Restore Your Truck’s Electrical Systems with a Plug-and-Play Solution
Is your 2012-2013 Avalanche 1500 acting possessed? Flickering lights, malfunctioning power windows, or a security system that has a mind of its own are classic signs of a failing Body Control Module (BCM). As the central hub for your truck’s comfort and convenience electronics, a faulty BCM can cause a cascade of frustrating, seemingly unrelated problems. In my 20+ years of diagnostics, I’ve seen these modules cause headaches for countless owners, often leading to expensive and incorrect repairs before the true culprit is found.
Forget the dealership hassle and high programming fees. We offer a direct, reliable fix. This Body Control Module, part number 22846365, arrives at your door pre-programmed with the latest GM software, specifically matched to your vehicle’s VIN. This critical step ensures all your truck’s specific options and security features work correctly right out of the box. You get a dependable part that restores full functionality, saving you time, money, and diagnostic frustration.
A Technician’s Notebook
I remember a 2013 Silverado (which uses this same BCM platform) that came into the shop with a bizarre list of complaints. The radio would turn on by itself, the driver’s side power window worked intermittently, and the dome light would stay on, draining the battery overnight. The owner had already replaced the battery and the window switch with no luck. After connecting my scan tool, I saw a handful of U-codes (U0140, U0155) indicating a loss of communication between various modules. This pointed me directly to the BCM. Instead of a dozen small problems, it was one central failure. We installed a VIN-programmed BCM, and every single issue was resolved instantly. It’s a perfect example of how this one module can be the key to solving a vehicle’s most confusing electrical gremlins.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on or not working at all.
- ✔ The security system light is on, or the alarm randomly triggers.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire up.
- ✔ Dashboard warning lights flickering without a clear cause.
- ✔ Communication error codes stored in the system (e.g., U0140, U0155, B1001).
- ✔ Wipers or climate control functions behaving unpredictably.
A Straightforward Guide to Installation
Installing your new 2012-2013 Avalanche BCM is a manageable job for a DIYer with basic tools. The most complex part—the programming—is already done for you.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On these GM trucks and SUVs, the BCM is typically 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 the Old Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be pressed to release. Take note of their orientation.
- Install the New BCM: Mount the new module in the same position as the old one and securely plug in all the electrical connectors. You should hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, windows, locks, wipers, etc.
Important Post-Installation Notes
While this module is VIN-programmed for your vehicle, some GM models require a final handshake between modules after installation. This is normal and can often be done with a high-end diagnostic tool.
- No Core Charge: You are not required to return your old module. Keep it as a spare or dispose of it responsibly.
- 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 new BCM with the airbag system. This is only necessary if the light appears.
- 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: Always consult a factory service manual or a qualified technician if you are unsure about any step. Vehicle systems can vary.
Verified Vehicle Compatibility
This BCM is a direct replacement for part numbers 22846365, 22737275, and 22846364 and fits a wide range of GM trucks and SUVs. Please verify your vehicle is on this list:
- AVALANCHE 1500: 2012-2013
- ESCALADE / ESV / EXT: 2012-2014
- SIERRA 1500 / DENALI 1500: 2012-2013
- SIERRA 2500 / 3500 / DENALI: 2012-2014
- SILVERADO 1500: 2012-2013
- SILVERADO 2500 / 3500: 2012-2014
- SUBURBAN 1500 / 2500: 2012-2014
- TAHOE: 2012-2014
- YUKON / YUKON XL 1500 / YUKON XL 2500: 2012-2014
Frequently Asked Questions
Do I need to send you my VIN?
Yes. After purchase, you must provide us with your vehicle’s 17-digit VIN. We use this to program the BCM with the correct software and vehicle options, ensuring it works properly upon installation.
Is this part difficult to install myself?
The physical replacement is straightforward for most DIYers. It involves removing a dash panel and swapping connectors. Since we handle the programming, you avoid the most complex part of the job.
What is a core charge? Do I need to send my old part back?
There is no core charge for this BCM. You can keep your old module, which saves you the time and expense of return shipping.
Will this fix my ‘Service StabiliTrak’ or ‘Service Traction Control’ message?
While a failing BCM can contribute to these warnings, they can also be caused by other components like wheel speed sensors. A post-installation Brake Pedal Position Relearn may be needed to clear these messages if the BCM is the root cause.
What tools are needed for the post-installation procedures?
Procedures like the Airbag System Sync and Brake Pedal Position Relearn require a bi-directional professional diagnostic scan tool, such as those used by automotive shops. These are not typically required but are necessary if specific warning lights appear after installation.