Are you battling bizarre and frustrating electrical problems in your GM vehicle? Intermittent power windows, flickering lights, a security system that acts on its own, or even a no-start condition can often be traced back to a single component: a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it malfunctions, it can create a cascade of confusing issues. This isn’t just an inconvenience; it can affect your vehicle’s safety and reliability.
This listing is for a direct replacement GM Body Control Module, part number 15819552, that arrives at your door pre-programmed to your vehicle’s specific VIN. We take the guesswork and expensive dealership trips out of the equation. By flashing the module with the latest GM software updates using your VIN, we ensure it communicates perfectly with your vehicle’s existing systems right out of the box. This is the straightforward, reliable solution to get your car, truck, or SUV functioning correctly again.
From the Diagnostic Bay
We had a 2011 Chevy Impala come into the shop with a list of complaints that seemed completely unrelated. The radio would randomly turn off, the driver’s side power window worked only when it wanted to, and the anti-theft light would stay on, sometimes preventing the car from starting. The owner had already replaced the battery and checked fuses with no luck. After connecting our diagnostic tool, we saw multiple communication errors pointing towards the BCM. Instead of a dozen small problems, it was one central failure. We installed a VIN-programmed BCM, and like magic, every single issue was resolved instantly. It’s a perfect example of how this one module can be the key to solving a host of electrical headaches.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ Vehicle security system faults or anti-theft light staying illuminated.
- ✔ Instrument cluster gauges behaving abnormally or not working at all.
- ✔ Intermittent no-start condition where the engine cranks but won’t fire up.
- ✔ Radio or climate control systems malfunctioning.
- ✔ False warning messages appearing on the driver information center.
Why Choose This Programmed GM Body Control Module?
Replacing your BCM doesn’t have to be a complicated ordeal. Our service is designed to provide a seamless repair experience. This module is meticulously tested and loaded with your vehicle’s unique configuration, making installation as simple as possible. It is a direct replacement for a wide range of GM vehicles, including models from Chevrolet, GMC, Cadillac, Buick, Saturn, and Pontiac. Simply provide us with your VIN, and we handle the complex programming, saving you time and money.
Installation and Post-Install Notes
While this module is designed for a straightforward installation, some vehicles may require additional calibration steps after the part is fitted. This is normal and ensures all related vehicle systems are properly synced. The two most common procedures are:
- Airbag System Sync: If your airbag warning light is on after installation, a technician will need to perform a ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and to satisfy the traction control system.
We always recommend consulting a factory service manual or a qualified technician for your specific vehicle. There is no core charge for this part, so you can keep your original module.
This module is a direct 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.
Frequently Asked Questions
What is a Body Control Module (BCM)?
The BCM is a computer in your vehicle responsible for managing and controlling body-related electronic accessories. This includes power windows, locks, lights, wipers, security systems, and more. It acts as a hub, communicating with various sensors and switches to operate these features.
How do I provide my VIN for programming?
After you complete your purchase, you can add your 17-digit VIN to the ‘notes’ section at checkout. If you miss it, don’t worry! We will contact you via email to request the VIN before we program and ship your module.
Is this BCM difficult to install?
The physical installation is typically straightforward, involving unplugging the old module and plugging in the new one. Because we pre-program it, you avoid the most complex part of the job. However, as noted, some vehicles may require simple relearn procedures with a scan tool for systems like the airbags or brakes.
Will this fix my specific electrical problem?
A faulty BCM is the cause of a wide range of electrical issues. If you are experiencing several of the symptoms listed, there is a very high probability that this module is the solution. For a single, isolated issue (like one window not working), it is best to check the specific switch and motor first.
Do I need to send my old BCM back?
No. There is no core charge or deposit required for this part. You can keep or dispose of your original module at your convenience.
What if my part number is not 15819552?
This module is a direct replacement for a long list of interchangeable GM part numbers. Please check the detailed list in the description to confirm that your original part number is included.