Restore Full Functionality to Your Cadillac with a VIN-Programmed BCM
If your 2008-2013 Cadillac CTS is plagued by bizarre electrical issues like flickering lights, malfunctioning power windows or locks, or a dashboard that lights up with random warnings, a failing Body Control Module (BCM) is often the culprit. As a technician with over two decades of experience, I’ve seen firsthand how a faulty BCM can turn a luxury vehicle into a source of constant frustration. This isn’t just an inconvenience; it can be a safety issue when critical systems like exterior lighting or security become unreliable.
This replacement Body Control Module is the definitive solution. We take the guesswork and extra expense out of the repair by programming the module to your vehicle’s specific VIN before it ships. This means it arrives at your door with the latest GM software updates, ready for installation. You get a reliable, plug-and-play fix that restores the complex systems your BCM governs, without the costly trip to the dealership for programming.
A Technician’s Notebook: The Intermittent Gremlin
I once had a 2011 CTS in my bay that drove its owner crazy. The radio would randomly shut off, the dome lights would stay on, and occasionally the car wouldn’t recognize the key fob. No codes were stored consistently. After checking grounds and wiring for hours, we swapped in a known-good BCM. Every single issue vanished. The original BCM’s internal logic was failing intermittently under specific temperature conditions—a classic sign of electronic fatigue. This pre-programmed module is the exact fix for these hard-to-diagnose scenarios.
Is Your CTS Exhibiting These Electrical Gremlins?
A failing BCM acts like a glitch in your vehicle’s central nervous system. Watch for these common indicators:
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors behaving unpredictably.
- ✔ The security system acting up, or the key fob not being recognized.
- ✔ False warnings on the dashboard information center (e.g., “Service Security System”).
- ✔ Unexplained battery drain when the vehicle is off.
- ✔ Communication error codes, such as U0140, stored in other modules.
A Straightforward Guide to Your BCM Installation
Replacing the BCM in your 2008-2013 CTS is a manageable job for a confident DIYer. The BCM is typically located on the left (driver’s) side of the dash.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On the CTS, you’ll generally find the BCM mounted to the left of the steering column, often behind the lower dash panel. You may need to remove this panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical connectors firmly, ensuring they click into place.
- Reconnect Power: Reattach the negative battery terminal.
- Perform Relearns: Start the vehicle. As noted in our technical information, you may need a professional scan tool to perform a “Setup SDM Primary Key in BCM” if the airbag light is on, or a “Brake Pedal Position Relearn” for certain models. Test all functions (lights, locks, windows) to confirm a successful repair.
Verified Fitment Across a Wide Range of GM Models
While this is the primary solution for the 2008-2013 Cadillac CTS (LH dash), this versatile module also directly replaces part number 25892622 and many others across the GM family. Please verify your part number or vehicle in the list below:
ACADIA 07-12 Body Control (BCM); (LH dash)
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
CAPRICE 11-13 Body Control (BCM)
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435, 20921436, or 22860591
DTS 06-11 Body Control (BCM); (RH center dash)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
EQUINOX 07-09 Body Control (BCM); (center dash)
ESCALADE / ESV / EXT 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
EXPRESS/SAVANA VANS 08-12 (Various engines and models, check original part number)
G8 08-09 Body Control (BCM); (center dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
IMPALA 06-13 Body Control (BCM); (LH dash)
LUCERNE 06-11 Body Control (BCM); (right side dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SRX 07-09 Body Control (BCM); LH dash
STS 10 Body Control (BCM); center dash
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TAHOE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TORRENT 07-09 Body Control (BCM); (center dash)
TRAVERSE 09-12 Body Control (BCM); (LH dash)
VUE 08-10 Body Control (BCM); (center dash)
YUKON / YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
This module is a direct replacement for 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.
Frequently Asked Questions
Frequently Asked Questions
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
What information do you need to program the module?
After you complete your purchase, we will require the 17-digit Vehicle Identification Number (VIN) from your Cadillac CTS to program the module correctly.
Is this a difficult part to install myself?
For someone with moderate mechanical skill, it is a very manageable repair. The main challenge is accessing the module’s location within the dash. Please see our installation guide above.
What happens if my airbag light comes on after installation?
This is a known possibility. It means the new BCM needs to be synced with the airbag system (SDM). A professional technician with a high-level scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Will this fix my specific problem?
This module corrects issues caused by a faulty BCM. While the symptoms we’ve listed are common, proper vehicle diagnosis is always recommended to ensure you’re replacing the correct part.
What does ‘VIN-programmed’ actually mean?
It means we load the module with the specific software and vehicle options that your car was built with at the factory. This ensures all features work as intended, from your specific lighting package to your security system, without any additional programming needed on your end.