Restore Your Cadillac’s Electrical System with a Plug-and-Play Solution
Is your 2010 Cadillac STS suffering from bizarre electrical issues? Flickering lights, malfunctioning power windows or locks, or a security system that has a mind of its own? These are classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s comfort and convenience features, a faulty BCM can turn your luxury sedan into a source of daily frustration. In my 20+ years as a technician, I’ve seen how a bad BCM can mimic a dozen other problems, leading to expensive and incorrect diagnostic paths. This isn’t just a part; it’s the solution to restore order and reliability to your vehicle’s electronics.
We take the guesswork and hassle out of the repair. Unlike a generic part from a salvage yard or parts store, this BCM arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load the latest, most stable software from GM, ensuring all systems communicate correctly from the moment you plug it in. This critical step saves you from a mandatory, and often costly, trip to the dealership for programming. You get a reliable, updated component ready for installation right out of the box.
Case Study: A Tricky Diagnosis
A customer brought in a 2010 Cadillac STS with a perplexing issue: the interior lights would stay on, draining the battery overnight, and the remote keyless entry worked only intermittently. They had already replaced the battery and checked all the door switches. After connecting my scan tool, I found several ‘Loss of Communication’ codes (U-codes) pointing to the BCM. Instead of a complex wiring repair, the root cause was internal failure within the original module. We installed one of our VIN-programmed BCMs, and in under an hour, every function was restored to factory-perfect operation. It’s a prime example of how this single component can resolve a host of frustrating electrical gremlins.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty BCM is the likely culprit. Replacing your failing 2010 STS Body Control Module can resolve these problems:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that won’t turn on or off.
- ✔ The security system or alarm randomly activating or failing to set.
- ✔ Intermittent starting problems or a no-start condition.
- ✔ Warning lights on the dashboard, such as the airbag or security light.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication errors, like U0140, U0155, or B1001.
A Straightforward Guide to Installation
Installing your new BCM is a manageable task for a DIY enthusiast. 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 a few minutes to ensure all systems are powered down.
- Access the Module: Carefully remove the necessary dash panels to gain access to the BCM. Its location is often behind the glove box or near the center console.
- 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 old module and remove it.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location. Securely reconnect all electrical connectors, ensuring they click into place.
- Final Steps: Reassemble the dash panels and reconnect the negative battery terminal. Start the vehicle and test all body functions (lights, locks, windows, etc.).
Important Post-Installation Notes
While this module is programmed for your VIN, some vehicle systems may require a relearn or synchronization procedure after installation:
- 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’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure proper brake light and traction control operation.
Verified Vehicle Compatibility
This Body Control Module is a direct replacement for part number 15299986 and is compatible with a wide range of GM vehicles. Please verify your part number or contact us with your VIN to confirm fitment. This module is guaranteed to fit the following:
Chevrolet: Equinox (2007-2009), Impala (2006-2013), Monte Carlo (2006-2007), Tahoe (2010 – check ID), Traverse (2009-2012), Suburban 1500 (2010 – check ID), Avalanche 1500 (2010 – check ID), Captiva Sport (2012 – check ID), Caprice (2011-2013), Express Vans (2008-2012)
GMC: Acadia (2007-2012), Yukon / Yukon XL 1500 (2010 – check ID), Savana Vans (2008-2012)
Buick: Lucerne (2006-2011), Enclave (2008-2012)
Pontiac: Torrent (2007-2009), G8 (2008-2009)
Saturn: Outlook (2007-2010), Vue (2008-2010)
Hummer: H2 (2008-2009)
Replaces Multiple Part Numbers
This module is an authorized replacement for 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.
Do I need to do anything after I purchase?
Do I need to do anything after I purchase?
Yes. After you place your order, you must provide us with your vehicle’s 17-digit VIN. We need this to program the module with the correct software and vehicle-specific information before we ship it to you.
Is this a difficult part to install?
For someone with basic mechanical skills, it is a manageable job. The main challenge is typically accessing the module’s location within the dash. Since our module comes pre-programmed, you avoid the most difficult part of the process—the software calibration.
What if my original part number is not 15299986?
This BCM is a direct replacement for a long list of GM part numbers. Please check the ‘Replaces Multiple Part Numbers’ section above. If your number is on that list, this module will work for your vehicle.
Is there a core charge?
No. We do not require you to send your old BCM back to us. There is no core charge or deposit associated with this purchase, saving you time and return shipping costs.
Will this fix my ‘Service Airbag’ light?
If the airbag light is caused by a faulty BCM, this part will resolve the issue. However, after installation, the light may stay on until the ‘Setup SDM Primary Key in BCM’ procedure is performed with a compatible professional scan tool to sync the systems.