Restore Full Functionality to Your 2008-2012 Express 3500 BCM
If your Chevy Express or GMC Savana is plagued by baffling electrical problems—like erratic gauges, non-working power windows, intermittent starting, or warning lights that come and go—a failing Body Control Module (BCM) is the likely culprit. As the central nervous system for your vehicle’s body electronics, a faulty BCM can make your reliable workhorse feel unpredictable and unsafe. This isn’t just an inconvenience; it’s a critical failure that can leave you stranded. This replacement BCM, part number 25826124, is the definitive solution to restore order and get your van operating as it should.
We take the guesswork and high costs out of the repair with our professional cloning service. Instead of paying for expensive dealership programming and key relearns, you simply send us your original BCM. We extract the unique data that’s specific to your van—including key codes, security information, and optional feature settings—and transfer it directly to this replacement unit. We also flash it with the latest GM software updates for improved performance and stability. The result is a true plug-and-play module that arrives ready for installation, with your original module returned to you. It’s the most seamless and cost-effective way to fix your 2008-2012 Express 3500 BCM.
Case Study: The Ghost in the Van
A local contractor brought in his 2011 Express 3500 work van with a list of symptoms that sounded like a poltergeist infestation. The radio would switch off, the dome light would flicker, and occasionally, the van wouldn’t start, only to fire up perfectly an hour later. He’d already replaced the battery and alternator. After hooking up my scan tool, I saw a flurry of U-codes (communication loss) pointing to the BCM. These modules, often located in the center dash area on Express vans, are susceptible to voltage spikes and internal circuit board failure over time. By installing a pre-programmed BCM like this one, we had his van’s electronics stabilized and him back on the job site the same day, saving him from a costly, multi-day stay at the dealership.
Is Your GM Vehicle Showing These Signs?
- ✔ Power windows, door locks, or interior lights not working or acting erratically.
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ Dashboard gauges (speedometer, tachometer) behaving strangely or not working at all.
- ✔ Communication error codes, such as U0100, U0140, or other U-series faults.
- ✔ The horn honks unexpectedly or the panic alarm goes off randomly.
- ✔ Issues with the heating and A/C blower motor controls.
- ✔ The vehicle fails to recognize the key fob.
Your Step-by-Step BCM Replacement Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work. This prevents accidental shorts and protects the vehicle’s sensitive electronics.
- ✔ Locate the BCM: On most 2008-2012 Express and Savana vans, the BCM is located behind the center dash panel, often near the radio or climate controls. You will need to remove some trim panels to gain access.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed to release them. Once disconnected, unbolt or unclip the module from its mounting bracket and remove it from the vehicle.
- ✔ Install the New Module: Mount your new, pre-programmed BCM into the bracket and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- ✔ Reconnect Power: Re-attach the negative battery terminal and tighten it securely.
- ✔ Test and Verify: Start the vehicle and test all body functions: power windows, locks, radio, lights, and wipers. Because this module is cloned from your original, it should work immediately without any further programming.
Important Post-Installation Information
While our cloning service makes this a nearly plug-and-play repair, some GM vehicles require a final handshake between modules. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag (SRS) warning light is illuminated after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure may be needed. This requires a professional bi-directional scan tool and syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be necessary to ensure correct brake light operation and to keep the traction control system happy. This is also performed with a scan tool.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual for procedures specific to your exact make and model.
Verified Fitment Across Multiple GM Models
This BCM is a direct replacement for a wide range of GM cars, trucks, and SUVs. It is compatible with 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. Please check the list below to confirm your vehicle’s compatibility.
EXPRESS 1500/2500/3500 VAN 08-12
SAVANA 1500/2500/3500 VAN 08-12
IMPALA 06-13
ACADIA 07-12
MONTE CARLO 06-07
TAHOE 10
TRAVERSE 09-12
YUKON / YUKON XL 1500 10
CAPTIVA SPORT 12
DTS 06-11
OUTLOOK 07-10
SUBURBAN 1500 10
ESCALADE / ESV / EXT 10
STS 10
TORRENT 07-09
CTS 08-13
G8 08-09
AVALANCHE 1500 10
LUCERNE 06-11
SRX 07-09
HUMMER H2 08-09
VUE 08-10
CAPRICE 11-13
ENCLAVE 08-12
Frequently Asked Questions
How does the cloning service work?
After you purchase, we’ll provide instructions for sending us your original BCM. We then use specialized equipment to read the vital data (like VIN, mileage, and key information) from your old module and program it into the new one. This ensures perfect compatibility and means you won’t need a trip to the dealer for programming.
Do I need to send my keys?
No. Because we are cloning the security information directly from your original BCM, the replacement module will recognize your existing keys automatically. This is a major benefit of our service.
Will this fix my specific problem?
This module corrects faults originating within the BCM itself. While the symptoms listed are very common for BCM failure, it’s always best practice to have a professional diagnosis performed to rule out other issues like wiring or sensor faults before ordering.
What happens to my old BCM?
Our cloning service is designed for your convenience. We do not keep your original module. It is always returned to you along with your newly programmed replacement unit.
Is this a difficult part to install for a DIYer?
For someone with basic mechanical skills, this is a very manageable job. The main challenge is typically accessing the module, which may require removing some dash trim panels. Since our module is pre-programmed, the electrical part of the job is simple plug-and-play.