Restore Your Truck’s Electrical System with a Hassle-Free Solution
Is your 2010 Chevrolet Avalanche 1500 acting possessed? Flickering lights, power windows with a mind of their own, or a security system that won’t cooperate are classic signs of a failing Body Control Module (BCM). As an experienced technician, I’ve seen these exact issues countless times. The BCM is the electronic nerve center for your truck’s comfort and convenience features, and when it fails, it can cause a cascade of frustrating, seemingly unrelated problems. Don’t let a faulty module sideline your truck. We offer a reliable, straightforward solution that gets you back on the road without the typical dealership headaches.
This isn’t just a replacement part; it’s a complete service. We perform a professional cloning service, transferring the vital configuration data from your original, failing BCM directly onto this replacement unit. This means the module arrives at your door pre-programmed for your specific vehicle. You simply install it, and you’re done. No need for expensive diagnostic tools or a costly trip to the dealer for programming. It’s the most efficient way to solve your BCM problems.
A Technician’s Notebook: The Intermittent Gremlin
A customer brought in his 2010 Tahoe—which uses the same platform as your Avalanche—with a truly maddening issue. The radio would randomly shut off, the dome lights would flicker while driving, and occasionally the power locks wouldn’t respond. He’d already replaced the battery and checked the main grounds. Diagnostics showed no hard fault codes, just a few intermittent communication errors (U-codes) that would come and go. In my experience, when you have multiple, unrelated body electronic systems acting up intermittently, the BCM is the prime suspect. We connected a scope and saw noisy, inconsistent voltage on one of the BCM’s communication lines. By providing a cloned 2010 Avalanche 1500 BCM, we were able to fix all the problems in one shot, saving the customer from chasing down individual component issues that weren’t actually the root cause.
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 interior and exterior lights (headlights, tail lights, dome lights).
- ✔ Power windows or door locks operating intermittently or not at all.
- ✔ The security system engaging randomly or preventing the vehicle from starting.
- ✔ The horn honking unexpectedly.
- ✔ Dashboard warning lights that have no apparent cause.
- ✔ Communication error codes, such as U0140 (Lost Communication with BCM).
- ✔ Wipers or radio malfunctioning.
A Straightforward Guide to Installation
Thanks to our cloning service, installing your replacement BCM is a plug-and-play process. While the exact location can vary, the BCM in your 2010 Avalanche is 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 and wait a few minutes before beginning work.
- Locate the BCM: Remove any necessary trim panels under the driver’s side dash to access the module. It’s a black plastic box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors from the old BCM. Note their orientation. Then, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location as the original.
- Reconnect Everything: Securely plug all electrical connectors back into the new BCM. They are often color-coded or keyed to prevent mistakes.
- Power Up: Reconnect the negative battery terminal.
- Test Functions: Start the vehicle and test all body functions: lights, locks, windows, radio, etc., to confirm the repair was successful.
Important Post-Installation Information
In some cases, additional steps may be required after installation. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible professional scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure correct brake light and stability control operation. This also requires a professional diagnostic tool.
Always consult a factory service manual or a qualified technician if you are unsure about any of these procedures.
Verified Vehicle Compatibility
This Body Control Module is a direct replacement for a wide range of General Motors vehicles. While this listing is for a 2010 Avalanche 1500 BCM, it also fits the models below. Always match your original part number to the list to guarantee compatibility.
This module replaces the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
Partial Fitment List:
- Acadia (2007-2012)
- Avalanche 1500 (2010)
- Caprice (2011-2013)
- Captiva Sport (2012)
- CTS (2008-2013)
- DTS (2006-2011)
- Enclave (2008-2012)
- Equinox (2007-2009)
- Escalade, ESV, EXT (2010)
- Express / Savana Vans (2008-2012)
- G8 (2008-2009)
- Hummer H2 (2008-2009)
- Impala (2006-2013)
- Lucerne (2006-2011)
- Monte Carlo (2006-2007)
- Outlook (2007-2010)
- SRX (2007-2009)
- STS (2010)
- Suburban 1500 (2010)
- Tahoe / Yukon / Yukon XL 1500 (2010)
- Torrent (2007-2009)
- Traverse (2009-2012)
- Vue (2008-2010)
Frequently Asked Questions
What exactly is a BCM cloning service?
Cloning is a process where we extract the unique, vehicle-specific software and security data from your original BCM and transfer it to the replacement module. This makes the new module an exact electronic copy of the old one, eliminating the need for any additional programming after installation.
So I don’t need to take my truck to the dealer after I install this?
That’s correct. Because we have cloned your vehicle’s data, this module is a true plug-and-play solution. You will not need to visit a dealer or mechanic for programming, saving you significant time and money.
Where is the BCM located on my 2010 Avalanche?
On the 2010 Chevrolet Avalanche 1500, the Body Control Module is typically found under the driver’s side dashboard, to the left of the steering column. You may need to remove a lower dash panel to access it.
What do I do with my original module?
After you purchase, you will need to ship your original BCM to us for the cloning service. Once the service is complete, we ship both your original module and the newly programmed replacement back to you. We do not keep your old part.
What if my airbag light is on after installation?
This can happen occasionally. It means the new BCM needs to be electronically ‘introduced’ to the airbag system (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be done by a repair shop with a professional-grade diagnostic tool.