End the Electrical Headaches in Your Chevy Express Van
If you’re a professional tradesperson or a fleet owner, you know that a Chevrolet Express 2500 is the backbone of your business. But when its electronics start failing, your workday can grind to a halt. One minute the A/C works, the next it’s dead. The power locks have a mind of their own, and a mysterious “Security” light on the dash is preventing the engine from starting. These aren’t separate problems; they’re classic symptoms of a failing Body Control Module (BCM). Over my 20 years in diagnostics, I’ve seen how a single faulty BCM can create a cascade of baffling issues. This isn’t just an inconvenience—it’s downtime that costs you money.
This is the definitive, no-hassle solution. This OEM-quality Body Control Module, compatible with part number 15064149, arrives at your door pre-programmed to your van’s specific Vehicle Identification Number (VIN). This means you can skip the expensive trip to the dealership for programming. It’s a direct-fit replacement designed to restore full functionality to your vehicle’s essential systems, getting your workhorse back on the road where it belongs.
A Technician’s Notebook: The Intermittent No-Start
A local contractor brought in his 2006 Express 2500 work van, completely frustrated. The van would randomly refuse to start, showing the security light. He’d already replaced the battery and checked the ignition switch. When I hooked up my professional scanner, it immediately pulled a U0140 – Lost Communication With Body Control Module code. The BCM wasn’t just failing; it was intermittently dropping off the vehicle’s data network, taking the anti-theft system with it. We installed one of our pre-programmed BCMs, and the van fired up instantly. The fix took less than 10 minutes, saving him hundreds in diagnostic fees and dealership programming costs.
Is Your Express Van Showing These Electrical Gremlins?
A failing BCM can manifest in numerous ways. If your van is experiencing any of the following, a faulty BCM is the most likely culprit:
- ✔ Intermittent or non-functional HVAC controls and blower motor.
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ The anti-theft or security system light is on, causing a no-start or crank-no-start condition.
- ✔ Headlights, taillights, or interior dome lights flickering or staying on, draining the battery.
- ✔ An active airbag warning light, often accompanied by DTCs like B1001 (Option Configuration Error).
- ✔ Communication error codes like U0140, U0155, or other U-series codes stored in various modules.
- ✔ Wipers won’t turn on, or won’t turn off.
A Straightforward Guide to Installation
For the Chevy Express and GMC Savana, the BCM is located in the center of the dash, often accessible by removing a lower dash panel. The entire process is simple and can be done with basic hand tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and to help reset the vehicle’s systems.
- Locate the BCM: On the 2004-2007 Express 2500, find the module in the center dash area. It will have several large multi-pin connectors attached to it.
- Swap the Modules: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Unbolt or unclip the old BCM and remove it. Secure the new, pre-programmed BCM in its place.
- Reconnect and Test: Firmly plug all connectors into the new BCM. Reconnect the battery terminal. Start the vehicle and test all functions: lights, locks, windows, wipers, and HVAC system.
- Post-Installation Steps: In some cases, a ‘Setup SDM Primary Key in BCM’ procedure is needed with a bi-directional scan tool to clear an airbag light. A brake pedal position sensor relearn may also be required. These are standard procedures for any professional shop.
Guaranteed Fitment for Your GM Vehicle
While this is the perfect solution for your 2004-2007 Express 2500 BCM, this module is also a direct replacement for a wide range of GM trucks and SUVs. It is interchangeable with part numbers 15116066, 15136225, 10367690, 15064149, and others. It fits models including:
- Chevrolet Express / GMC Savana 1500, 2500, 3500 (2004-2007)
- Chevrolet Silverado / GMC Sierra 1500, 2500, 3500 (2003-2007 Classic)
- Chevrolet Suburban, Tahoe / GMC Yukon, Yukon XL (2003-2006)
- Cadillac Escalade, ESV, EXT (2003-2006)
- Hummer H2 (2003-2007)
Frequently Asked Questions
What exactly does the BCM do on a Chevy Express van?
The Body Control Module acts as the central computer for your van’s body electronics. It controls non-engine related functions like your lights, power windows and locks, security system, wipers, and the HVAC climate control system. When it fails, these systems become unreliable.
Is this BCM really ready to install right out of the box?
Yes. We program the module to the VIN you provide during checkout. This ensures it communicates perfectly with your van’s other computers, like the PCM and SDM (airbag module), without needing a trip to the dealer for expensive programming.
Will this fix my airbag light?
If the airbag light is on due to a BCM communication error (like DTC B1001), this part will resolve the root cause. However, after installation, the airbag system’s memory must be cleared and reset using a ‘Setup SDM Primary Key in BCM’ procedure, which requires a compatible professional scan tool.
Where is the BCM located on a 2006 Express 2500?
On the 2004-2007 Express and Savana vans, the BCM is typically found in the center dash area, behind a lower access panel. This differs from the GM trucks of the same era, where it’s usually under the steering column.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your old module or dispose of it without any hassle.
What if I replace the BCM and still have problems?
While this BCM fixes the vast majority of electrical issues, it’s important to ensure your vehicle’s battery, alternator, and ground connections are in good condition. Our expert support team is also available to help you diagnose any further issues.