Restore Your Cadillac’s Electrical System with a Plug-and-Play Solution
Are you dealing with baffling electrical issues in your Cadillac CTS? Flickering lights, malfunctioning power windows, a security system that acts on its own, or random warning messages on your dash are common signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it starts to go, it can cause a cascade of frustrating and unpredictable problems. This isn’t just an inconvenience; it can affect the safety and reliability of your car. Stop chasing electrical gremlins and get a definitive fix.
A Technician’s Notebook: The Ghost in the Machine
I once had a 2011 CTS in my bay that was driving its owner crazy. The interior lights would pulse faintly at night, the radio would occasionally shut off, and the key fob would only work intermittently. He had already replaced the battery and checked the main grounds. After hooking up my scan tool, I found a slew of ‘U’ codes (communication errors) between various modules. This is a classic BCM failure pattern. The module wasn’t completely dead, but its internal processors were failing, corrupting the data network. We installed a VIN-programmed BCM, and every single issue vanished instantly. It’s a repair I’ve done hundreds of times, and it highlights how critical a fully functional BCM is to modern vehicle operation.
Is Your Cadillac Showing These Symptoms?
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The security system or keyless entry system malfunctioning.
- ✔ False warning lights on the instrument cluster (e.g., “Service Theft System”).
- ✔ Communication Diagnostic Trouble Codes (DTCs) like U0140, U0155, or other U-codes.
- ✔ Unexplained battery drain when the vehicle is off.
The Smart, Simple Repair: VIN-Programmed and Ready to Install
Forget expensive dealership visits and the hassle of programming. We take the complexity out of the repair. When you order this 2008-2013 CTS Body Control Module, you provide us with your vehicle’s VIN. Our technicians will then program the module with the latest official GM software specific to your car’s exact configuration. This ensures all your vehicle’s options and systems communicate correctly right out of the box. It arrives at your door ready for a straightforward installation, saving you time and hundreds of dollars in programming fees.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: 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 trim panel near the steering column.
- ✔ Remove Trim: Carefully remove any plastic trim panels necessary to access the module. These usually pop off with a trim removal tool.
- ✔ Disconnect and Remove: 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 BCM: Mount your new, pre-programmed module in the same location and securely reconnect all electrical connectors.
- ✔ Final Steps: Reinstall the trim panels and reconnect the negative battery terminal. Start the vehicle and test all functions (lights, windows, locks, etc.).
Important Post-Installation Information
While this module is programmed for your VIN, some vehicle systems require a final handshake after installation. Be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control operation.
- No Core Charge: You are not required to send your old module back to us. This means no extra deposit and no return shipping to worry about.
Disclaimer: Vehicle systems vary. For detailed procedures specific to your exact model and year, always consult a factory service manual or a certified automotive technician.
Will This Fit My Vehicle?
This BCM is a direct replacement for part number 25847589 and a wide range of other GM part numbers. It is compatible with the following vehicles and options:
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
CTS 08-13 Body Control (BCM); LH dash (also fits 08 RH dash)
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 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25892622
EXPRESS 1500 VAN 08-12 Body Control (BCM); (center dash)
EXPRESS 2500 VAN 08-12 Body Control (BCM)
EXPRESS 3500 VAN 08-12 Body Control (BCM)
G8 08-09 Body Control (BCM); (center dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
IMPALA 06-12 Body Control (BCM); (LH dash)
IMPALA 13 Body Control (BCM); (LH dash), ID 22820315
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)
SAVANA 1500 VAN 08-12 Body Control (BCM); (center dash)
SAVANA 2500 VAN 08-12 Body Control (BCM)
SAVANA 3500 VAN 08-12 Body Control (BCM)
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 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
This module also replaces the following 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, 25892622, 25910474, 25934762, 25934763, 95151084.
Frequently Asked Questions
Frequently Asked Questions
Do I need to program this module?
No. We program the module to your car’s VIN before shipping. It arrives ready for installation, saving you a trip to the dealer.
Where is the BCM located on my 2008-2013 CTS?
The BCM is typically found behind the driver’s side lower dashboard trim, near the steering column.
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your order until we receive it.
What is a core charge?
A core charge is a deposit that is returned when you send back your old part. We do not have a core charge on this item, so you can keep your original module.
What if my airbag light comes on after installation?
This is a normal security measure. The BCM needs to be synced with the airbag module using a procedure called ‘Setup SDM Primary Key in BCM’. This requires a professional-grade scan tool and is typically a quick procedure for a qualified mechanic.
Will this fix my specific problem?
This BCM resolves failures within the module itself. While it fixes the vast majority of electrical issues listed, it’s essential to ensure your car’s wiring and other components are in good condition. A proper diagnosis is always recommended.