Restore Your Van’s Electrical System and Get Back to Work
Is your 2008-2012 Express 3500 Van plagued by bizarre electrical issues? Flickering lights, malfunctioning power windows, a security system that won’t cooperate, or gauges that have a mind of their own? As a technician with over two decades of experience, I’ve seen these exact problems hundreds of times. The culprit is almost always a failing Body Control Module (BCM), the central command center for your vehicle’s electronics. When it goes, it can feel like the entire van is possessed, causing downtime and frustration—especially when your van is your livelihood.
This isn’t just a replacement part; it’s a direct solution. We provide a fully tested Body Control Module, part number 15921352, that comes programmed to your van’s specific Vehicle Identification Number (VIN). This critical step ensures that when you receive the module, it’s ready for installation, communicating perfectly with your vehicle’s existing systems. We flash it with the latest GM software updates, so you’re getting a reliable fix that incorporates all factory improvements. Simply provide your VIN after purchase, and we handle the complex programming for you.
From the Diagnostic Bay: The Case of the Erratic Express Van
A contractor brought his 2011 Express 3500 into my shop, completely fed up. His interior dome lights would stay on, draining the battery overnight. The radio would randomly shut off, and the power door locks only worked intermittently. He had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a slew of communication error codes (U-codes) pointing to the BCM. These modules, especially on hardworking vans, are susceptible to failure from heat cycles and voltage spikes. We installed a VIN-programmed BCM just like this one, and within an hour, every single one of his electrical gremlins was gone. He was back on the job site the next day, problem solved.
Common Signs of a Failing Express Van BCM
If you’re experiencing any of the following, a faulty BCM is the likely cause. Replacing it can resolve multiple issues at once.
- ✔ 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 security or anti-theft system preventing the van from starting (often shows a security light on the dash).
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Communication error codes stored, such as U0140, U0155, or other U-codes.
- ✔ The horn honking randomly or not working when pressed.
- ✔ HVAC (heater and A/C) blower motor control issues.
A Straightforward Guide to BCM Installation
For the 2008-2012 Express 3500, the BCM is typically located in the center dash area. While professional installation is always an option, a confident DIYer can handle this job. Always consult a service manual for your specific vehicle’s diagrams and torque specs.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all modules to power down completely.
- Access the Module: Carefully remove the necessary dash panels to gain access to the BCM. On Express vans, this usually involves removing parts of the lower center dash or glove box assembly.
- Disconnect and Remove: Unplug all electrical connectors from the old BCM. They have locking tabs, so be gentle. Once disconnected, unbolt the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely fasten it. Reconnect all electrical connectors, ensuring each one clicks firmly into place.
- Post-Installation Procedures: Reconnect the battery terminal. Start the vehicle and test all functions (lights, windows, locks, radio). In some cases, an airbag light may appear or a brake position relearn may be needed. These require a high-level scan tool to complete the ‘Setup SDM Primary Key in BCM’ or ‘Brake Pedal Position Relearn’ procedures.
Verified Vehicle Compatibility
This Body Control Module is a direct fit for a wide range of GM vehicles and is a replacement for numerous part numbers. Please verify your vehicle is on this list and that your original part number is listed below. The location of the BCM can vary by model.
This module replaces the following 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
Compatible Models Include (but are not limited to):
- Chevrolet Express 1500/2500/3500 Van (2008-2012)
- GMC Savana 1500/2500/3500 Van (2008-2012)
- Chevrolet Impala (2006-2013)
- Chevrolet Tahoe / Suburban 1500 (2010)
- GMC Yukon / Yukon XL 1500 (2010)
- Cadillac Escalade / ESV / EXT (2010)
- GMC Acadia (2007-2012)
- Chevrolet Traverse (2009-2012)
- Buick Enclave (2008-2012)
- …and many other GM models as listed in the original fitment data.
Frequently Asked Questions
Frequently Asked Questions
Do I need to send my old BCM back?
No. There is no core charge for this module. You can keep your original part.