Is Your 2010 Escalade EXT Acting Possessed?
As a technician with over two decades of experience, I’ve seen it all. A customer’s 2010 Cadillac Escalade EXT came into my shop last week with a list of bizarre symptoms: the dome lights would flicker, the power locks would cycle on their own, and worst of all, a parasitic battery drain left him stranded twice. He’d already replaced the battery and alternator. The real culprit? A failing Body Control Module (BCM). The BCM is the electronic brain for your truck’s body accessories, and when it fails, it creates frustrating and hard-to-diagnose electrical gremlins.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine GM-spec BCM and flash it with the very latest official software, programmed specifically to your Escalade’s Vehicle Identification Number (VIN). This ensures every feature your truck left the factory with works perfectly, right out of the box.
Common Symptoms of a Failing 2010 Escalade EXT BCM:
- โ Unexplained battery drain that kills your battery overnight.
- โ Power windows, door locks, or mirrors working intermittently or not at all.
- โ Interior or exterior lights flickering, staying on, or not turning on.
- โ The vehicle’s security system preventing the engine from starting.
- โ False warning messages on the driver information center (DIC).
- โ Horn honking randomly or not working when pressed.
Expert Pro Tip from the Shop Floor
Before installing your new BCM, take a moment to inspect the connector pins on the vehicle’s wiring harness. I’ve seen cases where a slightly corroded or bent pin was the root cause of the original failure. Cleaning them with a quality electronics cleaner and ensuring they are straight can prevent communication errors and protect your new module from damage.
Simple Installation Process
Replacing the BCM on your Escalade EXT is a straightforward job that you can do in your own garage. Our pre-programmed module means you can skip the expensive trip to the dealership for programming.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the BCM: On your 2010 Escalade EXT, the BCM is found under the driver’s side dashboard, near the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unclip the multiple wiring harnesses from the old BCM. The connectors have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, VIN-programmed BCM in the same location. Securely plug in all the wiring harnesses, ensuring each one clicks firmly into place.
- Power Up: Reconnect the negative battery terminal. Your vehicle is now ready for the final steps.
Important Post-Installation Procedures
To ensure full functionality and safety, a couple of final steps are required after installation. These procedures sync the new BCM with other critical systems in your vehicle and require a bi-directional scan tool.
- Airbag System Reset: The airbag warning light will be on after replacement. You must perform the ‘Setup SDM Primary Key in BCM’ procedure with a compatible diagnostic tool to re-establish communication and clear the light.
- Brake Pedal Position Sensor Relearn: Some vehicles require a recalibration of the brake pedal position sensor. This is vital for the proper operation of the stability control and anti-lock brake systems.
Guaranteed Compatibility
This BCM, part number 25847588, is a direct replacement for a wide range of original part numbers. If your old module has any of the following numbers on it, this unit is the correct fit for your vehicle:
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 module also fits a wide variety of other GM trucks, vans, and SUVs from this era. Please check the fitment list to confirm compatibility with your specific vehicle.