Restore Your Cadillac’s Electrical System with a Plug-and-Play Solution
Are you dealing with baffling electrical problems in your Cadillac CTS? Intermittent power windows, door locks that don’t respond, a security light that won’t turn off, or strange instrument cluster behavior are all classic signs of a failing Body Control Module (BCM). As the central computer for your car’s comfort and security features, a faulty BCM can make your daily drive incredibly frustrating. In my 20+ years of diagnostics, I’ve seen how a bad BCM can mimic a dozen other problems, leading to wasted time and money on incorrect repairs.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional cloning service that transfers the essential data from your original BCM to this replacement unit. This means your vehicle’s specific key information, security settings, and option configurations are perfectly preserved. The result is a truly plug-and-play module that eliminates the need for an expensive trip to the dealership for programming. You get your car back to normal without the extra cost and scheduling headaches.
A Technician’s Notebook
I remember a 2011 Cadillac CTS that came into the shop with a list of seemingly unrelated issues. The customer reported the radio would randomly shut off, the driver’s side power window worked only when it wanted to, and the key fob’s range was practically zero. No check engine light, but several communication (U-code) errors were stored. After checking the main power and ground connections, we focused on the BCM. By monitoring its data stream, we saw erratic outputs corresponding to the exact moment the faults occurred. We replaced it with a cloned unit, and it was like flipping a switch—every single ghost in the machine vanished. This is a prime example of how a single 2008-2013 CTS Body Control Module can be the root cause of widespread electrical chaos.
Common Signs of a Failing BCM
If you’re experiencing any of these issues, a failing BCM is the likely culprit. A proper diagnosis is always recommended, but these symptoms are strong indicators:
- ✔ Erratic or non-functional power windows, door locks, and interior lights.
- ✔ The security or anti-theft light stays on, potentially causing a no-start condition.
- ✔ Key fobs stop working or have a severely reduced range.
- ✔ Horn honks unexpectedly or doesn’t work at all.
- ✔ Stored diagnostic trouble codes (DTCs), especially communication codes like U0140, U0155, or BCM-specific codes.
- ✔ Wipers or other accessories activating on their own.
Your Straightforward Installation Guide
Installing your replacement 2008-2013 CTS Body Control Module is a manageable job for a confident DIYer. The BCM is typically located on the left (driver’s) side of the dash. Always consult a service manual for the exact location on your specific vehicle.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system capacitors to discharge.
- Locate the BCM: On the 2008-2013 CTS, you’ll generally find the BCM behind the lower dash panel on the driver’s side. You may need to remove a trim panel for access.
- Disconnect the Connectors: Carefully release the locking tabs on each electrical connector and pull them straight out from the module. Never pull on the wires themselves.
- Remove the Old Module: Unbolt or unclip the original BCM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Mount the replacement BCM in the same location, ensuring it’s secure. Reconnect all electrical connectors, making sure they click firmly into place.
- Reconnect the Battery: Reattach the negative battery terminal. Your installation is now complete.
Important Post-Installation Information
Thanks to our cloning service, no initial programming is needed. However, some GM vehicles may require a simple relearn procedure for specific systems to sync with the ‘new’ BCM. These often can be done with a high-end scan tool.
- Airbag System Sync: If your airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary to sync the airbag system. This ensures the safety system is fully operational.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure proper brake light operation and to keep the traction control system happy.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician for procedures specific to your vehicle.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15819552 and other interchangeable part numbers listed below. While it fits a wide range of GM vehicles, this listing and service are specifically centered on providing a reliable fix for the 2008-2013 CTS Body Control Module.
Interchangeable 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
Fits Select Models Including:
AVALANCHE 1500 10
CAPRICE 11-13
CAPTIVA SPORT 12
CTS 08-13
DTS 06-11
ENCLAVE 08-12
EQUINOX 07-09
ESCALADE 10
ESCALADE ESV 10
ESCALADE EXT 10
EXPRESS VANS 08-12
G8 08-09
HUMMER H2 08-09
IMPALA 06-13
LUCERNE 06-11
MONTE CARLO 06-07
OUTLOOK 07-10
SAVANA VANS 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10
TAHOE 10
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON 10
YUKON XL 1500 10
Frequently Asked Questions
How does the cloning service work?
How does the cloning service work?
After you place your order, you’ll ship your original BCM to us. We use specialized equipment to extract the unique data from your module and transfer it directly onto the replacement unit. This ensures all your vehicle’s settings, including key data and mileage, are retained. We then ship both your original module and the ready-to-install replacement back to you.
Do I need to provide my VIN?
No. Because this is a cloning service, we only need your original module. The VIN-specific data is contained within the module itself, which we transfer directly. This is a more comprehensive process than simple VIN programming.
Is this a plug-and-play part?
Yes, for the vast majority of vehicles. Because we clone your original data, the vehicle will recognize the replacement module as its own, eliminating the need for programming. In some cases, minor relearn procedures for systems like the airbag or brake pedal sensor may be needed, as noted in the description.
What is your core policy?
We require your original module to perform the cloning service. However, we do not keep it. Your original (core) module will always be returned to you along with the fully prepared replacement unit.