Solve Your Truck’s Electrical Gremlins for Good
If you’re dealing with baffling electrical issues in your 2013 Chevrolet Silverado 3500 or another GM truck, a failing Body Control Module (BCM) is often the culprit. As a technician with over 20 years of experience, I’ve seen these modules cause some of the most frustrating problems imaginable. This BCM, part number 15943678, is your direct, reliable solution. It’s not just a part; it’s a complete fix. We handle the complex part by offering a professional Cloning Service, where we transfer your vehicle’s original data to this replacement unit. The result? A module that is truly plug-and-play, saving you from a costly and time-consuming trip to the dealership.
Is Your GM Truck Showing These Symptoms?
A faulty BCM can manifest in numerous ways. If your vehicle is experiencing any of the following, it’s a strong indicator that your BCM needs attention:
- ✔ Unresponsive or erratic power windows, door locks, or interior/exterior lights.
- ✔ The HVAC system or blower motor works intermittently or not at all.
- ✔ An airbag warning light is illuminated on the dash, often with a DTC like B1001 stored.
- ✔ The vehicle’s security system is malfunctioning, causing no-start conditions or random alarm activation.
- ✔ Strange electrical behavior, such as the radio turning off, gauges acting up, or communication errors with other modules.
A Technician’s Notebook: The Case of the Haunted Sierra
I once had a 2011 GMC Sierra 2500 in the bay that was driving its owner crazy. The radio would shut off randomly, the driver’s side window wouldn’t work on hot days, and the airbag light was on. The owner had already replaced the battery and checked fuses. After hooking up my scanner, I saw a handful of communication codes and the infamous BCM code B1001. Before condemning the module, I did a full ground check—a critical step many people miss. The grounds were solid. We proceeded with a BCM replacement using our cloning service. After a simple 5-minute swap, every single issue was gone. It highlights how this one module can be the root of a dozen seemingly unrelated problems.
A Straightforward Guide to Installation
One of the best features of our cloning service is that it makes the physical replacement incredibly simple for any DIYer or professional mechanic. You can expect to have your truck fully functional in minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the BCM: On most of these GM trucks and SUVs, the BCM is conveniently located under the driver’s side dashboard, near the steering column.
- Swap the Modules: Carefully unplug the electrical connectors from your old BCM and remove it. Install the new, pre-programmed module in its place and securely re-attach the connectors.
- Reconnect Power: Re-attach the negative battery terminal.
- Final Checks: Start the vehicle and test all functions (lights, windows, locks, HVAC). If an airbag light persists, a professional scan tool may be needed to perform the ‘Setup SDM Primary Key in BCM’ function, which syncs the systems. Some models may also require a Brake Pedal Position relearn.
Verified Vehicle Compatibility
AVALANCHE 1500 08-09 Body Control (BCM); (under steering column)
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25835966
AVALANCHE 1500 11 Body Control (BCM)
ESCALADE 07-09 Body Control (BCM); (under steering column)
ESCALADE 10 Body Control (BCM); (under steering column), ID 25835966
ESCALADE 11 Body Control (BCM); (under steering column)
ESCALADE ESV 07-09 Body Control (BCM); (under steering column)
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 25835966
ESCALADE ESV 11 Body Control (BCM); (under steering column)
ESCALADE EXT 07-09 Body Control (BCM); (under steering column)
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25835966
ESCALADE EXT 11 Body Control (BCM); (under steering column)
SIERRA 1500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA 1500 PICKUP 08-09 Body Control (BCM), (under steering column)
SIERRA 1500 PICKUP 10-11 Body Control (BCM); (under steering column)
SIERRA 2500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA 2500 PICKUP 08-11 Body Control (BCM); (under steering column)
SIERRA 2500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SIERRA 3500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA 3500 PICKUP 08-11 Body Control (BCM); (under steering column)
SIERRA 3500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SIERRA DENALI 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA DENALI 08-10 Body Control (BCM); (under steering column)
SIERRA DENALI 1500 11 Body Control (BCM); (under steering column)
SIERRA DENALI 2500 11 Body Control (BCM); (under steering column)
SIERRA DENALI 2500 13 Body Control (BCM); (under steering column), ID 25835966
SIERRA DENALI 3500 11 Body Control (BCM); (under steering column)
SIERRA DENALI 3500 13 Body Control (BCM); (under steering column), ID 25835966
SILVERADO 1500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SILVERADO 1500 PICKUP 08-11 Body Control (BCM); (under steering column)
SILVERADO 2500 PICKUP 07 Body Control (BCM); new style (smooth door skin), under steering column)
SILVERADO 2500 PICKUP 08-11 Body Control (BCM); (under steering column)
SILVERADO 2500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SILVERADO 3500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SILVERADO 3500 PICKUP 08-11 Body Control (BCM); (under steering column)
SILVERADO 3500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SUBURBAN 1500 07-09 Body Control (BCM); (under steering column)
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 25835966
SUBURBAN 1500 11 Body Control (BCM); (under steering column)
SUBURBAN 2500 07-09 Body Control (BCM); (under steering column)
SUBURBAN 2500 10 Body Control (BCM), (under steering column)
SUBURBAN 2500 11 Body Control (BCM); (under steering column)
TAHOE 07-09 Body Control (BCM); (under steering column)
TAHOE 10 Body Control (BCM); (under steering column), ID 25835966
TAHOE 11 Body Control (BCM); (under steering column)
YUKON 07-09 Body Control (BCM); (under steering column)
YUKON 10 Body Control (BCM); (under steering column), ID 25835966
YUKON 11 Body Control (BCM), (under steering column)
YUKON XL 1500 07-09 Body Control (BCM), (under steering column)
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 25835966
YUKON XL 1500 11 Body Control (BCM); (under steering column)
YUKON XL 2500 07-08 Body Control (BCM), (under steering column)
YUKON XL 2500 09-11 Body Control (BCM); (under steering column)
This module also interchanges with part numbers: 25835966, 15263363, 15263497, 15878753, 15284816, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, 22860591.
Frequently Asked Questions
What exactly is the ‘Cloning Service’?
Our Cloning Service is a professional process where we transfer the critical vehicle-specific data (like VIN, options, and security information) from your original, failing BCM directly onto the replacement unit. This makes the new module an exact electronic match for your truck, eliminating the need for any additional programming after installation.
Does this mean I can avoid a trip to the dealership?
Yes, absolutely. Because the module arrives pre-programmed with your vehicle’s data, you will not need to pay for or schedule a programming service at a GM dealership. This saves you significant time and money.
How does the cloning process work? Do I send my part in?
Yes. After you place your order, you will need to send us your original Body Control Module. Our technicians will perform the cloning service and then ship both your original module and the ready-to-install replacement back to you.
My airbag light is on. Will this BCM fix it?
In many cases, a faulty BCM is the cause of an airbag light and codes like B1001. Replacing it will resolve the root cause. However, after installation, you may need a technician with a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light and sync the safety system.
Is there a core charge for this part?
No, there is no core charge. We perform the cloning service and always return your original module to you along with the replacement unit. You are not required to give up your old part.
What kind of warranty is included?
This Body Control Module is backed by our solid one-year warranty, giving you peace of mind that you’re installing a quality, reliable part in your vehicle.