Is Your Truck Experiencing Strange Electrical Issues?
The Body Control Module, or BCM, is the central command center for your truck’s body electronics. It manages everything from your power windows and door locks to your interior lights, security system, and dashboard warnings. When the BCM starts to fail, it can cause a cascade of confusing and frustrating problems that seem unrelated. If you’re dealing with electrical gremlins in your Silverado, Sierra, or other compatible GM vehicle, a failing BCM is a very likely culprit.
From the Diagnostic Bay
We had a 2013 Sierra 2500 in the shop that was driving the owner crazy. The radio would turn off randomly, the dome light would flicker, and sometimes the power locks wouldn’t respond. He’d already replaced the battery and checked all the fuses. We hooked up our scan tool and saw a dozen intermittent communication codes pointing in different directions. Instead of chasing ghosts, we went straight to the BCM. After swapping it with our pre-programmed unit, every single issue disappeared. It wasn’t a dozen small problems; it was one central failure masquerading as many.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on, not turning on, or flickering.
- ✔ The security system acting erratically or preventing the vehicle from starting.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Inaccurate gauge readings or warning lights on the dashboard.
- ✔ Radio or infotainment system malfunctions.
- ✔ Key fob not being recognized or working intermittently.
The Simple, Reliable Solution for Your 2012-2014 Silverado BCM
Don’t let a faulty module keep your truck down. This Body Control Module is a direct-fit replacement for part number 22846364 and its interchanges. The best part? We handle the complicated part for you. Simply provide us with your vehicle’s VIN during checkout, and we will program the module with the latest GM software updates specific to your truck. This eliminates the need for an expensive trip to the dealership for programming. Your new BCM arrives ready for installation, making the repair process as simple as possible.
Installation and Post-Install Notes
The BCM is typically located under the steering column on the driver’s side. While the physical replacement is straightforward for a DIYer with basic tools, please be aware of potential post-installation procedures:
- Airbag System Sync: If your 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 recalibration to ensure proper function of the brake lights and stability control systems.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM acts as the main computer for your vehicle’s comfort and convenience features. It controls non-engine related functions like power windows, locks, lights, security system, wipers, and more.
Do I need to program this BCM?
No. We program the module to your vehicle’s specific VIN before we ship it. It arrives ready to be installed, saving you a trip to the dealership.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to access the exact factory software and vehicle options for your truck. This ensures the BCM works perfectly with all the features your vehicle was built with.
Is this a difficult part to replace?
The physical replacement is generally straightforward, as the BCM is located under the driver’s side dash. However, some post-installation steps, like an airbag system sync, may require a professional-grade diagnostic tool.
Will this fix my specific electrical problem?
This part is the solution for a wide range of electrical issues. If you’re experiencing several of the symptoms listed above, a failing BCM is the most common cause.
What part numbers does this module replace?
This module is a direct replacement for part numbers 22846364, 22737275, and 22846365, ensuring broad compatibility.