Are you battling frustrating electrical gremlins in your GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts on its own, or a persistent battery drain can all point 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 wide range of confusing and unpredictable issues. This replacement Body Control Module, part number 15819552, is the definitive solution to restore your vehicle’s functionality and your peace of mind.
We take the guesswork and hassle out of the repair process. Unlike a standard replacement part that requires a trip to the dealership for expensive programming, this module arrives at your door pre-programmed with the latest GM software updates, specifically matched to your vehicle’s VIN. This ensures a seamless installation process, getting you back on the road faster and saving you money.
From the Diagnostic Bay
We had a 2008 Chevy Impala come in with a classic case of a haunted car. The owner reported the dome lights would flicker, the radio would sometimes not turn on, and the anti-theft light would flash randomly, preventing the car from starting. After checking the battery and alternator, our scan tool showed multiple communication loss codes with various modules. All signs pointed to the BCM. Instead of a costly dealer visit, the customer opted for our pre-programmed BCM. The swap took less than an hour, and once installed, all the electrical gremlins vanished. It’s a perfect example of how a failing BCM can mimic a dozen other problems.
Why Choose Our Programmed GM Body Control Module?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. By providing your Vehicle Identification Number (VIN) during checkout, our technicians will flash the module to your vehicle’s exact specifications. This critical step ensures that all the original features and options your car came with will function correctly right out of the box. There is no core charge, so you can keep your original module.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights (headlights, taillights, dome lights).
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Security system faults or the vehicle failing to start due to an anti-theft issue.
- ✔ Warning lights on the dashboard, such as the airbag or ABS light, without a clear cause.
- ✔ Complete loss of communication with the module, often indicated by U-codes on a diagnostic scan.
- ✔ Unexplained battery drain that kills your battery overnight.
Installation and Post-Install Considerations
Installation is straightforward for those with moderate mechanical skill. The BCM is typically located under the dash on the driver’s or passenger’s side. After swapping the module, most functions will be restored immediately. However, depending on your specific model, a couple of additional steps might be necessary:
- 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: Some vehicles may require a brake pedal position sensor recalibration to ensure proper brake light and traction control operation.
Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
Guaranteed Fitment for Multiple Part Numbers
This module is a direct replacement for a wide range of original part numbers, ensuring broad compatibility. It will fit vehicles that originally came with any of 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
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle that controls and monitors many of the electronic accessories not related to the engine, such as power windows, locks, lights, wipers, and the security system.
Why do you need my VIN?
Your vehicle’s VIN allows us to program the BCM with the correct software and settings for your specific model and options. This ensures all features work correctly and makes the installation process much simpler, avoiding a trip to the dealer.
Is this part difficult to install?
For someone with basic automotive repair experience, the physical replacement is generally not difficult. It involves locating the old module (usually under the dashboard), disconnecting the battery, swapping the electrical connectors, and mounting the new one. The key benefit of our product is that the complex programming is already done for you.
Will this fix my specific electrical problem?
A failing BCM is a very common cause for the symptoms listed above. While this Programmed GM Body Control Module is the correct solution for a faulty BCM, you should always perform proper diagnostics to confirm the BCM is the root cause of your issue before ordering.
What if my airbag light comes on after installation?
This is a known possibility on some GM models. The new BCM needs to be electronically ‘introduced’ to the airbag system (SDM). This procedure, called ‘Setup SDM Primary Key in BCM’, requires a professional-grade scan tool but is a quick process for any competent repair shop.