2004 Cadillac DTS power window

If it goes up and down when the door is open, but makes no noise or operation when closed, I would check for broken wires in the door hinge pass through. With the door open, manipulate the harness and see if operation is affected.

The way the system operates is each door has a respective door module. Requests from the dedicated door switch, or the drivers door switch are sent to this module, which is in the door, and it processes the request and executes. These modules also have powers and grounds that I am speculating, is what you are losing. You should be able to grasp and tweak this conduit, to get to the inside you would have to remove the center pillar trim. In some cases there is a connector at the pass through, and there could be a connection issue like a loose terminal at that. It has to be at a location where there is some movement. Try entering diagnostics by pressing 'info' up, and 'on/off' on the instrument panel. After the segment check you should see PCM? On the info center. Use the info button to scroll up or down alphabetically, the module you are after should be RRDM(right rear door module), and press on/off to select. You will either see RRDM codes, or RRDM clear codes, info button will select, we want RRDM codes. See what codes are present and report. Try this with the door closed, and then try it again with the door open. When the window is inoperative, what we might expect to see is 'No RRDM data', and that could indicate a power/ground loss to the module, and support what I am describing. In either aspect, there should be a code(s) in the RRDM.

I did not get any information on a 2509 in any module. The jump start was only a coincidence if you left the key on for a significant amount of time, or you have a battery that is on the fritz. I would speculate that if you could get operation by playing with the conduit, you have a wire or terminal issue. I don't show(or have not found) if there is a connector at the pillar that feeds the door. If there was a connector there, I would check it first. It is a relatively new vehicle, with low miles, to suspect a broken wire, especially in a rear door. The wiring could have a manufacturing issue that shortened it's life, although.

Is this issue with the left front door, and is the radio staying on when the door is opened and key is off? The battery drain may be a seperate issue, or the retained accessory power is not disabling, indicated by the radio staying on, and the courtesy lights not turning on. All of this would be occurring on the same door with the window issue for me to suspect that they are related.

If it does not work with the left front, or dedicated window switch, then I would suspect wiring issues in or near the door. If you grab the harness where it passes from the door to the body and manipulate it, can you get any change in operation/inoperation. It is likely that your battery drain is unrelated, what fuses are you removing, and how did you come to the conclusion it was those fuses?

It sounds like, on your draw test, that you were just removing power from modules that were still awake. Was a door open while you were doing this? Ideally, to do an accurate draw test, the vehicle needs to be at rest for over twenty minutes with no doors or anything opened, keys out of the ignition. You can roll windows down, and trip door latches faking closed, for access. A light is a rather general means of testing drain. You know that a drain is large by the brightness, but you don't know when it is within acceptable limits. An ammeter or multimeter capable of measuring milliamps is the preferred method. Obtaining your measurement after power down, then you can remove and replace fuses one at a time, to see its effect on drain load.

You can enter diagnostics on the vehicle by pressing the 'Info' button up, and On/Off button together. A segment check will display, and then All? From there the info button scrolls modules or functions, and on/off executes functions. Run a check and record All Codes. You want to find out if there is a code in LRDM or if the module is even recognized. If there is no LRDM, or no LRDM data is displayed, you have a power, ground, or communications fault with that left rear door module. I would partially doubt it is with the module, I still suspect you have a wiring fault in the door. Does that lock function when the door locks are commanded, it comes from that module(LRDM), but the request for it to operate is from the data bus.

Have not seen an open ground cause battery to discharge, I suppose if it was keeping others awake that could be the case. At least it is repaired.