End the Electrical Chaos in Your GM Truck
If your 2012-2014 Sierra Denali 3500 is acting possessed—with flickering dash lights, unresponsive power windows, or a security system that randomly goes off—you’re likely dealing with a failing Body Control Module (BCM). As the central command center for your truck’s electronics, when the BCM goes bad, it can create a cascade of frustrating and seemingly unrelated problems. I’ve seen it countless times in my 20+ years as a technician: a perfectly good truck rendered unreliable by one faulty module. This isn’t just an inconvenience; it can affect critical systems like your exterior lighting and anti-theft deterrents.
This is your direct-fit, reliable solution. We offer a replacement BCM, part number 22846365, that arrives at your door pre-programmed with the latest GM software specifically for your vehicle’s VIN. You skip the expensive dealership visit, the programming fees, and the hassle. By providing your VIN at checkout, you receive a module that is ready for installation, designed to restore the function and reliability you depend on from your truck. This is the most efficient way to solve those baffling electrical issues and get your vehicle back to operating as it should.
Case Study: A Tricky Diagnosis
A customer brought in his 2013 Silverado 2500 with a laundry list of complaints: the radio would cut out, the driver’s side window worked intermittently, and the ‘Service StabiliTrak’ message kept appearing. He’d already replaced the battery and checked all the fuses. A scan showed a dozen communication codes (U-codes), pointing to a network-wide issue. Instead of chasing each individual problem, my experience pointed straight to the central hub: the BCM. After confirming power and ground to the module were good, we installed a VIN-programmed BCM. Every single electrical gremlin vanished. It’s a classic example of how a failing 2012-2014 Sierra BCM can mimic multiple other failures, making it a critical component to diagnose correctly.
Signs Your Body Control Module is Failing
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights).
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ The security system or keyless entry fails or acts unpredictably.
- ✔ Warning lights on the dashboard illuminate for no reason (e.g., Service Airbag, StabiliTrak).
- ✔ Communication Diagnostic Trouble Codes (DTCs) are present, such as U0140, U0155, or U0100.
- ✔ The vehicle won’t start, or the starter engages erratically.
- ✔ Radio or infotainment system malfunctions.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the BCM: On most of these GM trucks and SUVs, the BCM is located under the driver’s side of the dashboard, near the steering column. You may need to remove a lower dash panel for access.
- ✔ Disconnect and Remove: Carefully unplug all the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely plug in all the electrical connectors. Ensure they click into place.
- ✔ Reconnect Power: Reconnect the negative battery terminal.
- ✔ Post-Installation Checks: Start the vehicle and test all body functions—lights, windows, locks, etc. Refer to the post-installation procedures below if any warning lights appear.
Important Post-Installation Information
While this module is programmed to your VIN for a streamlined installation, some vehicle systems may require a ‘handshake’ with the new BCM. This is normal. The two most common procedures are:
- Airbag System Sync: If the airbag light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be required to ensure brake lights and traction control function correctly.
Disclaimer: We strongly recommend consulting a factory service manual or a qualified technician for vehicle-specific instructions. There is no core charge for this part; you can keep your old module.
Verified Vehicle Compatibility
This Body Control Module is a direct replacement for part numbers 22846365, 22737275, and 22846364. It fits a wide range of 2012-2014 General Motors trucks and SUVs. Please verify your part number or contact us with your VIN to confirm fitment. Compatible models include:
- Cadillac Escalade, ESV, EXT (2012-2014)
- Chevrolet Avalanche 1500 (2012-2013)
- Chevrolet Silverado 1500, 2500, 3500 (2012-2014)
- Chevrolet Suburban 1500, 2500 (2012-2014)
- Chevrolet Tahoe (2012-2014)
- GMC Sierra 1500, 2500, 3500 (2012-2014)
- GMC Sierra Denali 1500, 2500, 3500 (2012-2014)
- GMC Yukon & Yukon XL 1500, 2500 (2012-2014)
Frequently Asked Questions about the 2012-2014 Sierra BCM
Frequently Asked Questions
What information do you need to program the BCM?
We need your vehicle’s 17-digit Vehicle Identification Number (VIN). Please provide it during checkout or send it to us in a message after your purchase so we can program the module before shipping.
Do I need to send my old BCM back?
No. There is no core charge or requirement to return your original module. This simplifies the process for you.
Will this fix my specific problem?
This BCM corrects issues caused by a faulty module. If your vehicle exhibits symptoms like erratic lights, non-working power accessories, or communication error codes, a failing BCM is a very common cause. Proper diagnosis is always recommended.
Is any additional programming required after installation?
Our programming handles the main functions, making it a near plug-and-play solution. However, as noted, certain systems like the airbag (SRS) or brake pedal position sensor may require a simple relearn procedure with a professional scan tool if warning lights appear.
What is the difference between this and a BCM from a junkyard?
A used BCM from another vehicle will be programmed to that vehicle’s VIN and options. It will not work correctly in your truck and can cause even more issues. Our modules are professionally tested and programmed specifically for YOUR truck.
How hard is it to replace the BCM myself?
For someone with basic mechanical skills, it’s a very manageable job. The module is typically located under the dash and held in by a few bolts or clips. The main challenge is accessing it. Following our installation guide should make the process clear.