Restore Full Electrical Function to Your GM Van or Truck
Are you battling frustrating electrical gremlins in your Chevrolet Express or GMC Savana? Issues like intermittent wipers, unresponsive power locks, a dead HVAC blower, or a persistent airbag light are often signs of a failing Body Control Module (BCM). This vital component acts as the central nervous system for your vehicle’s body electronics. When it fails, it can cause a wide range of confusing and disruptive problems. This replacement BCM, part number 15137394, is the definitive solution for restoring your vehicle’s functionality and peace of mind.
From the Diagnostic Bay
We had a 2006 Express 2500 work van come in with the complaint that the A/C blower motor only worked on high speed. The owner had already replaced the blower motor and the resistor, but the problem persisted. After a quick scan, we saw several communication DTCs pointing to the BCM. Instead of chasing wires for hours, we installed a VIN-programmed BCM. In under 10 minutes, the HVAC controls worked perfectly on all speeds, and the other strange electrical quirks the owner had gotten used to—like a dome light that wouldn’t turn off—were also resolved. It’s a classic case where the central computer, not the individual components, is the root cause.
Diagnosing Your 2004-2007 Express 2500 BCM
A faulty BCM can manifest in numerous ways, often mimicking other part failures. Before you start replacing individual switches and motors, check if your vehicle is exhibiting multiple symptoms from the list below. This is a strong indicator that the BCM is the component that needs attention.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors operate erratically or not at all.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) flicker or fail to work.
- ✔ The HVAC system is unresponsive, or the blower motor is stuck on one speed or doesn’t work.
- ✔ The anti-theft or security system malfunctions, causing no-start conditions.
- ✔ An airbag warning light is illuminated on the dash, often with a B1001 DTC.
- ✔ Wipers behave unpredictably, either not working or not turning off.
- ✔ Multiple, seemingly unrelated diagnostic trouble codes are present.
The Plug-and-Play Solution
Forget expensive dealership visits and programming fees. We simplify the repair process by programming this module to your vehicle’s specific VIN before it ships. This ensures that it integrates seamlessly with your van’s existing systems right out of the box. This pre-programming handles the necessary software and calibrations, making the installation a straightforward, do-it-yourself job for many owners. For a 2004-2007 Express 2500 BCM, this is the most efficient path to a reliable repair.
This module is a direct replacement for a wide range of GM trucks and vans from 2002-2007, and is interchangeable with part numbers 15116066, 15136225, 15136877, 15137393, 15137395, and more. Built to strict OEM standards, it guarantees dependable performance and longevity.
Frequently Asked Questions
What does this Body Control Module do?
The BCM is a computer that manages and controls your vehicle’s body electronics. This includes power windows, locks, interior and exterior lighting, wipers, the security system, and HVAC fan controls.
Is this part difficult to install?
Installation is typically simple and takes less than 15 minutes. In most Express and Savana vans, the BCM is located in the center dash area. Simply disconnect the battery, remove the old module, plug in the new one, and reconnect the battery.
Why is VIN programming so important?
VIN programming loads your vehicle’s specific software and options into the module. This ensures all features work correctly without requiring a trip to the dealership for expensive programming. It makes the part truly plug-and-play.
Will I need any special tools after installation?
In most cases, no. However, if your airbag light remains on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the airbag system. This is not required for all vehicles.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module, which saves you the time and hassle of a return shipment.
How do I confirm this fits my 2004-2007 Express 2500 Van?
This part is confirmed to fit 2004-2007 Express vans with the commercial tradesman package (opt PRP). You can also match your original part number to 15137394 or any of the other interchangeable numbers listed on this page.