Restore Full Electrical Control to Your 2010 Escalade EXT
If your 2010 Cadillac Escalade EXT is plagued by bizarre electrical problems—like power windows with a mind of their own, flickering interior lights, a haywire security system, or intermittent starting issues—a failing Body Control Module (BCM) is the most likely culprit. As the central command center for your truck’s comfort and convenience features, a faulty BCM can turn your luxury vehicle into a source of daily frustration. This isn’t just an annoyance; it can affect vehicle security and safety. This replacement BCM, part number 20815898, is the definitive solution to restore order and reliability.
We take the guesswork and high dealership costs out of the equation. This module isn’t just a part in a box; it comes with our expert cloning service. We transfer the critical data from your original, failing module directly onto this replacement unit. This ensures that your vehicle’s specific configuration, including VIN and security information, is perfectly preserved. The result is a true plug-and-play repair that you can perform right in your own driveway, saving you hundreds in diagnostic and programming fees.
A Technician’s Notebook
I remember a 2010 Escalade EXT that came into my bay with a classic case of BCM failure. The owner was fed up. His remote start worked only half the time, the passenger window was stuck down, and the dash would light up like a Christmas tree randomly while driving. He’d already spent money on a new battery and alternator at another shop, with no success. After a quick scan, I saw a handful of U-codes (communication errors), pointing straight to a network problem. A visual inspection of the BCM under the steering column revealed minor corrosion on the pins—a common issue from moisture exposure. Instead of a costly trip to the dealer for a new module and programming, we used a cloned unit. Within an hour, the truck was back together, all electrical functions were restored, and the customer drove away with a reliable vehicle and a much smaller bill. This is the exact, efficient fix we provide.
Is Your Escalade Showing These BCM Failure Signs?
A failing BCM can cause a wide range of symptoms. If you’re experiencing any of the following, it’s a strong indicator that your 2010 Escalade EXT BCM needs replacement:
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security system randomly triggers or prevents the engine from starting.
- ✔ Remote keyless entry (RKE) is unresponsive or works intermittently.
- ✔ Warning lights on the instrument cluster for systems like ABS, Traction Control, or Airbags.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication, such as U0140, U0155, or other U-codes.
- ✔ Wipers or radio behaving erratically.
Your Straightforward BCM Installation Guide
Thanks to our cloning service, installing your new BCM is a simple swap. No advanced programming tools are needed. Just follow these steps:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On the 2010 Escalade EXT, the Body Control Module is typically located under the driver’s side of the dashboard, near the steering column.
- Disconnect the Old Module: Carefully unplug the electrical connectors from the original BCM. They have locking tabs that need to be depressed to release them.
- Swap the Modules: Remove the mounting screws or clips holding the old BCM in place and install the new module in the same position.
- Reconnect and Secure: Plug the electrical connectors firmly into your new BCM until they click into place. Ensure they are fully seated.
- Final Steps: Reconnect the negative battery terminal. Start the vehicle and test all body functions—windows, locks, lights, wipers, and radio—to confirm the repair was successful.
Post-Installation Procedures
In most cases, our cloning service makes this a seamless swap. However, on some GM vehicles, a couple of quick relearn procedures may be needed. These are simple and ensure all related systems communicate correctly with the new 2010 Escalade EXT BCM.
- Airbag System Sync: If the airbag light is illuminated after installation, a professional scan tool is required to perform the “Setup SDM Primary Key in BCM” function. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor relearn might be necessary. This can also be done with a capable bidirectional scan tool.
Disclaimer: Vehicle systems can vary. For detailed procedures specific to your truck, consulting a factory service manual is always recommended.
Verified Vehicle Compatibility List
This BCM is a direct-fit replacement for a wide range of GM vehicles. Please verify your part number and specific model options. This module is compatible with service 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.
Fits select models including:
ACADIA 07-12, AVALANCHE 1500 10, CAPRICE 11-13, CAPTIVA SPORT 12, CTS 08-13, DTS 06-11, ENCLAVE 08-12, EQUINOX 07-09, ESCALADE / ESV / EXT 10, EXPRESS / SAVANA VANS 08-12, G8 08-09, HUMMER H2 08-09, IMPALA 06-13, LUCERNE 06-11, MONTE CARLO 06-07, OUTLOOK 07-10, SRX 07-09, STS 10, SUBURBAN 1500 10, TAHOE 10, TORRENT 07-09, TRAVERSE 09-12, VUE 08-10, YUKON / YUKON XL 1500 10
Note: Please match your part number or check the fitment list carefully, as options and ID numbers can vary.
Frequently Asked Questions
What exactly does the Body Control Module (BCM) do?
The BCM is a computer that acts as the central hub for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, interior/exterior lighting, wipers, the security system, and the climate control panel. When it fails, these systems can become erratic or stop working altogether.
What is the ‘Cloning Service’ and why is it important?
Our cloning service is a critical step that makes your repair simple. We transfer the unique, vehicle-specific data (like the VIN, mileage, and key security info) from your old BCM to your new one. This makes the module plug-and-play, allowing you to avoid a trip to the dealership for expensive and time-consuming programming.
Do I need any special tools for this installation?
No special tools are required for the physical installation. Basic hand tools like a socket set or screwdriver to access the BCM are all you need. Because we handle the programming via our cloning service, you will not need a dealership-level scan tool for the initial setup.
What do I do with my original BCM?
The cloning process requires your original module. After your purchase, you will send your original BCM to us. We will then clone the data to the replacement unit and ship both modules back to you. You will have your original part returned.
Will this part fix my check engine light?
Generally, no. The BCM controls body functions, while the Engine Control Module (ECM) or Powertrain Control Module (PCM) manages the engine and emissions systems that trigger the check engine light. However, if communication faults (U-codes) from the BCM are affecting other systems, it could indirectly resolve certain warning lights.