Are you battling bizarre electrical issues in your Cadillac CTS? Flickering lights, malfunctioning power windows, or a security system that has a mind of its own are common signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s comfort and convenience features. When it fails, it can cause a cascade of frustrating and seemingly unrelated problems. This replacement BCM is the definitive solution to restore your car’s functionality and your peace of mind.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We pre-program the module to your vehicle’s specific VIN, loading it with the latest software updates from GM. This critical step ensures seamless integration with your car’s existing systems, eliminating the need for an expensive trip to the dealership for programming. Simply provide your VIN after purchase, and we’ll handle the rest, shipping you a part that’s ready for installation right out of the box.
We had a 2011 CTS in the shop that was driving its owner crazy. The radio would turn on and off, the interior lights would flicker while driving, and occasionally the car wouldn’t detect the key fob. The battery and alternator checked out fine. After chasing wiring diagrams, we isolated the issue to the BCM. It was sending erratic signals across the CAN bus network, creating electronic chaos. Installing a VIN-programmed BCM like this one solved every single issue in one go, saving the customer hours of diagnostic labor and the headache of a dealer visit.
Symptoms of a Failing GM Body Control Module
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting (headlights, taillights, dome lights).
- ✔ Security system faults or the engine failing to start due to anti-theft issues.
- ✔ Unexplained parasitic battery drain that kills your battery overnight.
- ✔ Dashboard warning lights for various systems (ABS, Airbag, Traction Control) illuminating without a clear cause.
- ✔ Malfunctioning radio, climate controls, or instrument cluster gauges.
Plug-and-Play Solution for Your 2008-2013 CTS Body Control Module
Replacing your BCM shouldn’t be a complicated ordeal. Because we program this module to your VIN before shipping, the complex part of the job is already done. While the installation is straightforward for many, please be aware of potential post-installation procedures. Depending on your vehicle’s specific configuration, a ‘Setup SDM Primary Key in BCM’ procedure may be needed if the airbag light appears, or a ‘Brake Pedal Position Relearn’ may be required. These procedures typically require a professional-grade diagnostic tool. There is no core charge for this part, so you can keep your old module.
This module, identified by part number 15872388, is a direct replacement for a wide array of original part numbers, ensuring broad compatibility across many GM models including the Cadillac DTS, Chevy Impala, GMC Acadia, and more. Please verify your part number or consult the fitment list to ensure this is the correct component for your vehicle.
Frequently Asked Questions
Do I need to program this BCM?
No. We pre-program the module to your vehicle’s VIN before it ships. It arrives ready for installation, saving you a trip to the dealership. Please provide your VIN at checkout or via message after your purchase.
Where is the BCM located on my 2008-2013 Cadillac CTS?
On 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.
What if my airbag light is on after I install the new BCM?
If the airbag light illuminates after installation, the new BCM needs to be synced with the airbag system’s SDM. This requires a ‘Setup SDM Primary Key in BCM’ procedure using a professional diagnostic scan tool.
Will this fix a parasitic battery drain?
A faulty BCM is a very common cause of parasitic battery drain because it may fail to let other modules go to ‘sleep’ after the car is turned off. While not a guarantee for every case, replacing a bad BCM often resolves these mysterious battery drain issues.
Is there a core charge?
No, there is no core charge. You are not required to send your old BCM back to us.