Are you tired of chasing electrical gremlins in your GM truck or SUV? One minute the power windows work, the next they don’t. The security light flashes randomly, or worse, your vehicle won’t start at all. As a technician with over 20 years of experience, I’ve seen these exact frustrations hundreds of time. The culprit is often a failing Body Control Module (BCM), the central command center for your vehicle’s comfort and convenience features.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a reliable Body Control Module, compatible with part numbers 22737275, 22846365, and 22846364. The best part? It arrives at your door pre-programmed with the latest GM software, specifically matched to your truck’s VIN. This means you can skip the expensive trip to the dealership for programming. You get a direct-fit component that restores full functionality, getting you back on the road with confidence.
From the Diagnostic Bay: The Case of the Haunted Silverado
A customer brought in a 2013 Silverado 2500 with a list of bizarre issues: the radio would turn on and off by itself, the dome light would flicker, and sometimes the horn would honk when he used the turn signal. He’d already replaced the battery and checked all the fuses. After connecting my scan tool, I found multiple ‘loss of communication’ codes (U-codes) pointing to the BCM. These modules can fail internally, causing data corruption on the network and creating these ghost-like symptoms. We installed a VIN-programmed BCM like this one, and every single issue was resolved instantly. It’s a common failure, but thankfully, a straightforward fix with the right part.
Common Signs of a Failing BCM
If your vehicle is experiencing any of the following, a faulty BCM could be the cause. This 2012-2013 Sierra 1500 BCM is designed to resolve these exact problems.
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ A flashing security light on the dashboard, often leading to a no-start condition.
- ✔ The horn, wipers, or radio behaving unpredictably.
- ✔ Diagnostic Trouble Codes (DTCs) related to loss of communication, such as U0140, U0155, or U0100.
- ✔ False warnings on the driver information center (DIC).
A Straightforward Guide to BCM Installation
Replacing the BCM is a job most DIYers can handle with basic tools. The module is typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to fully discharge.
- Locate the BCM: Remove the lower dash panel beneath the steering wheel to gain access to the module. It’s a black box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug all wiring harnesses 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 Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the wiring harnesses, ensuring each one clicks into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position (without starting the engine) and test all body functions—windows, locks, lights, etc.
Important Post-Installation Notes
While our programming handles the heavy lifting, some vehicles may require a simple relearn procedure to sync all systems perfectly. This is normal.
- 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 is only required if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary for proper brake light and traction control operation.
- No Core Charge: You don’t need to send your old part back. Keep it!
Verified Vehicle Compatibility
This module is a guaranteed fit for the following GM vehicles. Please confirm your model and year before ordering.
ESCALADE 12-14
ESCALADE ESV 12-14
ESCALADE EXT 12-13
SIERRA 1500 PICKUP 12-13
SIERRA 2500 PICKUP 12-14
SIERRA 3500 PICKUP 12-14
SIERRA DENALI 1500 12-13
SIERRA DENALI 2500 12-14
SIERRA DENALI 3500 12-14
SILVERADO 1500 PICKUP 12-13
SILVERADO 2500 PICKUP 12-14
SILVERADO 3500 PICKUP 12-14
SUBURBAN 1500 12-14
SUBURBAN 2500 12-13
TAHOE 12-14
YUKON 12-14
YUKON XL 1500 12-14
YUKON XL 2500 12-13
Frequently Asked Questions
What do I need to do after I purchase?
After you place your order, you must provide us with your vehicle’s 17-digit VIN. We need this to program the module with the correct software and vehicle-specific options before we can ship it to you.
Is this a true plug-and-play part?
Yes, for over 95% of installations. Because we pre-program it to your VIN, no additional dealer programming is required for the BCM itself. In some rare cases, minor relearn procedures for systems like the airbag or brake pedal sensor may be needed, as noted above.
Will this fix my specific electrical problem?
This 2012-2013 Sierra 1500 BCM is designed to fix the common symptoms listed above. While a BCM is a very common point of failure, we always recommend proper vehicle diagnostics to confirm it is the root cause of your issue before ordering.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep your old module.
How do I know if this part number will fit my truck?
This module directly replaces part numbers 22737275, 22846365, and 22846364. If your original module has one of these numbers, or your vehicle is on our compatibility list, this is the correct part for you.