Restore Your Truck’s Electrical Functions and Reliability

If you’re dealing with baffling electrical issues in your 2010 Chevrolet Avalanche—like power windows that have a mind of their own, door locks that won’t respond, or a security light that stays on and prevents the engine from starting—you’ve likely found the culprit. The Body Control Module, or BCM, is the central command center for your truck’s body electronics. When it fails, it can create a cascade of frustrating, intermittent problems that are a nightmare to diagnose. This isn’t just an inconvenience; it can affect your vehicle’s security and daily operation.

As a technician with over two decades of experience, I’ve seen firsthand how a failing BCM can make a perfectly good truck feel unreliable. That’s why we offer a straightforward, dependable solution. This Body Control Module is not just a replacement part; it’s a complete fix. We use your vehicle’s VIN to program the module with the very latest GM software before it even leaves our facility. This means it arrives at your door ready for installation, saving you the time, expense, and hassle of a trip to the dealership for programming. You get a reliable part that restores function and peace of mind.

Case Study: A Tricky Diagnosis

I remember a 2010 Tahoe (which uses the same platform as your Avalanche) that came into my shop. The owner was at his wit’s end. The radio would sometimes not turn on, the driver’s side power window worked intermittently, and the alarm would randomly go off. He’d already replaced the battery and checked all the fuses. A scan showed a handful of communication error codes (U-codes). This pattern immediately pointed me to the BCM. After installing a VIN-programmed module like this one, every single one of his electrical gremlins vanished. It’s a common failure, and this is the definitive fix.

Is Your Avalanche Showing These Symptoms?

✔ Power windows or door locks working erratically or not at all.
✔ Interior dome lights or dashboard lights staying on or not turning on.
✔ The security or anti-theft light is illuminated, possibly causing a no-start condition.
✔ Horn sounding unexpectedly or not working when pressed.
✔ Seemingly unrelated warning lights appearing on the dash.
✔ Diagnostic trouble codes (DTCs) related to communication errors (U0140, U0155) or body functions.

A Straightforward Guide to Installation

For the 2010 Avalanche, the BCM is typically located under the driver’s side of the dashboard, near the steering column. While professional installation is always an option, a confident DIYer can handle this job.

Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
Locate the BCM: Remove the lower dash panel beneath the steering wheel to gain access to the module. It’s a black box with 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.
Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, making sure each one clicks into place.
Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, etc.—to confirm proper operation.
Perform Relearns (If Needed): As noted below, some vehicles may require an airbag system sync or a brake pedal position relearn. If you see an airbag light, this procedure will be necessary and requires a professional scan tool.

Post-Installation Procedures & Notes

This module is programmed to be as close to plug-and-play as possible. However, due to the complexity of modern vehicle systems, some models may require additional steps:

Airbag System Sync: If the airbag warning light is on after installation, a procedure called ‘Setup SDM Primary Key in BCM’ must be performed with a compatible high-end diagnostic tool. This syncs the new BCM with the airbag system.
Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be needed to ensure correct brake light and stability control operation.
No Core Charge: You are not required to return your old module. There is no core charge or deposit associated with this purchase.

Will This Fit My Vehicle?

This BCM, part number 15276271, is a direct replacement for a wide range of GM vehicles and supersedes many older part numbers. Please verify your part number or contact us with your VIN to ensure compatibility. It is a confirmed fit for the following:

AVALANCHE 1500 (2010) – Body Control (BCM); (under steering column), ID 25892622
ACADIA (2007-2012) – Body Control (BCM); (LH dash)
CAPRICE (2011-2013) – Body Control (BCM)
CAPTIVA SPORT (2012) – Body Control (BCM); (center dash)
CTS (2008-2013) – Body Control (BCM); LH dash or RH dash
DTS (2006-2011) – Body Control (BCM); (RH center dash)
ENCLAVE (2008-2012) – Body Control (BCM); (LH dash)
EQUINOX (2007-2009) – Body Control (BCM); (center dash)
ESCALADE / ESV / EXT (2010) – Body Control (BCM); (under steering column)
EXPRESS / SAVANA VANS (2008-2012) – Body Control (BCM); (center dash)
G8 (2008-2009) – Body Control (BCM); (center dash)
HUMMER H2 (2008-2009) – Body Control (BCM); (LH firewall)
IMPALA (2006-2013) – Body Control (BCM); (LH dash)
LUCERNE (2006-2011) – Body Control (BCM); (right side dash)
MONTE CARLO (2006-2007) – Body Control (BCM); (LH steering column)
OUTLOOK (2007-2010) – Body Control (BCM); (center dash)
SRX (2007-2009) – Body Control (BCM); LH dash
STS (2010) – Body Control (BCM); center dash
SUBURBAN 1500 (2010) – Body Control (BCM); (under steering column)
TAHOE (2010) – Body Control (BCM); (under steering column)
TORRENT (2007-2009) – Body Control (BCM); (center dash)
TRAVERSE (2009-2012) – Body Control (BCM); (LH dash)
VUE (2008-2010) – Body Control (BCM); (center dash)
YUKON / YUKON XL 1500 (2010) – Body Control (BCM); (under steering column)

This module replaces 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.