Is Your Express Van Plagued with Electrical Gremlins?
If you’re dealing with flickering lights, unresponsive power windows or locks, or strange warning lights on your dash, a failing Body Control Module (BCM) is likely the culprit. The BCM acts as the central nervous system for your van’s electronic accessories, and when it fails, it can cause a wide range of frustrating and unpredictable issues. This replacement Body Control Module, part number 15880684, is the definitive solution to restore full functionality and reliability to your vehicle.
From the Diagnostic Bay
We had a 2011 Express 2500 work van come into the shop that was driving the owner crazy. The dome lights would stay on, the radio would cut out intermittently, and the power door locks had a mind of their own. The driver was worried about the battery dying overnight. After checking the basics, our scan tool showed multiple communication errors pointing to the BCM. We installed a VIN-programmed BCM, and instantly, all the bizarre electrical issues were gone. It’s a perfect example of how this single component can wreak havoc, and how a correctly programmed replacement is the key to a lasting fix.
Guaranteed Compatibility with VIN Programming
Don’t risk installing a generic module that requires expensive dealership programming. We take the guesswork and extra cost out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program the BCM with the latest GM software specific to your 2008-2012 Express 2500 BCM. This ensures a seamless installation and proper communication with your van’s other electronic systems right out of the box.
Common Symptoms of a Failing BCM
- ✔ Power windows, mirrors, or door locks not working or operating erratically.
- ✔ Interior or exterior lights flickering, staying on, or not turning on at all.
- ✔ The vehicle’s security system malfunctioning or preventing the engine from starting.
- ✔ Horn sounding unexpectedly or not working when pressed.
- ✔ Inaccurate gauge readings on the instrument cluster.
- ✔ Multiple warning lights (like ABS or Airbag) illuminated on the dash.
- ✔ Problems with the heating and A/C blower motor controls.
Post-Installation Requirements
While this module is pre-programmed for your vehicle, some GM models may require simple relearn procedures after installation to ensure all systems are properly synced. These may include:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure may be needed. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: To ensure correct brake light and traction control operation, a brake pedal position sensor recalibration might be necessary.
Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic functions, such as power windows, locks, lights, security system, wipers, and climate controls.
Do I need to get this BCM programmed by a dealer?
No. This module comes fully programmed to your vehicle’s specific VIN before we ship it. This saves you time and the high cost of dealership programming.
Is this a plug-and-play part?
For most functions, yes. Because it’s VIN-programmed, it will work upon installation. However, as noted, some vehicles may require additional relearn procedures for systems like the airbags or brake sensor to fully integrate the new module.
What information do you need from me?
We need your 17-digit Vehicle Identification Number (VIN) to program the module correctly. Please provide it during or after checkout to avoid shipping delays.
How can I be sure my BCM is the problem?
The symptoms listed above are strong indicators of a failing BCM. However, for a definitive diagnosis, we always recommend having a professional technician scan the vehicle for fault codes related to the BCM.
Is there a core charge for my old part?
No, there is no core charge for this part. You can keep your original module.