Restore Control Over Your Cadillac’s Electronics
Are you battling bizarre electrical issues in your 2010 Cadillac Escalade EXT? One minute the power windows work, the next they don’t. Maybe the security light is flashing, the radio acts possessed, or worse, the vehicle won’t start at all. As a technician with over two decades of experience, I’ve seen these exact frustrations countless times. The culprit is almost always a failing Body Control Module (BCM), the central computer for your truck’s comfort and convenience features.
Instead of facing a costly trip to the dealership for a new module and expensive programming fees, we offer a straightforward, reliable solution. This is a quality replacement Body Control Module, and the price includes our expert cloning service. We transfer the critical data from your original BCM directly to this replacement unit. The result? A true plug-and-play module that is ready for installation the moment it arrives at your door. No additional programming, no special tools, no hassle.
A Technician’s Notebook: The Case of the Haunted Escalade
I remember a 2010 Escalade EXT rolling into my bay last winter. The owner was at his wit’s end. The interior lights would flicker randomly, the door locks would cycle on their own, and the dash would intermittently display a “Service Theft System” message. He’d already replaced the battery and checked the main grounds. After connecting my scan tool, I found a series of communication codes, most notably a U0140 – Lost Communication With Body Control Module. This pointed directly to a classic BCM failure. By providing a cloned module, we had him back on the road the next day with all systems stable—no dealership visit required. This is the simple, effective fix we provide.
Is Your Escalade Showing These Signs of BCM Failure?
A failing BCM can cause a wide range of confusing symptoms. If you’re experiencing any of the following, a faulty module is the likely cause. This is a common issue we see with the 2010 Escalade EXT BCM.
- ✔ Intermittent or non-functional power windows, door locks, and mirrors.
- ✔ Erratic behavior from the radio, climate control, or interior lighting.
- ✔ Instrument cluster gauges giving false readings or not working at all.
- ✔ A persistent “Service Theft System” or other security-related warnings on the dash.
- ✔ The vehicle fails to start, even with a good battery and starter.
- ✔ Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or B1001.
A Straightforward Guide to Your BCM Installation
Replacing the BCM on your Escalade is a manageable job for a DIYer with basic tools. Our cloning service eliminates the most difficult step—the programming. Here is a general guide for the installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow the systems to fully power down.
- Locate the BCM: On your 2010 Escalade EXT, the Body Control Module is typically located under the driver’s side of the dashboard, near the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket and remove it from the vehicle.
- 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: Reinstall any panels you removed. Reconnect the negative battery terminal. Start the vehicle and test all body functions—windows, locks, lights, radio, etc.—to confirm the repair.
Important Post-Installation Information
While our cloning service makes this a plug-and-play repair, some GM vehicles may require a simple relearn procedure to sync all systems perfectly. Please be aware of the following:
- Airbag System Sync: In some cases, the airbag warning light may illuminate after installation. This is because the new BCM needs to be synced with the airbag’s Supplemental Inflatable Restraint (SIR) module. A professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure to resolve this.
- Brake Pedal Position Relearn: A brake pedal position sensor recalibration may be needed to ensure your brake lights and stability control system function correctly. This is also performed with a professional-grade scan tool.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 20921436 and a wide range of other GM part numbers. It fits the following vehicles, but please verify your part number and specific options to ensure a perfect match.
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 or RH dash (08 only)
DTS 06-11: Body Control (BCM); (RH center dash)
ENCLAVE 08-12: Body Control (BCM); (LH dash)
EQUINOX 07-09: Body Control (BCM); (center dash)
ESCALADE / ESV / EXT 10: Body Control (BCM); (under steering column), ID 20815898 or 25892622
EXPRESS/SAVANA VANS 08-12: Body Control (BCM); (center dash) – Check specific engine/options
G8 08-09: Body Control (BCM); (center dash)
HUMMER H2 08-09: Body Control (BCM); (LH firewall)
IMPALA 06-13: Body Control (BCM); (LH dash) – Check ID for 2013
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
STS 10: Body Control (BCM); center 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
TORRENT 07-09: Body Control (BCM); (center dash)
TRAVERSE 09-12: Body Control (BCM); (LH dash)
VUE 08-10: Body Control (BCM); (center dash)
YUKON / YUKON XL 1500 10: Body Control (BCM); (under steering column), ID 20815898 or 25892622
This module also replaces part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.
Frequently Asked Questions About Our BCM Service
Frequently Asked Questions
How does the cloning service work?
After you place your order, you will ship your original BCM to us. We use specialized equipment to extract the vehicle-specific data (related to your VIN, options, and key programming) and flash it onto the replacement module. This makes the new unit a perfect electronic match for your vehicle.
Do I need to send you my VIN?
While the cloning process is the primary method, providing your VIN is a crucial secondary step. It allows us to double-check for the latest GM software updates and ensure the module we send is 100% correct for your specific vehicle build.
Will I get my original BCM back?
Yes, absolutely. We always return your original module along with the newly programmed replacement unit. We do not keep customer cores.
What if I still have problems after installation?
First, double-check all connector plugs to ensure they are fully seated. If issues persist, consider the post-installation procedures mentioned above, like the Airbag Sync or Brake Pedal Relearn, which may require a professional scan tool. It’s also possible the issue lies with another component on the vehicle’s data network.
Is this a difficult part for a DIYer to install?
For most of the vehicles listed, especially the 2010 Escalade EXT, the BCM is accessible under the dash. With basic hand tools and by following our guide, it is a very manageable job. The cloning service we provide eliminates the need for any computer-based programming, which is the hardest part of the job.