Restore Your Vehicle’s Electrical System
Are you battling a storm of strange electrical issues in your Cadillac Escalade, Chevy Silverado, or GMC Sierra? Flickering lights, unresponsive power windows, a malfunctioning HVAC system, or a persistent airbag light are common signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it malfunctions, it can create frustrating and difficult-to-diagnose problems. This genuine GM-quality Body Control Module, part number 25790509, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play installation.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors stop working or behave erratically.
- ✔ Interior or exterior lights fail to turn on or off, or flicker randomly.
- ✔ The HVAC system is unresponsive, or the blower motor works intermittently.
- ✔ An airbag warning light is illuminated on the dash, often with DTC B1001.
- ✔ The vehicle’s security system malfunctions, preventing the engine from starting.
- ✔ Unexplained battery drain when the vehicle is turned off.
- ✔ Communication errors with other vehicle modules, leading to various warning lights.
Why Choose a VIN-Programmed 2007-2011 Escalade BCM?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We program the module with the latest GM software updates using your vehicle’s VIN. This critical step ensures that the BCM communicates flawlessly with your vehicle’s other computers—like the ECU and TCM—right out of the box. You can bypass the expensive trip to the dealership for programming, saving you time and money.
Installation is straightforward. The BCM is typically located under the driver’s side dashboard, near the steering column. Simply disconnect the negative battery terminal, unplug the electrical connectors from the old module, remove it, and install the new one. Reconnect everything, and you’re done. In some cases, particularly if you had an airbag light, a ‘Setup SDM Primary Key’ procedure may be needed with a high-level scan tool to sync the new BCM with the airbag system. A brake pedal position relearn might also be required for certain models.
This module is a direct replacement for a wide range of part numbers, including: 25844480, 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, and 22860591.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related functions, such as power windows, locks, lights, wipers, security system, and climate controls.
Is this BCM ready to install out of the box?
Yes. We pre-program this module to your vehicle’s VIN before shipping, making it a plug-and-play installation. No further dealership programming is required for most functions.
Where is the BCM located on my 2008 Silverado or 2010 Tahoe?
On most compatible GM trucks and SUVs from this era, the BCM is located under the driver’s side of the dashboard, typically to the left of the steering column.
My airbag light is on after installation. What should I do?
If the airbag light persists, you will need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system and is a necessary security step.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep or dispose of your old module without any hassle.