Restore Full Electrical Function to Your GM Truck or SUV
If your Cadillac Escalade, Chevrolet Silverado, or GMC Sierra is plagued by strange electrical issues, a failing Body Control Module (BCM) is the most likely culprit. The BCM acts as the central nervous system for your vehicle’s body electronics, managing everything from your power windows and door locks to the HVAC system and interior lights. When it fails, it can cause a cascade of frustrating and seemingly unrelated problems. This genuine quality GM BCM, part number 25844479, is the definitive solution, 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 operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) failing to work correctly.
- ✔ HVAC system issues, such as the blower motor not working or temperature controls being unresponsive.
- ✔ The security system malfunctioning, causing no-start conditions or false alarms.
- ✔ An active airbag warning light, often with a DTC B1001 code stored.
- ✔ Intermittent stalling, misfires, or other performance issues tied to electrical communication failures.
Why Our VIN-Programmed 2007-2011 Escalade EXT BCM is the Superior Choice
Don’t settle for a generic module that requires an expensive trip to the dealership for programming. We handle the critical software setup for you. By providing your vehicle’s VIN at checkout, we flash the module with the latest GM software specific to your truck’s options and configuration. This ensures that all systems communicate correctly right out of the box, saving you time, money, and diagnostic headaches. This module is a direct replacement for a wide range of part numbers, including 25835966, 15943678, 20939137, and 22860591, among others.
Installation and Post-Install Considerations
Installation is straightforward for the average DIY mechanic. The BCM is typically located under the driver’s side dashboard, near the steering column. The physical swap takes only a few minutes. However, be aware of potential post-installation procedures:
- Airbag System Sync: If the airbag warning light remains on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade scan tool and syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure proper brake light and traction control functionality.
With our no-core-charge policy, you can simply keep your old part without the hassle of returning it. This replacement 2007-2011 Escalade EXT BCM is your key to resolving persistent electrical problems and restoring your vehicle’s reliability and functionality.
Frequently Asked Questions
Is this BCM ready to install out of the box?
Yes! This Body Control Module comes pre-programmed to your vehicle’s VIN. This ensures it works with your specific features and options without needing a trip to the dealership for programming.
Where is the BCM located on my 2008 Silverado or 2009 Tahoe?
On most compatible GM trucks and SUVs from this era, the BCM is located under the driver’s side of the dashboard, typically near the steering column or integrated into the junction block.
What if my airbag light is on after installation?
If the airbag light is on, it means the new BCM needs to be electronically synced with the vehicle’s Sensing and Diagnostic Module (SDM). This is done via a ‘Setup SDM Primary Key in BCM’ procedure, which requires a professional diagnostic scan tool.
Do I need to return my old BCM?
No, there is absolutely no core charge for this part. You can keep your old module without any obligation or extra fees.
Will this part fix my intermittent HVAC blower?
A faulty BCM is a very common cause of intermittent or non-functional HVAC controls and blower motor operation in these vehicles. While you should always confirm your diagnosis, replacing the BCM often resolves these specific issues.