Are you battling frustrating electrical gremlins in your GM truck or van? Issues like flickering lights, malfunctioning power windows and locks, or a persistent ‘Service Theft System’ warning are often signs of a failing Body Control Module (BCM). The BCM acts as the central hub for your vehicle’s body electronics, and when it fails, it can cause a wide range of confusing and intermittent problems. This replacement BCM is the definitive solution to restore your vehicle’s functionality and peace of mind.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We pre-program the module to your vehicle’s specific VIN before shipping, loading it with the latest software updates from GM. This critical step ensures compatibility and saves you from a costly trip to the dealership for programming. Simply provide your VIN after purchase, and we’ll handle the rest, delivering a part that’s ready for installation right out of the box.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security or anti-theft system light is illuminated, often preventing the engine from starting.
- ✔ Wipers or horn activating on their own.
- ✔ Inaccurate or dead gauges on the instrument panel.
- ✔ Communication loss codes (U-codes) when scanned with a diagnostic tool.
Installation and Post-Install Notes
Physical installation is straightforward, typically requiring basic hand tools to access the module under the steering column or in the center dash area. Once the new module is connected, most functions will be immediately restored. However, depending on your specific vehicle, a couple of additional steps may be needed:
- Airbag System Sync: If the 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 relearn to ensure correct brake light operation.
This module is a direct replacement for part numbers: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Please verify your part number and check the detailed fitment list to ensure compatibility.
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, and the security system.
Is this BCM truly plug-and-play?
Yes, for the most part. We program it to your VIN, so it communicates with your truck correctly. In some cases, as noted, a simple relearn procedure for the airbag or brake sensor may be required using a diagnostic tool.
How do I give you my vehicle’s VIN?
After you complete your purchase, you will receive instructions on how to send us your VIN. We cannot ship your order until we receive your VIN to perform the necessary programming.
Do I need to return my old, faulty BCM?
No. There is no core charge for this part. You can keep your original module.
Will this fix my ‘Service Theft System’ light?
A faulty BCM is a very common cause of a ‘Service Theft System’ warning and a no-start condition. Replacing it with our pre-programmed module is a highly effective solution for this specific problem.
Where is the BCM located on my truck?
On most Silverado and Sierra pickups, the BCM is located under the driver’s side of the dashboard, near the steering column. On Express and Savana vans, it is typically found in the center of the dash.