Is Your Truck’s Electrical System Acting Possessed?
If you’re dealing with bizarre and frustrating electrical issues in your 2012-2014 GM truck or SUV, a failing Body Control Module (BCM) is the most likely culprit. The BCM is the central command center for your vehicle’s body electronics, managing everything from power windows and door locks to the interior lights and security system. When it starts to fail, it can create a cascade of seemingly unrelated problems that can be a nightmare to diagnose.
From the Diagnostic Bay
We had a 2013 Sierra 2500 in the shop that was driving the owner crazy. The radio would randomly shut off, the dome light would flicker while driving, and occasionally, the truck wouldn’t start—just a click. The battery was new, the alternator tested fine, and all the fuses were good. After hours of chasing wires, we finally traced the intermittent power loss back to a faulty BCM. It was sending erratic signals across the vehicle’s network, causing chaos. Replacing it with a properly programmed unit solved every single issue instantly.
Common Symptoms of a Failing GM BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Dashboard lights flickering or warning lights staying on for no reason (like the airbag light).
- ✔ The security system acting up, causing the alarm to go off randomly or preventing the engine from starting.
- ✔ Interior or exterior lights not working correctly (staying on or not turning on at all).
- ✔ The horn honking unexpectedly.
- ✔ Communication errors with other vehicle modules, leading to a no-start condition.
- ✔ Wipers behaving erratically or not parking in the correct position.
The Plug-and-Play Solution: A Pre-Programmed Silverado Body Control Module
Don’t let a faulty BCM keep your truck off the road or force you into an expensive trip to the dealership. This is a direct-fit replacement Body Control Module for a wide range of GM vehicles, including the Silverado, Sierra, Yukon, Tahoe, Suburban, and Escalade. The critical difference is our service: we program the module to your vehicle’s specific VIN before we ship it. This ensures that it integrates seamlessly with your truck’s existing systems, eliminating the need for costly dealer-only programming tools. It’s the simplest, most effective way to restore your vehicle’s electronic functions.
This module is a direct replacement for part numbers 22737275, 22846365, and 22846364. Simply provide your VIN at checkout, and we’ll handle the rest, shipping you a part that’s ready for installation.
Installation and Post-Install Considerations
The BCM is typically located under the driver’s side of the dashboard, near the steering column. While installation is a straightforward unbolt-and-replace process, some vehicles may require a couple of simple relearn procedures after the new module is installed. These can sometimes be completed by a local mechanic or with a high-end diagnostic tool.
- Airbag System Sync: If your airbag warning light illuminates after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure proper brake light and traction control operation.
Please note: Specific procedures can vary. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that acts as the central hub for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, security system, and more.
Is this BCM truly plug-and-play?
Yes, for most vehicles. We program it to your VIN, so it’s ready to be installed. In some cases, as noted above, minor relearn procedures for systems like the airbags or brake sensor may be required with a professional scan tool.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship the module until we receive and validate your VIN.
What happens if the airbag light is on after I install it?
This indicates the new BCM needs to be electronically ‘shaken hands’ with the airbag’s computer (SDM). A mechanic with a bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to send my old BCM back?
No. This purchase has no core charge. You can keep your original module.