Restore Your Vehicle’s Electrical Systems with a Hassle-Free Solution
Are you dealing with baffling electrical problems in your GM vehicle? Intermittent power windows, locks that have a mind of their own, strange warning lights, or a security system that prevents your car from starting are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s comfort and convenience features, a faulty BCM can make driving a frustrating experience. This isn’t just an inconvenience; it can affect vehicle security and safety systems. For owners of vehicles like the 2010 STS, a failing Body Control Module can be a source of constant headaches.
We offer a straightforward and reliable fix. This listing is for a replacement BCM featuring our professional cloning service. Instead of paying for expensive dealership programming and diagnostics, you simply send us your original module. We extract the unique, vehicle-specific data—including your VIN, key information, and factory options—and transfer it directly to this replacement unit. The result? A module that is truly plug-and-play, arriving at your door ready for installation with no additional programming required.
Case Study: A Tricky Diagnosis
A customer brought in a 2010 Cadillac DTS with a complaint that was stumping other shops. The power door locks would work one minute and not the next, and the interior dome light would flicker randomly while driving. They had already replaced two door lock actuators with no success. After hooking up my pro-level scan tool, I noticed intermittent communication loss codes with the BCM (U0140). Instead of just throwing parts at it, we tested the BCM’s power and ground circuits, which were solid. This pointed directly to an internal failure in the module itself. By providing a cloned BCM, we solved all the issues in one go, saving the customer hundreds in further misdiagnosis and dealer programming fees. It’s a perfect example of how a central component can create multiple, seemingly unrelated symptoms.
Common Signs Your GM BCM is Failing
If you’re experiencing any of the following, a faulty BCM is the likely culprit. In my 20+ years of experience, these are the most frequent complaints that trace back to this module.
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights staying on or not turning on.
- ✔ The security system or keyless entry failing to work correctly.
- ✔ Horn activating unexpectedly or not working when pressed.
- ✔ False warning messages on the instrument cluster (e.g., ‘Service Theft System’).
- ✔ Communication error codes, such as U0140, U0155, or other U-series codes, indicating a network problem.
- ✔ Complete no-start condition where the starter doesn’t engage.
A Straightforward Guide to Installation
This module is designed for a direct-fit replacement. For the DIY enthusiast, the process is manageable with basic tools. For a 2010 STS Body Control Module, the unit is typically located in the center dash area.
- 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 Cadillac STS, you’ll generally find the BCM in the center dash. On other models, it could be under the steering column or behind a kick panel. A quick search for your specific model will confirm its location.
- Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Power Up: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting) and allow the vehicle’s systems to initialize for a minute before starting the engine.
- Perform Relearns (If Needed): Check for any warning lights. As noted below, an airbag or brake system relearn may be necessary in some cases.
Important Post-Installation Information
Our cloning service handles all the critical programming. However, on some GM platforms, certain safety systems may require a ‘handshake’ with the new BCM after installation. These are not programming steps but rather simple relearn procedures that may be required:
- Airbag System Sync: If your airbag light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-level scan tool. This is only required if the light appears.
- Brake Pedal Position Relearn: On certain models, the brake pedal position sensor may need to be recalibrated to ensure correct brake light and traction control operation.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Guaranteed Fitment for Your Vehicle
This module is a direct replacement for a wide range of GM vehicles and part numbers. Please verify that your original part number is on this list or that your vehicle is listed below.
Compatible 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 Models Including: Acadia (07-12), Avalanche 1500 (10), Caprice (11-13), Captiva Sport (12), CTS (08-13), DTS (06-11), Enclave (08-12), Equinox (07-09), Escalade/ESV/EXT (10), Express/Savana Vans (08-12), G8 (08-09), Hummer H2 (08-09), Impala (06-13), Lucerne (06-11), Monte Carlo (06-07), Outlook (07-10), SRX (07-09), STS (10), Suburban 1500 (10), Tahoe (10), Torrent (07-09), Traverse (09-12), Vue (08-10), Yukon/Yukon XL 1500 (10). (Note: Specific options or IDs may apply; please check the original description for details.)
Frequently Asked Questions
Frequently Asked Questions
What exactly is a BCM cloning service?
Our cloning service is a process where we transfer all the essential data—like your vehicle’s VIN, mileage, and key programming—from your original, faulty BCM to this replacement unit. This makes the new module a perfect electronic match for your car, eliminating the need for dealer programming.
Do I have to send you my old BCM?
Yes, for the cloning service to work, we require your original module. This is how we ensure the replacement is 100% plug-and-play for your specific vehicle. We return your original module with the newly programmed one.
Will this fix my car’s no-start problem?
If the no-start issue is caused by the BCM failing to recognize your key or communicate with the engine computer (a common failure), then yes, this service will resolve it. However, a no-start can have many causes, so proper diagnosis is always recommended.
Is any programming needed after I install it?
No, the module arrives fully programmed and ready for installation. In some cases, as mentioned in our guide, simple ‘relearn’ procedures for the airbag or brake systems might be necessary, but this does not require a dealer programming tool.
Where is the BCM located on a 2010 Cadillac STS?
On the 2010 Cadillac STS, the Body Control Module is typically located behind the instrument panel in the center dash area. You may need to remove some trim panels to access it.
What is your policy on the original ‘core’ module?
We don’t keep your old part. The customer’s original module is always returned along with the programmed replacement unit. There is no core charge because your original part is required for the service.