Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your Chevrolet Silverado, GMC Sierra, or Tahoe? Intermittent wipers, flickering lights, unresponsive power windows, or a dead HVAC system are all classic 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 fails, it can cause a cascade of confusing and disruptive problems. This genuine quality GM BCM, interchangeable with part number 25844480 and 25790509, is the definitive solution to restore your vehicle’s essential functions and get you back on the road with confidence.
From the Diagnostic Bay
We had a 2008 Silverado 2500 come in that was driving the owner crazy. The radio would turn on and off by itself, the driver’s side power window worked only when it wanted to, and the AC blower was completely dead. The owner had already replaced the window switch and the blower motor resistor with no luck. After a quick scan, we saw multiple communication loss codes pointing to the BCM. Instead of chasing individual components, we identified the root cause. Installing a VIN-programmed BCM like this one solved all the issues in under 10 minutes. It’s a reminder that when multiple, unrelated electrical systems act up, the BCM should be your first suspect.
Symptoms of a Failing Body Control Module
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) staying on, flickering, or failing to turn on.
- ✔ HVAC and climate control functions becoming unresponsive.
- ✔ Vehicle security system malfunctioning, causing false alarms or starting issues.
- ✔ Airbag warning light illuminated, often with DTC B1001.
- ✔ Wipers behaving unpredictably or not working.
- ✔ A variety of communication-related Diagnostic Trouble Codes (DTCs) stored in the system.
The Plug-and-Play Solution for Your 2007-2011 Silverado BCM
Dealerships can charge a fortune for a new BCM plus the labor and fees for programming. Our modules eliminate that hassle and expense. We pre-program this module to your vehicle’s specific VIN, ensuring it arrives ready for a seamless, plug-and-play installation. This process loads the latest GM software and calibrates the module to your truck’s exact configuration, restoring original performance without any additional steps. Simply locate your old module under the steering column, swap it out, and reconnect the harnesses.
Installation and Post-Install Considerations
Physical installation is straightforward and typically takes less than 15 minutes. However, in some cases, post-installation procedures may be necessary. If the airbag warning light remains on after installation, a technician will need to perform the “Setup SDM Primary Key in BCM” function using a professional scan tool. Additionally, a Brake Pedal Position Relearn might be required to ensure proper brake light and stability control operation. Always check for and repair any poor ground connections, as they are a common cause of premature BCM failure.
This module is a direct replacement for a wide range of part numbers, including: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, and 22860591.
Frequently Asked Questions
Is this BCM ready to install right out of the box?
Yes. We pre-program the module to your vehicle’s VIN before shipping, so it’s ready for a direct, plug-and-play installation with no dealership visit required.
Where is the BCM located on my 2007-2011 Silverado?
The Body Control Module is typically located under the driver’s side dashboard, near the steering column. It is a black box with several large electrical connectors.
My airbag light is on after installing the new BCM. What should I do?
This is a common security measure. 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 will turn off the light.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your old module without any extra fees.
Will this fix my intermittent power window and door lock issues?
If the Body Control Module is the cause of the failure, then yes. A faulty BCM is a very common reason for multiple, unrelated electrical components like windows and locks to malfunction simultaneously. This part is designed to correct those issues.