Are you chasing electrical gremlins in your GM truck or SUV? Flickering lights, power windows with a mind of their own, or a security system that randomly acts up are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and unpredictable problems. This isn’t just an annoyance; it can affect critical systems like your anti-lock brakes and stability control. Stop throwing parts at the problem and get the definitive solution.
This is a direct-fit replacement BCM, compatible with part numbers 22846365, 22737275, and 22846364. The best part? We eliminate the most significant hurdle of a BCM replacement: the trip to the dealership. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program the module with the latest official GM software specific to your truck. It arrives at your door ready for installation, saving you hundreds in dealer programming fees and diagnostic time.
Case Study: A Tricky Diagnosis
I remember a 2013 Silverado 2500 that came into my bay with a complaint that stumped two other shops. The owner said his radio would shut off, the door locks would cycle while driving, and he had a persistent “Service StabiliTrak” message. His battery and alternator checked out fine. When I connected my scan tool, I found a slew of communication error codes, most notably a U0140 – Lost Communication With Body Control Module. Instead of a hard failure, the BCM was failing intermittently, causing network-wide chaos. Installing a pre-programmed 2012-2014 Sierra 2500 BCM like this one restored all functions instantly. It’s a textbook example of how a single module can create dozens of seemingly unrelated symptoms.
Is Your GM Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ 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 system or keyless entry failing intermittently.
- ✔ Dashboard warning lights for ABS, Airbag, or Traction Control appearing without a clear cause.
- ✔ Communication error codes stored in the system (e.g., U0140, U0155, U0164).
- ✔ Wipers or climate control functions operating incorrectly.
- ✔ A no-start condition where the starter doesn’t engage, but the battery is good.
A Straightforward Guide to Your BCM Installation
Replacing the BCM is a manageable job for a confident DIYer or any professional technician. While this programmed 2012-2014 Sierra 2500 BCM is designed for a simple swap, always follow safety protocols.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10-15 minutes to allow all modules to power down completely.
- Locate the BCM: On most of these GM trucks and SUVs, the BCM is located under the driver’s side of the dashboard, often to the left of the steering column. It’s a black box with multiple large electrical connectors.
- Remove Connectors: Carefully unplug all electrical connectors from the old BCM. Most have a locking tab that needs to be depressed or a lever that needs to be swung to release the connector. Do not force them.
- Swap the Module: Unbolt or unclip the old BCM from its mounting bracket. Mount the new, pre-programmed BCM in its place.
- Reconnect Everything: Plug all the electrical connectors firmly into the new module. You should hear or feel a click as they lock into place. Reconnect the negative battery terminal.
- Perform Final Checks: Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc. Start the vehicle. Note that some post-install procedures may be necessary (see below).
Important Post-Installation Notes
While our programming handles the majority of the work, some vehicle systems may require a ‘handshake’ with the new BCM. This is normal and depends on your vehicle’s specific configuration.
- 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 airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light and traction control operation.
Disclaimer: We are committed to providing a reliable, pre-programmed solution. However, vehicle systems vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility List
This module is a guaranteed fit for the following GM vehicles. Please match your part number (22846365, 22737275, or 22846364) or vehicle model to ensure compatibility.
- 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 (incl. Denali): 2012-2014
- GMC Yukon / Yukon XL (incl. Denali): 2012-2014
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM acts as the central computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, the security system, and more. When it fails, you get strange electrical issues.
What do you mean by ‘programmed to my VIN’?
Every vehicle has unique options and security information stored in its BCM. We take your Vehicle Identification Number (VIN) and flash this module with the specific software and settings for your exact truck, ensuring it works correctly right out of the box.
Is this really a plug-and-play solution?
For over 95% of vehicles, yes. You install it, and it works. In a small number of cases, security-related systems like the airbag or brake position sensor may require a simple relearn procedure with a mechanic’s scan tool, as detailed in our installation notes.
Why is this better than buying one from a junkyard?
A used BCM from another vehicle is programmed for THAT vehicle. It will not work correctly in your truck and will likely prevent it from starting. Our service provides a fully tested module programmed specifically for YOU.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your original module, which is helpful if you ever want to revert or have it for reference.