Restore Your Van’s Electrical System with a Plug-and-Play BCM
If your 2008-2012 Chevrolet Express 1500 is acting possessed—with flickering lights, erratic power windows, or dashboard warnings that come and go—the Body Control Module (BCM) is the likely culprit. As the central nervous system for your vehicle’s electronics, a failing BCM can turn a reliable workhorse into a source of constant frustration. Instead of paying for expensive diagnostics and dealership programming, our professional cloning service provides a simple, effective, and affordable solution to get your van back in top working order.
This isn’t just a generic, off-the-shelf part. Our service is a precise data transfer from your original module to this fully tested replacement unit. By cloning your van’s specific data, we ensure that all your vehicle’s options, security information, and mileage are preserved. The result is a true plug-and-play module. Once you receive it, you simply install it, and you’re ready to go—no need for a trip to the dealer or the use of a specialized scan tool for programming. It’s the most seamless way to fix complex electrical problems.
A Technician’s Notebook
I once had a 2011 Savana work van in the bay that was driving the owner crazy. The complaint was intermittent no-start and the radio turning on and off by itself. The battery and alternator tested perfectly. Another shop had already replaced the ignition switch to no avail. After hooking up my scanner, I noticed multiple U-codes (communication errors), specifically U0140, pointing to a loss of communication with the BCM. A visual inspection of the BCM connectors showed no corrosion, but a wiggle test of the main harness caused the symptoms to appear. The issue wasn’t the wiring, but internal connection failures on the BCM’s circuit board—a common problem I’ve seen on hundreds of these GM vans. A cloned BCM solved all the issues in under an hour, saving the client from further guesswork and unnecessary parts.
Signs Your BCM is Failing
A faulty BCM can cause a wide range of confusing symptoms. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Intermittent or non-functional power windows, locks, or mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security or anti-theft light is on, preventing the engine from starting.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ The radio or climate controls behave erratically.
- ✔ Diagnostic trouble codes (DTCs) such as U0140, B1001, or other B-series and U-series codes.
- ✔ A parasitic battery drain that kills your battery overnight.
A Straightforward Guide to Installation
Installing your cloned 2008-2012 Express 1500 BCM is a simple process that most DIYers can handle with basic tools. For the Express/Savana vans, the BCM is typically located in the center dash area.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts.
- Access the Module: Carefully remove the necessary dash panels to gain access to the BCM. On these vans, it’s often behind the lower center dash trim or glove box area.
- Disconnect and Remove: 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 the replacement BCM in the same location and securely reconnect all electrical harnesses. You’ll hear a click as they lock into place.
- Reconnect Power: Reattach the negative battery terminal.
- Test Functionality: Start the vehicle and test all body functions—lights, windows, locks, radio, etc.—to confirm the repair is successful.
Post-Installation Checks
Our cloning service eliminates the need for programming, but some vehicle systems may require a simple relearn procedure. Please be aware of the following:
- Airbag System Sync: In some cases, the airbag (SRS) light may illuminate after installation. This requires a ‘Setup SDM Primary Key in BCM’ procedure with a compatible high-level scan tool to sync the modules. This is only necessary if the light is on.
- Brake Pedal Position Relearn: Certain models may need a brake pedal position sensor relearn to ensure proper brake light operation and stability control function.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual for procedures specific to your vehicle’s year and model.
Verified Vehicle Compatibility
This BCM is a direct-fit 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 service is for part number 20935349 and its equivalents.
Compatible Part Numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
This module fits select models including, but not limited to:
- Chevrolet Express 1500/2500/3500 Van (2008-2012)
- GMC Savana 1500/2500/3500 Van (2008-2012)
- Chevrolet Impala (2006-2013)
- GMC Acadia (2007-2012)
- Chevrolet Traverse (2009-2012)
- Buick Enclave (2008-2012)
- Cadillac CTS (2008-2013), DTS (2006-2011), SRX (2007-2009)
- Chevrolet Tahoe / Suburban / Avalanche (2010 – check ID)
- GMC Yukon / Yukon XL (2010 – check ID)
- And many more. Please verify fitment using the list provided in the original data.
Frequently Asked Questions
How does the cloning service work?
After you place your order, you will ship your original BCM to us. We will then transfer all the critical data (VIN, mileage, security keys, options) to the replacement module. We then ship both your original module and the ready-to-install replacement back to you.
Do I need to do any programming after installation?
No. Because we clone your original data, the replacement 2008-2012 Express 1500 BCM is 100% plug-and-play. This saves you a costly trip to the dealership. Some minor relearn procedures, like for the airbag or brake pedal sensor, may be needed in rare cases.
Is this a reliable, long-term fix?
Absolutely. We use high-quality, tested modules and professional data transfer equipment. This service is designed to permanently resolve the common electrical faults caused by a failing BCM and restore your vehicle’s factory functionality.
What happens to my old BCM?
We always return your original module along with the programmed replacement unit. We do not keep your old part, so there is no core charge or deposit required.
How do I know if the BCM is really my problem?
Common symptoms include erratic lights, power locks/windows failing, and communication error codes (U-codes). While these are strong indicators, professional diagnosis is always the best way to be 100% certain. Our service is ideal for those who have already diagnosed a faulty BCM.