End the Electrical Gremlins in Your GM Vehicle
Is your Savana, Express, or other GM vehicle acting possessed? Flickering lights, malfunctioning power windows, a security light that won’t turn off, or intermittent starting issues are all classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated problems. Instead of spending a fortune at the dealership, get a reliable, plug-and-play solution right here.
This isn’t just a part; it’s a complete service. We offer a professional Cloning Service for this BCM. Simply send us your original module, and we will transfer all the critical data—including your vehicle’s VIN, security information, and specific options—to this replacement unit. It arrives at your door ready to install, with the latest GM software updates, eliminating the need for expensive dealer programming. This is the most efficient way to get your work van or family SUV back in service.
From the Diagnostic Bay
I remember a 2011 Express 2500 work van that came into the shop with the strangest symptoms. The driver said the radio would randomly change stations, the dome light would stay on, and occasionally the van wouldn’t start, showing a security light. A basic scan tool showed a dozen communication codes, most pointing to a U0140 (Lost Communication With Body Control Module). After verifying power and ground at the BCM connector, we knew the module itself was the culprit. Instead of a costly dealer trip, we used a cloned BCM. The installation took less than an hour, and every single electrical gremlin was gone. The customer was back on the job the same day, saving significant downtime and money.
Is Your Vehicle Showing These Symptoms?
A failing BCM can be tricky to diagnose, but here are the most common signs I’ve seen in my 20+ years of experience. If you’re experiencing several of these, your BCM is the likely cause.
- ✔ Erratic or non-functional power windows, door locks, and interior/exterior lights.
- ✔ The security or anti-theft light stays illuminated, preventing the engine from starting.
- ✔ The horn honks unexpectedly or doesn’t work at all.
- ✔ Wipers operate randomly or at the wrong speed.
- ✔ Communication error codes, such as U0140, U0155, or other “U” codes, are stored in other modules.
- ✔ The instrument cluster displays incorrect information or has flickering warning lights.
The Advantage of Our 2008-2012 Savana 2500 BCM Cloning Service
Choosing our service means you’re getting a straightforward, reliable fix. We handle the complex programming so you don’t have to. By cloning your original module, we ensure that the replacement BCM is a perfect electronic match for your vehicle’s specific configuration. This preserves all original functions, including keyless entry and factory security systems, without any additional programming steps. It’s the ideal solution for both professional mechanics looking for a dependable part and DIY enthusiasts wanting to avoid a trip to the dealership.
A Straightforward Guide to Installation
Replacing the BCM in most of these GM vehicles is a manageable job for a DIYer with basic tools. The location varies slightly by model (check your service manual), but it’s typically found in the center dash or under the steering column.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes for the system to fully discharge.
- Locate the BCM: On Savana/Express vans, it’s usually behind the center dash trim. On SUVs and cars, it’s often to the left of the steering column. Remove any necessary trim panels to gain access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical harnesses. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reinstall any trim panels you removed. Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, locks, windows, radio, etc., to confirm the repair.
Verified Vehicle Compatibility
This BCM is a direct replacement for a wide range of GM vehicles and interchanges with multiple part numbers. Please match your original part number to the list below to ensure compatibility. This module fits part number 25910474 and other numbers listed below.
Interchangeable 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, 25934762, 25934763, 95151084
Fits Models Including:
- GMC Savana / Chevrolet Express Vans (1500, 2500, 3500): 2008-2012
- GMC Acadia / Saturn Outlook / Buick Enclave / Chevrolet Traverse: 2007-2012
- Chevrolet Tahoe / Suburban / Avalanche & GMC Yukon / Yukon XL: 2010 (Verify ID)
- Cadillac Escalade / ESV / EXT: 2010 (Verify ID)
- Chevrolet Impala / Monte Carlo: 2006-2013
- Buick Lucerne / Cadillac DTS: 2006-2011
- And many more. Please use the detailed fitment list to confirm your exact model and year.
Frequently Asked Questions
How does the Cloning Service work?
After you purchase, you will ship your original BCM to us. We use specialized equipment to extract the unique data from your module and flash it onto the replacement unit. This makes the new module an exact electronic copy, ensuring a seamless installation without needing a trip to the dealer for programming.
Why do you need my original module? Can’t you just program it with my VIN?
While VIN programming provides the base software, cloning transfers everything, including immobilizer data, key fob information, and vehicle-specific option configurations. This is the most reliable method to prevent compatibility issues and ensure all features work correctly right out of the box.
Will I get my original BCM back?
Yes. We always return your original module along with the newly programmed replacement unit. We do not keep your old part.
What if my airbag light comes on after installation?
In some cases, the BCM and the airbag system (SDM) need to be re-synced. This is a simple procedure called ‘Setup SDM Primary Key in BCM’ that can be performed by a professional shop with a capable diagnostic tool. It is only necessary if the airbag light is on after the swap.
Are any other procedures required after installation?
Some models may require a Brake Pedal Position sensor relearn to ensure proper brake light and traction control operation. This is a quick procedure that can be done with a pro-level scan tool. Always consult a factory service manual for your specific vehicle’s requirements.
Is this a difficult part for a DIYer to replace?
For most of the listed vehicles, especially the Savana and Express vans, the replacement is straightforward. It typically involves removing a few dash panels and having basic hand tools. The most important part is our cloning service, which handles the difficult programming for you.