Are you chasing down electrical gremlins in your GM truck or SUV? From flickering dashboard lights and erratic gauges to power windows and door locks with a mind of their own, a failing Body Control Module (BCM) can turn your reliable workhorse into a source of daily frustration. As the central command center for your vehicle’s body electronics, when the BCM starts to fail, it creates a cascade of confusing and often intermittent problems. Stop guessing and swapping parts—get the definitive solution.
This is a direct-fit replacement Body Control Module, a vital component for 2012-2014 Sierra Denali 2500 and a wide range of other GM vehicles. The best part? We handle the complicated part for you. Before we ship it, we program the module with the latest GM software updates, specifically matched to your vehicle using the VIN you provide. This means you get a component that’s ready for installation right out of the box, saving you from expensive dealership programming fees and diagnostic headaches. This is the most efficient way to restore your vehicle’s full functionality.
From the Diagnostic Bay
I once had a 2013 Silverado 2500 in my shop with a classic “mystery drain” on the battery. The owner had already replaced the battery and alternator, but it would still be dead after sitting for two days. After hooking up an ammeter, I saw a significant draw. By pulling fuses one by one, I isolated the circuit to the BCM. The internal circuitry had failed, preventing the module from going to “sleep.” It was keeping the entire data network active, slowly draining the battery overnight. A new, programmed BCM like this one solved the issue instantly. It’s a fix I’ve performed hundreds of times on these trucks.
Common Signs of a Failing BCM
- ✔ Power windows, mirrors, or door locks operating intermittently or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not working correctly.
- ✔ The security system or horn activating randomly.
- ✔ Dashboard warning lights appearing for no reason (e.g., ABS, Airbag).
- ✔ Communication error codes, such as U0140 (Lost Communication With Body Control Module).
- ✔ A persistent parasitic battery drain that you can’t trace to other components.
- ✔ Remote key fob not working reliably.
A Straightforward Guide to BCM Installation
Replacing the BCM is a manageable job for a DIYer with basic tools. It’s typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Access the Module: You may need to remove lower dash panels or trim to get a clear view of the BCM. It’s a black plastic box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug all wiring harnesses from the old BCM. They have locking tabs, so be gentle. 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 reconnect all wiring harnesses. You should hear a ‘click’ as they lock into place.
- Reconnect Power: Reattach the negative battery terminal.
- Test and Verify: Start the vehicle and test all related functions: lights, locks, windows, radio, and wipers. Check the dashboard for any new warning lights.
Important Post-Installation Steps
While our programming handles the core functions, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of these potential procedures:
- 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 new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure proper brake light and traction control operation.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step.
Will This Fit My Truck or SUV?
This module is a direct replacement for part numbers 22846364, 22737275, and 22846365. It is confirmed to fit the following GM models. Please verify your vehicle is on the list before ordering.
Cadillac Escalade (2012-2014), Escalade ESV (2012-2014), Escalade EXT (2012-2013)
Chevrolet Avalanche 1500 (2012-2013)
Chevrolet Silverado 1500/2500/3500 Pickup (2012-2014)
Chevrolet Suburban 1500 (2012-2014), Suburban 2500 (2012-2013)
Chevrolet Tahoe (2012-2014)
GMC Sierra 1500/2500/3500 Pickup (2012-2014)
GMC Sierra Denali 1500/2500/3500 (2012-2014)
GMC Yukon (2012-2014)
GMC Yukon XL 1500 (2012-2014), Yukon XL 2500 (2012-2013)
Frequently Asked Questions
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
What information do you need from me?
After you place your order, we require your vehicle’s 17-digit VIN (Vehicle Identification Number) to program the module correctly before shipping.
Is this a plug-and-play part?
For most functions, yes. Because we pre-program it to your VIN, it eliminates the need for dealer-level programming. However, as noted, certain systems like the airbag or brake sensor may require a simple relearn procedure with a scan tool.
Will this fix my specific problem?
This BCM will correct issues directly caused by a faulty module. While the symptoms listed are very common, proper vehicle diagnostics are always recommended to confirm the BCM is the root cause of your problem.
Where is the BCM located on my 2012-2014 Sierra BCM?
On the 2012-2014 Sierra and related GM trucks/SUVs, the Body Control Module is located under the driver’s side dashboard, typically attached to a bracket near the steering column.