Are you battling frustrating electrical gremlins in your GM truck or van? Issues like flickering lights, malfunctioning power windows and locks, or a security system that acts up on its own are often caused by 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 create a host of confusing and intermittent problems. This replacement BCM, part number 15747545, is the definitive solution to restore your vehicle’s functionality and peace of mind.
This isn’t just a generic part off the shelf. We program each module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures complete compatibility with your vehicle’s options and loads the latest GM software updates, often correcting factory flaws. The result is a simple, direct-fit installation process without the need for an expensive trip to the dealership for programming.
Common Symptoms of a Failing GM BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The security system or anti-theft light staying on, preventing the vehicle from starting.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ The radio or climate control system behaving erratically.
- ✔ “Service Electrical System” or similar warnings on the dash.
Installation and Post-Install Procedures for your 2003-2007 GM BCM
Installation is straightforward for those with basic mechanical skills. The BCM is typically located under the steering column in trucks or behind the center dash in vans. Once the new module is connected, your vehicle should start and run. However, depending on your specific model, a couple of simple relearn procedures may be necessary.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a technician with a professional scan tool will need 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 brake lights and traction control function correctly.
This module is a direct replacement for the following part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, 10367689. Order today, provide your VIN, and get a reliable, plug-and-play solution delivered to your door. Best of all, there is no core charge, so you can keep your original module.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that manages and controls electronic accessories not related to the engine, such as power windows, locks, lights, wipers, security system, and climate controls.
Is this BCM difficult to install?
For most DIYers, installation is manageable. It involves disconnecting the battery and swapping the module, which is usually found under the driver’s side dashboard. Since we program it to your VIN, no further dealer programming is required for the vehicle to run.
Do I need to send my old BCM back?
No. This product comes with no core charge. You can keep your original part.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit VIN. We cannot ship your order until we receive this information to ensure the BCM is programmed correctly for your specific vehicle.
What if my airbag light is on after I install the new BCM?
This is a known possibility. It simply means the new BCM needs to be electronically introduced to the airbag system (SDM). A repair shop with a capable bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.