Is Your Tahoe Plagued by Electrical Gremlins?
If you’re dealing with bizarre and frustrating electrical issues in your 2007-2011 Chevrolet Tahoe, GMC Yukon, or other compatible GM vehicle, a failing Body Control Module (BCM) is the most likely culprit. This module acts as the central nervous system for your vehicle’s body electronics, and when it starts to fail, it can cause a cascade of seemingly unrelated problems. This genuine OEM-quality BCM, part number 22860591, is the definitive solution to restore full functionality and peace of mind.
From the Diagnostic Bay
We recently had a 2009 Tahoe in the shop that was a real head-scratcher for the owner. The dome lights wouldn’t turn off, the driver’s side power window worked only when it wanted to, and the security light would flash intermittently, preventing the truck from starting. After confirming the battery and grounds were solid, all diagnostic paths led to the BCM. We installed this exact VIN-programmed module, and in less than 10 minutes, every single issue was resolved. The owner was thrilled to have his reliable truck back without a costly trip to the dealership.
Symptoms of a Failing GM Body Control Module
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, dome lights) staying on or not turning on.
- ✔ HVAC and climate control functions are unresponsive or behave unpredictably.
- ✔ Vehicle security system malfunctions, causing no-start conditions or false alarms.
- ✔ The airbag warning light is illuminated on the dash, often with DTC B1001.
- ✔ Wipers activating on their own or not working when switched on.
- ✔ A cluster of seemingly random diagnostic trouble codes (DTCs) related to communication and body circuits.
The Plug-and-Play Solution for Your Tahoe Body Control Module
Don’t let a faulty BCM keep your truck or SUV sidelined. This module is expertly pre-programmed to your vehicle’s specific VIN, ensuring it works seamlessly right out of the box. This critical step bypasses the need for expensive dealership programming or specialized scan tools for the initial setup. Built to strict OEM standards, it guarantees the same performance and longevity as the original part. With a straightforward installation process and no core charge, you can get your vehicle back to 100% quickly and affordably.
This module is a direct replacement for a wide range of part numbers, including: 25844480, 25835966, 15263363, 15878753, 15943678, 25790508, 25835965, 20939137, and more.
Installation and Post-Install Notes
Installation is simple for the average DIYer. The BCM is typically located under the driver’s side dash, 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. However, please note the following potential post-installation procedures:
- Airbag System Sync: If the airbag warning light is on after installation, a procedure called “Setup SDM Primary Key in BCM” must be performed with a professional-grade scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure proper brake light and traction control operation.
Frequently Asked Questions
What does a Body Control Module do on a Chevy Tahoe?
The BCM is a computer that controls and monitors most of the non-engine related electronic functions in your Tahoe. This includes power windows, door locks, the security system, interior and exterior lighting, wipers, and the HVAC system.
Is this part difficult to install?
No, the physical installation is very straightforward. It’s usually located under the dashboard and held in by clips or a few bolts. The entire process typically takes less than 15 minutes. No special tools are needed for the physical swap.
Will I need to go to the dealership after installing this BCM?
No. This module comes pre-programmed to your vehicle’s VIN. This means you can install it yourself and it will function immediately without requiring any additional programming from a dealer.
What if my airbag light is on after I install the new BCM?
If the airbag light appears, it means the new BCM needs to be synced with the vehicle’s Sensing and Diagnostic Module (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ function. This is a simple procedure for any qualified repair shop.
Is there a core charge for this part?
No, there is no core charge. You are not required to send your old, faulty module back to us, saving you time and hassle.