Restore Full Functionality to Your GM Vehicle
If you’re dealing with bizarre electrical issues in your 2010 Cadillac Escalade EXT—like power windows with a mind of their own, flickering interior lights, a security system that won’t behave, or a key fob that suddenly stopped working—the culprit is very often a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen these symptoms countless times. The BCM acts as the central nervous system for your vehicle’s comfort and convenience features, and when it starts to fail, it can cause a cascade of frustrating and seemingly unrelated problems.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We take the biggest headache out of the repair process: programming. Simply provide your vehicle’s VIN at checkout, and we will flash this BCM with the latest, most stable GM software specific to your Escalade EXT. This means you can skip the expensive trip to the dealership for programming. You get a part that’s ready for installation and final calibration right out of the box, saving you significant time and money.
From the Diagnostic Bay
A customer brought in his 2010 Yukon—which uses this exact same BCM platform—complaining of ‘ghosts in the machine.’ The dome lights would stay on, the radio would randomly shut off, and sometimes the power locks wouldn’t respond. He’d already replaced the battery and checked fuses. After hooking up my scan tool, I saw a slew of communication error codes pointing straight to a faulty BCM. Once we swapped in a VIN-programmed module like this one, every single one of those electrical gremlins vanished. It’s a common failure, but thankfully, it’s a straightforward fix with the right part.
Is Your Vehicle Showing These Telltale Signs?
A failing BCM can manifest in many ways. If you’re noticing any of the following, it’s a strong indicator that your Body Control Module needs attention:
- ✔ Erratic or non-functional power windows, mirrors, or door locks.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security system or alarm randomly activating.
- ✔ Key fobs that are no longer recognized by the vehicle.
- ✔ Inconsistent or non-working dashboard gauges.
- ✔ A ‘Service Theft System’ or other warning messages on the instrument cluster.
- ✔ In some cases, a no-start condition where the engine cranks but won’t fire up.
Your Straightforward BCM Installation Guide
For the confident DIYer, replacing the BCM is a manageable job. In most GM trucks and SUVs like the Escalade, it’s located under the steering column. Follow these general steps, but always consult a vehicle-specific repair manual for precise instructions.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Remove the lower dash panel beneath the steering wheel to expose the BCM. It’s typically a black plastic box with several large electrical connectors.
- Document Connections: Before unplugging anything, take a clear photo of the connectors. They are often color-coded, but a picture ensures everything goes back in the right place.
- Swap the BCM: Carefully release the locking tabs on each electrical connector and unplug them. Unbolt the old BCM from its mounting bracket and remove it. Install the new, pre-programmed BCM in its place.
- Reconnect Everything: Securely plug all electrical connectors into the new BCM. Reinstall the lower dash panel and reconnect the negative battery terminal.
- Perform Final Procedures: After installation, specific relearn procedures are required. See the critical notes below.
Important Post-Installation Steps
This is a critical part of the process. After installing your new BCM, you must perform the following procedures to ensure all vehicle systems work correctly and safely:
- Airbag System Reset: To clear the airbag warning light, a ‘Setup SDM Primary Key in BCM’ procedure must be completed using a professional-grade diagnostic scan tool. This ensures the new BCM and the airbag system can communicate properly.
- Brake Pedal Position Sensor Relearn: Some vehicles require the Brake Pedal Position (BPP) sensor to be recalibrated after a BCM replacement. This is essential for the proper function of the brake lights, traction control, and stability control systems.
Note: If you are not equipped with a tool capable of performing these functions, assistance from a professional mechanic or qualified shop is required to complete the installation.
Verified Fitment for Your GM Vehicle
This Body Control Module is a direct replacement for a wide range of General Motors vehicles. It is compatible with 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, and 95151084. Please verify your part number or contact us with your VIN to confirm compatibility for models including:
- Cadillac Escalade, ESV, EXT (2010, check ID)
- Chevrolet Avalanche, Suburban, Tahoe (2010, check ID)
- Chevrolet Express & GMC Savana Vans (2008-2012)
- GMC Acadia, Chevrolet Traverse, Buick Enclave (2007-2012)
- Chevrolet Impala (2006-2013)
- Cadillac CTS, DTS, SRX, STS (various years)
- And many more GM models.
Frequently Asked Questions
What exactly does a Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine-related electronic functions, such as power windows, locks, lights, wipers, security system, and key fob operation.
What happens after I place my order?
After you purchase, you will need to send us your vehicle’s 17-digit VIN. We will use this to program the BCM with the correct software and vehicle-specific options before we ship it to you.
Is this BCM difficult to install myself?
The physical replacement is generally straightforward for someone with basic mechanical skills. However, please be aware that post-installation procedures, like resetting the airbag light, require a professional scan tool. If you don’t have one, you will need help from a mechanic to finalize the job.
Why is my airbag light on after installing the new BCM?
This is normal. The new BCM needs to be electronically ‘introduced’ to the vehicle’s Supplemental Restraint System (SRS) or airbag module. This is done via the ‘Setup SDM Primary Key in BCM’ procedure with a proper scan tool, which will then turn the light off.
Will this fix my check engine light?
Generally, no. The BCM controls body electronics, while the Engine Control Module (ECM) or Powertrain Control Module (PCM) manages engine and transmission functions that trigger the check engine light.