Restore Your Truck’s Electrical Functions with a Reliable BCM
If your 2010 Chevrolet Avalanche 1500 is plagued by bizarre electrical gremlins—like power windows with a mind of their own, flickering interior lights, a security system that won’t cooperate, or even a frustrating no-start condition—the Body Control Module (BCM) is the most likely culprit. As the central nervous system for your truck’s body electronics, a failing BCM can cause a cascade of confusing and inconvenient issues. This isn’t just an annoyance; it can impact safety features and your vehicle’s overall dependability.
This is a direct-fit replacement Body Control Module, arriving at your door fully programmed to your vehicle’s specific VIN. We load it with the latest GM-approved software, ensuring it communicates flawlessly with your truck’s other modules right out of the box. This eliminates the need for an expensive trip to the dealership for programming, saving you both time and money. Simply provide your VIN after purchase, and we handle the rest.
Is Your Avalanche Showing These Classic BCM Failure Signs?
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security or anti-theft system acting up, preventing the engine from starting.
- ✔ Dashboard warning lights appearing for no reason (e.g., ABS, Airbag).
- ✔ Communication error codes, most commonly U0140 (Lost Communication With Body Control Module).
- ✔ A parasitic battery drain that leaves you with a dead battery overnight.
Case Study: The Ghost in the Machine
I remember a 2010 Avalanche that came into my shop with a truly baffling set of symptoms. The owner said his horn would randomly honk, the dome lights would flicker while driving, and sometimes the truck just wouldn’t start. He’d already replaced the battery and checked the alternator. After hooking up my scan tool, I found a dozen communication codes pointing to a network failure. The root cause? A failing 2010 Avalanche 1500 BCM. Internal corrosion on the circuit board was causing intermittent shorts. Installing a VIN-programmed module like this one resolved all the issues in a single afternoon, without a costly diagnostic chase at the dealer.
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.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes to allow all modules to power down completely.
- Locate the BCM: Remove the lower dash panel beneath the steering wheel to gain access. The BCM is a small black box with several large multi-pin electrical connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring they click 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: lights, windows, locks, wipers, etc.
- Perform Relearn Procedures: If your airbag light is on or brake lights aren’t functioning correctly, you may need to perform the post-installation procedures noted below with a capable scan tool.
Post-Installation Notes & Relearns
While this module is programmed for your vehicle, some GM security and safety systems require a final handshake after installation. Depending on your vehicle’s specific configuration, you may need a professional scan tool to perform the following:
- Airbag System Sync: If the airbag light is illuminated, a “Setup SDM Primary Key in BCM” procedure is needed to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: A recalibration of the brake pedal position sensor may be required to ensure correct operation of the brake lights and traction control system.
Disclaimer: Procedures can vary. We always recommend consulting a factory service manual or a qualified technician for guidance.
Verified Vehicle Compatibility List
This module is a direct replacement for part number 25910474 and interchanges with a wide range of other GM part numbers. It is guaranteed to fit the following vehicles (please verify your specific model and options):
ACADIA 07-12 Body Control (BCM); (LH dash)
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
CAPRICE 11-13 Body Control (BCM)
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435, 20921436, or 22860591
CTS 08-13 Body Control (BCM); LH dash
DTS 06-11 Body Control (BCM); (RH center dash)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
ESCALADE/ESV/EXT 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
EQUINOX 07-09 Body Control (BCM); (center dash)
EXPRESS/SAVANA VANS 08-12 Body Control (BCM); (center dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
IMPALA 06-13 Body Control (BCM); (LH dash)
LUCERNE 06-11 Body Control (BCM); (right side dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SRX 07-09 Body Control (BCM); LH dash
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TAHOE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TRAVERSE 09-12 Body Control (BCM); (LH dash)
YUKON/YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
…and more. This BCM replaces part numbers: 10382479, 15093910, 15819552, 20815898, 22860591, 25892622, 25910474, and others.
Frequently Asked Questions
Do I need to send you my old BCM?
No. There is absolutely no core charge for this part. You can keep your original module.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship the module until we have this information to program it correctly.
Is this a plug-and-play part?
For most functions, yes. Because we program it to your VIN, it will control the basic body electronics immediately. However, as noted, certain safety systems like airbags may require a final sync procedure with a professional scan tool.
What tools do I need for installation?
Basic hand tools are all that’s required for the physical installation, such as a socket set and a panel removal tool to avoid scratching your dashboard. A professional bi-directional scan tool may be needed for post-install relearn procedures.
Will this fix my check engine light?
A BCM typically controls body functions, not engine performance. If you have a check engine light, the problem is more likely with the Engine Control Module (ECM) or a powertrain sensor. A BCM failure usually causes communication codes (U-codes) or body-related electrical issues.