2003 Cadillac DeVille DTS, 128,000 mi
Rear passenger window then the from passenger window all with in 3 months apart. Very costly to fix, I just bought the window tool. Please wish me luck. Although my father was a master machanic in his time, I do the computer repair and NOT car repair, with the price of fixing I have to give it a try. I pray I don't make things worse. I agree this should be an recall. My warrenty out too. :-(
Visitor, 2003 Cadillac DeVille DTS, 59,000 mi
Window regulator failed i took it to the mechanic