Is Your GM Truck or SUV Plagued by Bizarre Electrical Issues?
If your 2012-2014 GM vehicle is acting possessed—with flickering lights, malfunctioning power windows, erratic gauges, or a security system that won’t cooperate—the root cause is often a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it starts to fail, it can create a cascade of frustrating and seemingly unrelated problems. Don’t let a faulty module keep your truck off the road. This genuine, pre-programmed BCM is the definitive solution to restore full functionality and peace of mind.
From the Diagnostic Bay
We had a 2013 Silverado 2500 in the shop that was a real head-scratcher. The owner had replaced the battery three times in six months, convinced he had a parasitic draw he couldn’t find. The dome lights would randomly stay on, the radio would sometimes not turn off with the key, and the battery would be dead by morning. After hours of tracing wires, we finally isolated the issue: the BCM wasn’t properly entering its ‘sleep’ mode, causing a constant, low-level power drain. Replacing the BCM solved the phantom draw and all the other strange electrical gremlins instantly. It’s a classic case where the most complex problems point to a single computer failure.
Symptoms of a Failing 2012-2013 Sierra BCM
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your Body Control Module needs replacement:
- ✔ Power windows or door locks operating intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or failing to turn on.
- ✔ The security system or keyless entry malfunctioning.
- ✔ Dashboard warning lights appearing for no reason (e.g., ABS, Airbag, Service 4WD).
- ✔ The horn honking randomly or not working when pressed.
- ✔ HVAC (heating and air conditioning) controls being unresponsive.
- ✔ A persistent ‘no-start’ condition where the engine cranks but won’t fire up due to security system confusion.
- ✔ Unexplained battery drain that leaves you with a dead battery.
The Plug-and-Play Solution for Your Truck
The biggest hurdle in replacing a BCM is the complex and expensive programming required at a dealership. We eliminate that step entirely. When you purchase this module, you simply provide us with your vehicle’s 17-digit VIN. Our technicians will then flash the unit with the latest, most stable software direct from GM, ensuring it is perfectly matched to your truck’s specific options and configuration. This makes the installation process as simple as possible—no specialized tools, no trip to the dealer, and no hidden fees.
This module is a direct replacement for part numbers 22846365, 22737275, and 22846364 and fits a wide range of GM trucks and SUVs, including the Sierra, Silverado, Tahoe, Suburban, Yukon, and Escalade from 2012 to 2014. Please verify your part number or consult the fitment list to ensure compatibility.
Installation and Post-Install Notes
The BCM is typically located under the driver’s side of the dashboard, near the steering column. While the physical swap is straightforward for a DIY mechanic, please be aware of potential post-installation procedures. Depending on your vehicle’s specific systems, you may need a professional scan tool to perform certain relearn or synchronization procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required to sync the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: Some models may require a recalibration of the brake pedal position sensor to ensure correct operation of the brake lights and stability control systems.
Always consult a factory service manual for your specific vehicle for detailed instructions. There is no core charge for this part, so you can keep your original module.
Frequently Asked Questions
Do I need to get this BCM programmed by a dealer?
No. This is the primary benefit of our service. We program the BCM to your vehicle’s VIN before we ship it to you. It arrives ready for installation, saving you hundreds in dealership programming fees.
Where is the BCM located on my 2013 Sierra or Silverado?
The Body Control Module is typically located under the driver’s side dashboard, to the left of the steering column. It’s a black box with multiple large electrical connectors.
What information do you need from me?
After you place your order, we will need your vehicle’s 17-digit Vehicle Identification Number (VIN). This is essential for us to load the correct software and vehicle-specific options into the module.
What happens if the airbag light comes on after I install it?
This is a known possibility. It means the new BCM needs to be electronically ‘introduced’ to the airbag module (SDM). A repair shop with a professional-grade bidirectional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Is this part compatible with other part numbers?
Yes, this BCM with part number 22846365 is a direct, interchangeable replacement for part numbers 22737275 and 22846364.