Is Your GM Truck Plagued by Electrical Gremlins?
If your 2007-2013 GM truck or SUV is experiencing bizarre electrical issues like flickering lights, unresponsive power windows, a malfunctioning security system, or erratic HVAC controls, a failing Body Control Module (BCM) is the most likely culprit. The BCM acts as the central nervous system for your vehicle’s body accessories, and when it fails, it can cause a wide range of frustrating problems. This genuine quality GM BCM, part number 25844480, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play installation.
Symptoms of a Failing Body Control Module
- ✔ Unresponsive or intermittently working power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that won’t turn on or off, or behave erratically.
- ✔ HVAC system failure, including a blower motor that won’t run or climate controls that don’t respond.
- ✔ An active airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Vehicle security system faults, causing no-start conditions or random alarm activation.
- ✔ A variety of communication-related DTCs stored in the vehicle’s memory.
The Direct-Fit Solution for your 2011 Sierra BCM
Don’t let a faulty module keep your truck off the road or stuck with annoying electrical faults. This replacement BCM is meticulously prepared to meet or exceed original factory specifications. The most significant benefit is our complimentary VIN programming service. We load the latest GM software and calibrate the module to your truck’s exact VIN before it ships. This eliminates the need for expensive trips to the dealership for programming, making the installation process straightforward and simple. Restore full functionality and confidence in your vehicle’s electronics. This part is a direct replacement for a wide range of part numbers, including 25823559, 25835966, 20939137, and 22860591.
Installation and Post-Install Considerations
Physically replacing the BCM is a simple task, typically taking less than 15 minutes. It’s located under the driver’s side dashboard, near the steering column. However, due to its integration with other vehicle systems, some post-installation procedures may be necessary.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required. This syncs the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM) and must be performed with a professional-grade scan tool.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and to satisfy the traction control system.
Frequently Asked Questions
What does the Body Control Module do on my Sierra?
The BCM is a computer that manages and controls your truck’s non-engine related electronic functions. This includes power windows, door locks, interior/exterior lighting, wipers, the security system, and the HVAC system.
Is this module ready to install when I receive it?
Yes! This BCM is fully pre-programmed to your vehicle’s VIN before shipping. This makes it a plug-and-play installation, with no need for additional dealership programming for most functions.
What happens if I install a BCM that isn’t programmed?
An unprogrammed BCM will not work correctly. Your vehicle may not start, or you will have multiple features that do not function at all because the module doesn’t recognize the specific options your truck is equipped with.
My airbag light is on after installing the new BCM. Is it defective?
No, this is a normal security measure. The new BCM needs to be electronically introduced to the airbag system (SDM). This requires a ‘Setup SDM Primary Key’ procedure using a compatible high-level scan tool.
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 or hassle.