Restore Your Truck’s Electrical Stability
If you’re dealing with baffling electrical issues in your 2010 Chevrolet Avalanche 1500—like flickering lights, a dead instrument cluster, erratic power windows, or even a no-start condition—a failing Body Control Module (BCM) is the likely culprit. As the central nervous system for your truck’s body electronics, the BCM’s health is critical. This isn’t just about convenience; it’s about functionality and safety. A faulty BCM can compromise everything from your security system to your brake light operation.
We take the guesswork and high dealership costs out of the equation. This replacement BCM arrives at your door pre-programmed with the latest GM software, specifically matched to your truck’s VIN. This means no expensive trips to the dealer for programming. It’s a direct-fit, reliable solution designed to restore the precise electronic functions your vehicle had when it left the factory.
Case Study: The Ghost in the Machine
I once had a 2010 Tahoe (which uses the same platform as the Avalanche) in my bay that was driving the owner crazy. The radio would turn on and off by itself, the dome lights would stay on, and occasionally the security light would flash, preventing it from starting. The owner had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw multiple U-codes, specifically U0140 (Lost Communication with BCM). This pointed directly to a communication breakdown. We swapped in a VIN-programmed BCM like this one, and every single phantom issue vanished instantly. It’s a classic failure I’ve seen hundreds of times on these GM platforms.
Is Your Avalanche Showing These BCM Failure Signs?
A failing BCM can manifest in numerous ways, often seeming unrelated. Here are the most common symptoms I’ve diagnosed in my 20+ years of experience. If you’re noticing several of these, it’s time to inspect your 2010 Avalanche 1500 BCM.
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Dashboard warning lights (like Airbag, ABS, or Security) illuminating for no reason.
- ✔ The horn sounding unexpectedly or not working at all.
- ✔ Interior and exterior lights flickering, staying on, or not turning on.
- ✔ Communication error codes, most commonly U0140, stored in other modules.
- ✔ The vehicle’s anti-theft system preventing the engine from starting.
- ✔ Radio or infotainment system behaving erratically.
Your Straightforward BCM Installation Guide
Replacing the BCM is a manageable job for a confident DIYer. On the 2010 Avalanche, it’s typically located under the driver’s side of the dashboard, near the steering column. Always wear safety glasses.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow capacitors to discharge.
- Locate the BCM: Remove the lower dash panel beneath the steering wheel to gain access to the module. It will have several large multi-pin electrical connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket and remove it.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring each one clicks firmly into place.
- Reconnect and Test: Reinstall the dash panel, reconnect the negative battery terminal, and start the vehicle. Test all body functions: lights, windows, locks, radio, etc.
- Perform Relearns (If Needed): As noted below, some vehicles may require a Brake Pedal Position Relearn or an Airbag System Sync if warning lights are present. This may require a professional scan tool.
Guaranteed Fitment for Your GM Vehicle
This Body Control Module is a direct replacement for part number 15837419 and a wide range of other original equipment part numbers. While this listing is focused on the 2010 Avalanche 1500 BCM, it also fits the following vehicles. Please verify your part number or contact us with your VIN to ensure compatibility.
Fits models such as: Acadia (07-12), Avalanche 1500 (10), Caprice (11-13), Captiva Sport (12), CTS (08-13), DTS (06-11), Enclave (08-12), Equinox (07-09), Escalade/ESV/EXT (10), Express/Savana Vans (08-12), G8 (08-09), Hummer H2 (08-09), Impala (06-13), Lucerne (06-11), Monte Carlo (06-07), Outlook (07-10), SRX (07-09), STS (10), Suburban (10), Tahoe (10), Torrent (07-09), Traverse (09-12), Vue (08-10), Yukon/XL (10).
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 BCM truly plug-and-play?
Yes, it comes programmed to your vehicle’s VIN. In most cases, it is a direct installation. However, depending on your specific vehicle and its options, a couple of simple relearn procedures, like for the brake pedal position sensor, may be needed.
What happens if my airbag light comes on after installation?
This is uncommon, but if it happens, it means the new BCM needs to be synced with the airbag system’s SDM. A professional technician with a high-level scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve it.
What information do you need from me?
After you place your order, we will need you to provide your vehicle’s 17-digit VIN (Vehicle Identification Number). We cannot program and ship the module without it.
Will this fix my specific problem?
This BCM will fix problems directly caused by a faulty BCM. While the symptoms we’ve listed are common indicators, we always recommend a proper diagnosis by a qualified mechanic to confirm the BCM is the root cause before ordering.