Restore Full Electrical Function to Your GM Truck or SUV
Are you battling a storm of strange electrical problems in your Chevrolet Silverado, GMC Sierra, or Cadillac Escalade? Intermittent wipers, malfunctioning power windows, a dead HVAC system, or a persistent airbag light are all classic signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it fails, it can cause widespread and frustrating issues. This OEM-quality replacement BCM, part number 15284816, is the definitive solution to restore your vehicle’s functionality and peace of mind.
From the Diagnostic Bay
We had a 2009 Silverado 2500 roll into the shop that was a textbook case of BCM failure. The owner was frustrated because his power door locks had a mind of their own, the radio would sometimes not turn on, and the blower motor for his heat and AC was completely dead. He had already replaced the blower motor resistor with no luck. After a quick scan, we found multiple communication codes pointing to the BCM. Instead of a costly trip to the dealership for a new module and programming, we installed one of our VIN-programmed units. In under 10 minutes, every single one of his electrical gremlins was gone. It’s a simple fix that solves a complex-seeming problem.
Symptoms of a Failing GM Body Control Module
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ HVAC climate control functions are unresponsive, or the blower motor won’t turn on.
- ✔ An active airbag warning light, often with a DTC B1001 stored in the system.
- ✔ Exterior or interior lights (headlights, dome lights, dash lights) flickering or failing to work.
- ✔ Vehicle security system malfunctions, causing no-start conditions or false alarms.
- ✔ Seemingly unrelated diagnostic trouble codes across various systems.
Plug-and-Play Solution: The Power of VIN Programming
The biggest hurdle in replacing a modern vehicle module is the need for expensive, dealer-specific programming. We eliminate that step entirely. Before this GM Body Control Module ships, we program it with your vehicle’s unique Vehicle Identification Number (VIN). This process loads all the correct software and vehicle-specific calibrations, ensuring it communicates perfectly with the other modules in your truck or SUV right out of the box. This means no additional programming fees, no towing to the dealership, and a straightforward installation you can perform yourself.
Key Features & Benefits
- ✔ VIN Programmed for Your Vehicle: Arrives ready for installation with the latest GM software updates, ensuring immediate compatibility and performance.
- ✔ Restores Full Functionality: Corrects common electrical failures related to lights, locks, windows, HVAC, and security systems.
- ✔ Direct OEM-Quality Fit: Engineered to meet or exceed original equipment specifications for a perfect fit and reliable operation.
- ✔ No Core Charge: A hassle-free purchase. You are not required to return your old, faulty module.
- ✔ Broad Compatibility: Interchangeable with a wide range of part numbers, including 25844480, 25835966, 15943678, 20939137, 22860591, and more.
Installation & Post-Install Notes
The BCM is typically located under the driver’s side dashboard, near the steering column. Physical installation is simple and usually takes only a few minutes. However, please be aware of potential post-installation procedures:
- Airbag System Sync: If the airbag warning light remains on after installation (often with code B1001), a professional scan tool is required 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 relearn to ensure proper brake light and stability control function.
Always consult a factory service manual or a qualified technician if you are unsure about these procedures.
Frequently Asked Questions
What does a Body Control Module do on a GM truck?
The BCM is a computer that manages and controls most of your vehicle’s non-engine-related electronic functions. This includes power windows, door locks, the security system, interior and exterior lighting, wipers, and the HVAC system.
Is this BCM difficult to install?
The physical installation is very straightforward, typically involving a few electrical connectors and mounting bolts under the dashboard. Because we pre-program the module to your VIN, there is no need for dealer programming for the basic functions to work.
Will this module fix my airbag light?
If the airbag light is caused by a communication failure with a faulty BCM (like DTC B1001), this module will resolve the root cause. However, you may need to perform the ‘Setup SDM Primary Key’ procedure with a scan tool after installation to clear the light.
Do I need to send my old BCM back?
No. We do not require you to return your original part. There is no core charge associated with this purchase, making the process simpler for you.
What does ‘VIN Programmed’ mean for me?
It means the module arrives at your door fully configured for your specific vehicle’s features and options. This allows for a plug-and-play installation without the need for an expensive trip to the dealership for programming.