Are you dealing with baffling electrical issues in your GM vehicle? Flickering interior lights, power windows with a mind of their own, or a security system that randomly prevents your car from starting? These 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 turn your daily drive into a frustrating ordeal. This isn’t just an inconvenience; it can affect vehicle security and safety. We offer a reliable and straightforward solution: a replacement BCM with a professional cloning service.
Instead of paying for expensive dealership diagnostics and programming, our service simplifies the entire process. When you order, you’ll send us your original BCM. Our expert technicians will then transfer the critical vehicle-specific data—like key information and optional feature settings—from your old module to this replacement unit. This means when you receive it back along with your original, it’s ready for a plug-and-play installation. We handle the complex part, so you can get back on the road without the dealership headache. This is the smart, efficient fix for your 2010 STS Body Control Module and many other GM models.
A Technician’s Notebook
I remember a 2010 Cadillac STS that came into the shop with a classic “phantom drain” complaint. The owner had replaced the battery twice, but it would still be dead every few mornings. Standard parasitic draw tests were inconclusive at first. After letting the car sit for an hour to allow all modules to sleep, we found the BCM was intermittently waking up and activating various circuits, causing the drain. A failing internal relay inside the BCM was the culprit. Swapping in a BCM with cloned data solved the problem instantly, saving the customer from another incorrect diagnosis and the high cost of a new, un-programmed module from the dealer.
Is Your Vehicle Showing These Symptoms?
A failing BCM can cause a wide range of confusing issues. Over my 20+ years in the field, I’ve seen these problems hundreds of times. Look out for these common indicators:
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft system light stays on, preventing the engine from starting.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Dashboard warning lights illuminating for no reason.
- ✔ Communication failure codes (U-codes) stored in the system, such as U0140 (Lost Communication With Body Control Module).
- ✔ Wipers activating on their own or not turning off.
A Straightforward Guide to Installation
With our cloning service, installing your replacement 2010 STS Body Control Module is a job most DIYers can handle. For the 2010 Cadillac STS, the BCM is typically located in the center dash area.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait about 10 minutes to ensure all systems are powered down.
- Locate the BCM: Access the BCM. In the STS, this may require removing the glove box or lower dash panels for access. It’s a black plastic box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug all wiring harnesses from the old BCM. The connectors have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the Replacement: Mount the new, programmed BCM in the same location and securely reconnect all wiring harnesses. You should hear a click as they lock into place.
- Power Up: Reconnect the negative battery terminal. Your vehicle’s data is already on the module, so it should be ready to go.
- Final Checks: Start the vehicle and test all body functions: windows, locks, lights, wipers, etc. Note the post-installation procedures below, as some vehicles may require an additional step.
Important Post-Installation Information
While our cloning makes this a near plug-and-play repair, some GM security and safety systems require a handshake after a new module is introduced. Please be aware of the following:
- Airbag System Sync: If your airbag warning light is on after installation, a simple “Setup SDM Primary Key in BCM” procedure is needed. This requires a professional-grade scan tool and syncs the BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system function correctly.
Disclaimer: We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step. Your original module is always returned to you with the replacement.
Guaranteed Fitment for Your Vehicle
This BCM, part number 25847589, is a direct replacement for a wide array of GM vehicles and interchanges with numerous part numbers. Please verify your original part number or match your vehicle from the list below. This is the correct 2010 STS Body Control Module solution.
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
Compatible Models:
- ACADIA 07-12
- AVALANCHE 1500 10 (ID 25892622)
- CAPRICE 11-13
- CAPTIVA SPORT 12
- CTS 08-13
- DTS 06-11
- ENCLAVE 08-12
- EQUINOX 07-09
- ESCALADE / ESV / EXT 10 (ID 20815898 or 25892622)
- 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 (ID 20815898 or 25892622)
- TAHOE 10 (ID 20815898 or 25892622)
- TORRENT 07-09
- TRAVERSE 09-12
- VUE 08-10
- YUKON / YUKON XL 1500 10 (ID 20815898 or 25892622)
Frequently Asked Questions
What exactly is a ‘cloning service’?
What exactly is a ‘cloning service’?
Cloning is the process where we transfer the essential, vehicle-specific software and security data from your original BCM directly onto the replacement unit. This makes the new module an exact digital copy of the old one, which allows for a simple plug-and-play installation without needing further programming from a dealership.
Do I need to send you my original BCM?
Yes. For the cloning service to work, we need your original module to extract the data. After we program the replacement, we ship both your original module and the ready-to-install replacement back to you. We do not keep your old part.
Will my mileage and keys still work?
Absolutely. Because we are cloning your original data, the replacement BCM will retain your vehicle’s correct mileage information and programmed key data. There is no need to have keys reprogrammed.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM is failing, the memory chip holding the data is still readable. However, if the module is severely damaged (e.g., by fire or water), we can program the replacement using your car’s VIN. Please contact us first if you suspect your module is non-communicative.
Why did my original BCM fail?
BCM failures are common and can be caused by several factors, including voltage spikes from jump-starts, water intrusion from a leaky seal or windshield, or simply age and heat cycles causing internal components like relays and capacitors to fail over time.