Is Your GM Vehicle Experiencing Strange Electrical Problems?
If your car’s power windows, door locks, interior lights, or security system are acting erratically, a failing Body Control Module (BCM) is often the culprit. The BCM acts as the central hub for your vehicle’s body electronics, and when it malfunctions, it can cause a wide range of frustrating and seemingly unrelated issues. Don’t let a faulty module keep you guessing. This direct-fit replacement BCM, part number 15819552, is the reliable solution to restore your vehicle’s full functionality.
From the Diagnostic Bay
We had a 2009 Chevy Equinox come into the shop with a list of bizarre symptoms: the radio would randomly change stations, the dome light would flicker while driving, and the remote keyless entry only worked half the time. The owner had already replaced the battery and checked fuses with no luck. After connecting our diagnostic scanner, we saw multiple communication fault codes pointing to the BCM. Instead of a complex wiring issue, the fix was a straightforward replacement of the GM Body Control Module. Once we installed a VIN-programmed unit, all the electrical gremlins vanished instantly. It’s a perfect example of how this single component is vital to the vehicle’s comfort and convenience systems.
Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, mirrors, and door locks.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ The security system or alarm randomly activating or not setting.
- ✔ Dashboard warning lights (like the airbag or brake light) illuminating without a clear cause.
- ✔ Remote keyless entry failing to work consistently.
- ✔ Communication errors with other vehicle modules, leading to a no-start condition in some cases.
Why Choose Our Pre-Programmed GM Body Control Module?
This isn’t just a part; it’s a complete, ready-to-install solution. We take the hassle and high cost out of the repair process. When you order, simply provide us with your vehicle’s VIN. Our experts will then flash the module with the latest, most stable software updates directly from GM, ensuring it is perfectly matched to your vehicle’s specific options and configuration. This eliminates the need for an expensive trip to the dealership for programming after installation.
Installation and Post-Install Notes
While installation is straightforward for many DIYers, some post-installation procedures may be necessary depending on your specific model. Please be aware of the following:
- Airbag System Sync: If your airbag warning light is on 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 models 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 vehicle-specific guidance.
This module is a direct replacement for a wide array of part numbers, including: 10382479, 15093910, 15276271, 15299986, 15828601, 15837419, 15872388, 20815898, 22860591, 25892622, and many more. It fits a vast range of GM vehicles such as the Chevrolet Impala, Equinox, Tahoe, Traverse, Express Van; GMC Acadia, Yukon, Savana Van; Cadillac DTS, CTS, Escalade; Buick Lucerne, Enclave; and Saturn Outlook, among others. Please verify your part number or consult the fitment list to ensure compatibility.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine-related electronic functions, such as power windows, locks, lights, wipers, security system, and keyless entry.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and settings for your car’s specific features and options. This makes the installation process much simpler and avoids compatibility issues.
Is this part difficult to install?
The physical replacement is typically straightforward, involving unplugging the old module and plugging in the new one. However, as noted, some vehicles may require additional electronic relearn procedures with a professional scan tool for systems like the airbags or brakes.
What happens if the airbag light comes on after I install it?
This indicates the new BCM needs to be electronically synced with the vehicle’s airbag module (SDM). A qualified technician with a high-level diagnostic tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to send my old part back?
No, there is no core charge for this BCM. You can keep your original module.