Are you chasing electrical gremlins in your GM truck or SUV? Flickering lights, malfunctioning windows, or a dashboard that seems to have a mind of its own are more than just annoyances—they’re classic signs of a failing Body Control Module (BCM). As the central nervous system for your vehicle’s electronics, a faulty BCM can cause a cascade of frustrating and unpredictable issues. This replacement BCM, part number 22846364, is the definitive solution to restore order and reliability to your vehicle’s essential functions.
We take the guesswork and high dealership costs out of the equation. Before this module ships, we program it specifically to your vehicle’s VIN, loading it with the latest GM software updates. This means it arrives ready for installation, eliminating the need for expensive specialty programming tools or a trip to the service center. It’s a direct-fit, plug-and-play solution designed to get your truck back to perfect working order quickly and efficiently.
From the Diagnostic Bay
I remember a 2013 Silverado 2500 that came into my shop with the strangest collection of symptoms. The customer said his radio would randomly turn off, the driver’s side power window wouldn’t work, and the dome light would stay on, draining the battery overnight. He’d already replaced the battery and checked fuses. My initial scan showed a slew of communication error codes (U-codes) pointing to a network issue. After tracing the wiring, I zeroed in on the BCM. These modules are the traffic cops for so many circuits, and when they start to fail internally, they send out confusing signals. Installing a pre-programmed Sierra Denali 2500 BCM like this one solved every single issue in one go, saving the customer hundreds in diagnostic time and dealership programming fees.
Is Your 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 interior and exterior lights (headlights, tail lights, dome lights).
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ The security system acting up or preventing the vehicle from starting.
- ✔ Wipers turning on by themselves or not working when you need them.
- ✔ The radio or infotainment system randomly shutting off or behaving strangely.
- ✔ Dashboard warning lights illuminating for no reason, such as the airbag or ABS light.
- ✔ Communication DTCs (Diagnostic Trouble Codes) like U0140, U0155, or U0100 stored in other modules.
A Straightforward Guide to Installation
Replacing your BCM is a manageable job for a confident DIYer. Located under the driver’s side of the dashboard, it’s accessible with basic hand tools. Follow these steps for a successful installation:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow all systems to power down completely.
- Access the Module: Remove the lower dash panel beneath the steering column to expose the BCM. It’s typically mounted to a bracket with several large electrical connectors.
- Document Connections: Before unplugging anything, take a quick photo of the connector layout. The plugs are often color-coded and keyed, but a picture provides great peace of mind.
- Remove the Old BCM: Carefully release the locking tabs on each electrical connector and disconnect them. Then, unbolt or unclip the old BCM from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM onto the bracket. Reconnect all the electrical connectors, ensuring each one clicks securely into place.
- Final Steps & Relearns: Re-install the lower dash panel and reconnect the negative battery terminal. Start the vehicle and check all functions. Depending on your vehicle, you may need to perform a couple of simple relearn procedures as detailed below.
Post-Installation Note: In some cases, additional steps may be required. If the airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a ‘Brake Pedal Position Relearn’ might be necessary for proper brake light and traction control operation. Always consult a factory service manual for specifics related to your exact model.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 22846364, 22737275, and 22846365. It is guaranteed to fit the following GM models:
- 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)
Please provide your VIN upon checkout to ensure we can program this Sierra Denali 2500 BCM with the correct software for your vehicle’s specific options and features.
Frequently Asked Questions
Do I need to send my old BCM back?
No, there is absolutely no core charge for this part. You can keep your original module.
Is this part difficult to install myself?
For most individuals with basic mechanical skills, this is a straightforward replacement. The module is located under the steering column and requires only basic hand tools to access. The main benefit is that our pre-programming saves you the difficult step of software flashing.
What does ‘programmed to my VIN’ mean?
It means we use your vehicle’s unique 17-digit Vehicle Identification Number (VIN) to load the exact software and settings your truck had when it left the factory, plus any subsequent official GM updates. This ensures all your specific options (like power seats, sunroof, etc.) work correctly.
What if my airbag light comes on after installation?
This can happen occasionally. It requires a ‘Setup SDM Primary Key in BCM’ procedure, which syncs the new BCM with the airbag system. This procedure must be done with a professional-grade diagnostic scan tool.
Will this fix my specific electrical problem?
This BCM is the central computer for most body electronics. If you’re experiencing multiple, seemingly unrelated electrical issues like the ones listed in the symptoms section, a failing BCM is the most common cause.