Restore Your Cadillac’s Electrical System with a Plug-and-Play BCM
Are you battling frustrating electrical gremlins in your 2010 Cadillac STS? Flickering lights, malfunctioning power windows, or random warning chimes can point directly to a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of confusing and annoying issues. Instead of facing a costly trip to the dealership and waiting for programming, get a reliable, ready-to-install solution delivered to your door.
This BCM, part number 15837419, is the definitive fix for these problems. We take the guesswork and hassle out of the repair by professionally flashing the module with the latest GM software updates, specifically programmed to your vehicle’s VIN. This ensures seamless integration and restores all functions to factory specifications. Simply provide your VIN after purchase, and we’ll handle the complex programming before we ship. It’s the most efficient way to get your car back to 100%.
A Technician’s Notebook
A customer brought in their 2008 Cadillac DTS with a list of bizarre symptoms: the interior lights would pulse dimly, the radio would shut off randomly, and the security light stayed on, sometimes preventing the car from starting. A scan showed a dozen communication codes, all pointing back to the BCM. After confirming power and ground at the module were solid, we knew the internal logic had failed. We replaced it with one of our VIN-programmed units. The install took less than an hour, and upon reconnecting the battery, every single issue was resolved. The customer was thrilled to avoid a multi-day stay at the dealership and a much larger bill.
Common Signs of a Failing BCM
If you’re experiencing these issues, a faulty BCM is the likely culprit. This 2010 STS Body Control Module is designed to solve them.
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, locks, or mirrors working intermittently or not at all.
- ✔ The security system acting up, causing no-start conditions.
- ✔ The horn honking randomly or not working when pressed.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Multiple unrelated warning lights appearing on the dash.
A Straightforward Guide to Installation
Installing your new BCM is a manageable job for a confident DIYer. For the 2010 Cadillac STS, the BCM is typically located in the center dash area.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: Access the module, which may require removing some dash trim panels. In your STS, it’s in the center dash.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Note their orientation. Then, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in place and securely reconnect all electrical connectors.
- Reconnect Power: Reattach the negative battery terminal.
- Perform Final Procedures: Follow the critical post-installation steps below to ensure full functionality and clear any warning lights.
Critical Post-Installation Requirements
IMPORTANT: After installing your new BCM, a few final steps are required to sync the module with your vehicle’s other systems. This is standard procedure for this repair.
- Airbag System Reset: The ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-level scan tool. This re-establishes communication with the airbag system and will turn off the airbag warning light.
- Brake Pedal Position Sensor Relearn: Some vehicles require the Brake Pedal Position (BPP) sensor to be recalibrated. This ensures the brake lights and stability control systems function correctly.
- Consult a Professional if Needed: While the physical installation is simple, these final configuration steps require specific diagnostic tools. If you don’t have access to one, a local trusted mechanic can perform these procedures quickly.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of GM vehicles and part numbers. Please verify your vehicle and original part number from the list below. This unit is a confirmed fit for the 2010 STS Body Control Module and is interchangeable with 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, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.
Fits models such as: Acadia (07-12), Avalanche (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 (10), Tahoe (10), Torrent (07-09), Traverse (09-12), Vue (08-10), Yukon/XL (10).
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming before shipping. Just provide us with your vehicle’s 17-digit VIN during checkout, and the module will arrive ready for installation and final relearn procedures.
Is this a brand new part?
This is a high-quality, tested part that has been inspected and prepared to meet or exceed original factory standards. It is flashed with the latest GM software for optimal performance.
What tools are needed for the final airbag and brake relearn procedures?
These procedures require a professional-grade bidirectional scan tool, such as a GM Tech 2, MDI, or a high-end Snap-on or Autel scanner. Most local repair shops have this equipment.
Will this fix my ‘Service Security System’ message?
In many cases, yes. The BCM is a core component of the vehicle’s anti-theft and security system. A failing BCM is a very common cause of this warning message and related no-start issues.
How do I find my original BCM part number to verify fitment?
The part number is printed on a sticker directly on your original BCM. While this module fits a wide range of part numbers, checking yours is a good way to confirm compatibility before ordering.