2008-2013 CTS Body Control Module 15837419 | Plug-and-Play Cloning Service

Restore Your Cadillac’s Electrical System with a Plug-and-Play Solution

If your 2008-2013 Cadillac CTS is plagued by bizarre electrical issues—like power windows with a mind of their own, flickering dashboard lights, or a security system that won’t cooperate—you’re likely dealing with a failing Body Control Module (BCM). As the central nervous system for your vehicle’s comfort and convenience features, a faulty BCM can turn your luxury ride into a source of daily frustration. I’ve seen it countless times in my 20+ years on the job: what seems like multiple, unrelated electrical problems almost always points back to this single component.

Forget expensive dealership visits, towing fees, and the headache of programming a new module from scratch. We offer a simple, reliable fix. This is a direct-replacement BCM that comes with our expert Cloning Service. Here’s how it works: you send us your original BCM, and we professionally transfer all of its critical data—including key programming, security information, and vehicle-specific options—to this replacement unit. The result? A true plug-and-play module that is ready for installation the moment it arrives at your door. We then ship your original module back to you along with the ready-to-install replacement.

Is Your Cadillac Showing These BCM Failure Signs?

A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution.

• ✔ Intermittent or non-functional power windows, locks, or mirrors.
• ✔ Erratic interior or exterior lighting (flickering, staying on, or not working at all).
• ✔ Horn sounding unexpectedly or not working when pressed.
• ✔ Security system faults or a vehicle that won’t start due to anti-theft issues.
• ✔ Dashboard warning lights illuminating for no reason (e.g., ABS, Airbag, Traction Control).
• ✔ Communication error codes, such as U0140, U0155, or other U-series codes.
• ✔ Wipers operating incorrectly or activating randomly.

Your Straightforward BCM Installation Guide

1. ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
2. ✔ Locate the BCM: In the 2008-2013 Cadillac CTS, the Body Control Module is typically located on the left-hand (driver’s side) of the dashboard, often behind the lower dash panel near the steering column.
3. ✔ Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. These usually pop off with a trim removal tool.
4. ✔ Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
5. ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors until they click into place.
6. ✔ Final Steps: Re-install the trim panels and reconnect the negative battery terminal. Start the vehicle and test all functions (windows, locks, lights, etc.).

Important Post-Installation Note: In some cases, additional relearn procedures may be required. For example, if the airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. A Brake Pedal Position relearn may also be necessary. Always refer to a service manual for your specific vehicle if you are unsure.

Verified Fitment for Your Vehicle

This BCM is a guaranteed fit for the 2008-2013 Cadillac CTS and is also compatible with a wide range of other GM vehicles. It directly replaces part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084. Please verify your part number before ordering.