Restore Control and End Electrical Frustration in Your GM Truck
If you’re dealing with flickering lights, malfunctioning power windows, a temperamental security system, or a vehicle that just won’t start, the Body Control Module (BCM) is often the culprit. As a technician with over two decades of experience, I’ve seen how a failing BCM can turn a reliable truck into a source of constant headaches. This isn’t just a part; it’s the solution to restoring the dependable performance you expect from your vehicle. This replacement 2010 Avalanche Body Control Module arrives programmed with the latest GM software, tailored specifically to your truck’s VIN. You get a reliable fix without the exorbitant cost and hassle of a dealership visit.
A Technician’s Notebook: The Phantom Drain Mystery
A customer brought in his 2010 Avalanche, frustrated with a battery that would die overnight. He’d already replaced the battery and alternator. After connecting my diagnostic scanner, I noticed the BCM wasn’t allowing various accessory circuits to enter ‘sleep mode’ after the ignition was off. It was creating a constant, low-level power drain. Instead of a costly diagnostic marathon, we swapped in a VIN-programmed BCM like this one. The phantom drain vanished, and the truck was back to being 100% reliable. This is a common failure mode I’ve diagnosed hundreds of times, and a properly programmed module is the key to a lasting repair.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your BCM needs attention:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or exterior lights staying on or not working at all.
- ✔ The security system light flashing, or the vehicle refusing to start (anti-theft).
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Dashboard warning lights appearing randomly (e.g., ABS, Airbag, Traction Control).
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0100, U0140, or other ‘U’ codes.
Your Straightforward BCM Installation Guide
Replacing the BCM is a manageable job for a confident DIYer. On the 2010 Avalanche, the BCM is typically located under the driver’s side of the dashboard, near the steering column. Here’s a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- Access the Module: You will likely need to remove the lower dash panel or knee bolster to gain clear access to the old BCM.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed 2010 Avalanche Body Control Module in the same location and reconnect all the electrical harnesses. Ensure they click securely into place.
- Reconnect and Test: Reassemble the dash panels, reconnect the negative battery terminal, and start the vehicle. Test all body functions—lights, locks, windows, radio, etc.
Important Post-Installation Steps
Because this module is pre-programmed, the most difficult part of the job is already done. However, depending on your vehicle’s specific configuration, a couple of final synchronization steps may be needed:
- ✔ Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- ✔ Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure correct brake light operation and traction control functionality. This also typically requires a capable scan tool.
Disclaimer: Procedures can vary. We always recommend consulting a factory service manual or a certified technician for your specific vehicle.
Guaranteed Fitment for Your GM Vehicle
This BCM is a direct replacement for a wide range of GM cars, trucks, and vans. We guarantee compatibility if your original module carries one of the following part numbers:
Interchangeable 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.
This part fits many models including the Tahoe, Suburban, Yukon, Escalade, Impala, Express/Savana vans, and more. Ordering a pre-programmed 2010 Avalanche Body Control Module ensures you get the right component for a successful repair.
Frequently Asked Questions
Frequently Asked Questions
Do I need to program or flash this BCM?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s 17-digit VIN during checkout, and it will arrive ready to install with the latest GM software.
Is there a core charge for my old part?
Absolutely not. There is no core charge, and you do not need to send your old module back to us. Keep it or recycle it at your convenience.
Where is the BCM located on a 2010 Avalanche?
On the 2010 Chevrolet Avalanche, the Body Control Module is typically found under the driver’s side dashboard, attached to a bracket near the steering column.
What if my airbag light is on after I install the new BCM?
This is not a defect. It simply means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). This requires a professional-grade scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Will this fix my no-start problem?
A faulty BCM is a very common cause of no-start conditions related to the anti-theft or security system. While this module is designed to resolve those issues, it’s always best to have a proper diagnosis to confirm the BCM is the root cause before ordering.