Is your GM vehicle suffering from strange and frustrating electrical problems?
The Body Control Module, or BCM, is the central command center for your vehicle’s body electronics. It manages everything from your power windows and locks to the interior lights, security system, and even communicates with other critical modules. When the BCM starts to fail, it can cause a cascade of confusing issues that are often misdiagnosed as wiring faults or individual component failures. This can lead to expensive and unnecessary repairs.
This replacement Body Control Module is the definitive solution for a wide range of GM vehicles, including the 2008-2012 Chevy Express and GMC Savana vans. To ensure a seamless installation, we program the module to your vehicle’s specific VIN before shipping. This process loads the latest GM software updates, ensuring optimal performance and compatibility. No need to pay for expensive dealership programming; this module is prepared for installation right out of the box.
From the Diagnostic Bay
We had a 2011 Savana 3500 work van come in with the strangest complaint: the radio would turn on by itself, the dome lights would flicker randomly, and the power locks worked intermittently. The owner had already replaced the battery and checked all the fuses. We spent an hour tracing wires before connecting our diagnostic tool. We found multiple communication loss codes with the BCM. Instead of continuing the wild goose chase, we swapped in a VIN-programmed BCM. Instantly, every single electrical gremlin vanished. It’s a powerful reminder that a faulty BCM can make a perfectly good vehicle act completely haywire.
Common Symptoms of a Failing GM BCM
- ✔ Erratic or non-functional power windows, mirrors, or door locks.
- ✔ Interior or exterior lights staying on, flickering, or not working at all.
- ✔ The security or anti-theft system light is on, preventing the vehicle from starting.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Inaccurate gauge readings on the instrument cluster.
- ✔ Warning messages like “Service Theft System” or “Service Airbag System”.
- ✔ Complete loss of communication, leading to a no-start condition.
Why Choose Our Programmed 2008-2012 Express BCM?
This isn’t just a replacement part; it’s a comprehensive repair solution. By providing us with your VIN, you receive a module that is perfectly matched to your vehicle’s factory options and configuration. This eliminates the guesswork and the need for additional programming tools, saving you time and money. This module is a direct replacement for a multitude of part numbers, ensuring wide compatibility.
Compatible Part Numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
Post-Installation Information
While this module is programmed for your vehicle, certain systems may require a relearn or synchronization procedure after installation. This is a normal part of the vehicle’s security and safety architecture.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure correct brake light operation and to prevent issues with the traction control system.
Always consult a factory service manual or a qualified technician for vehicle-specific procedures.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that controls most of your vehicle’s non-engine related electronic functions, such as lights, windows, locks, security system, and wipers. It acts as a central hub for these systems.
Is this BCM ready to install when I receive it?
Yes, it is. We pre-program the module using the VIN you provide during checkout. This ensures it’s flashed with the correct software for your vehicle’s specific options, making it ready for installation.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we receive this information to program it correctly.
What if my airbag light comes on after installation?
This is a possibility and is part of the vehicle’s safety protocol. The BCM needs to be synced with the airbag module (SDM). This requires a “Setup SDM Primary Key in BCM” procedure, which must be done with a professional-grade diagnostic tool.
Do I need to send my old BCM back?
No, there is no core charge for this module. You can keep your original part.
Will this part fit vehicles other than the Express 2500 van?
Yes. This BCM is compatible with a very wide range of GM vehicles, including the Acadia, Impala, Tahoe, Yukon, Enclave, and more. Please verify your original part number against our compatible list to ensure proper fitment.