Restore Full Functionality to Your GM Truck
If you’re dealing with baffling electrical issues in your GMC Sierra, Chevrolet Silverado, or another GM truck/SUV, a failing Body Control Module (BCM) is often the culprit. As the central command center for your vehicle’s body electronics, a faulty BCM can cause a cascade of problems, from non-responsive power windows and door locks to a dead HVAC system or a persistent airbag light. This isn’t just an annoyance; it can be a significant safety concern. This OEM-quality replacement BCM, part number 15878753, is the definitive solution to get your truck’s systems communicating correctly again.
We offer this module with a professional Cloning Service. This means we transfer the precise data from your original module to this replacement unit. The result is a true plug-and-play component that requires no expensive trip to the dealership for programming. It arrives ready for installation, loaded with your vehicle’s specific configuration and the latest GM software updates for optimal performance. This service makes the repair process faster, simpler, and more affordable for both DIY mechanics and professional shops.
A Technician’s Notebook: The Misleading Blower Motor
A customer brought in a 2011 Silverado 2500 with an HVAC blower that only worked intermittently. They had already replaced the blower motor and the resistor, but the problem persisted. A quick scan showed no specific HVAC codes, but I noticed a U-code for lost communication with the BCM. Instead of throwing more parts at it, we tested the BCM’s output to the blower motor circuit. Sure enough, the BCM was failing internally, cutting power randomly. A cloned BCM solved the issue in 15 minutes. It’s a classic case where the symptom (blower) isn’t the source of the problem—the BCM was the ghost in the machine all along.
Is Your GM Truck Showing These Electrical Gremlins?
- ✔ The anti-theft or security light is flashing, and the engine won’t start or stalls.
- ✔ Your power windows, door locks, or interior/exterior lights work sporadically or not at all.
- ✔ The HVAC system is unresponsive, or the blower motor seems to have a mind of its own.
- ✔ An airbag warning light is illuminated on the dash, often with a DTC like B1001.
- ✔ You’re seeing a variety of communication or body-related diagnostic trouble codes (DTCs).
- ✔ The radio or instrument cluster flickers or resets unexpectedly.
Your 5-Minute BCM Swap Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On most compatible GM trucks and SUVs, the BCM is located under the driver’s side dash, near the steering column. You may need to remove a lower dash panel for access.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be pressed. Once disconnected, unclip or unbolt the module from its mounting bracket.
- ✔ Install the New Module: Seat the new, cloned BCM into the mounting bracket and securely plug in all the electrical connectors. You should hear a click as they lock into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all body functions—windows, locks, lights, wipers, and HVAC—to confirm the repair.
- ✔ Post-Installation Checks: If the airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Some models may also require a Brake Pedal Position Relearn.
Verified Fitment for Your GM Truck or SUV
This Body Control Module is a direct-fit replacement for a wide range of General Motors vehicles, ensuring seamless integration. It is interchangeable with part numbers: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, and 22860591. It is compatible with many Chevrolet, GMC, and Cadillac models from 2007-2013, including the Silverado, Sierra, Tahoe, Yukon, Suburban, and Escalade. Please verify your part number to ensure compatibility.
After you place your order, you will send us your original Body Control Module. Our technicians will extract the unique vehicle data and transfer it to the replacement module. This ensures all your vehicle’s specific options and security information are retained for a simple, plug-and-play installation. We then ship both your original module and the newly programmed replacement back to you.
No. Our cloning service completely eliminates the need for dealership programming, saving you time and hundreds of dollars in fees.
In some cases, the new BCM needs to be electronically introduced to the airbag system’s computer (SDM). This is done with a professional scan tool using the ‘Setup SDM Primary Key in BCM’ function. This is a simple procedure for most automotive shops if you don’t have the tool yourself.
No, there is no core charge. We require your original module to perform the cloning service, and we always return your original part to you along with the replacement unit.
Poor ground connections are a common cause of BCM failure in GM trucks. Voltage spikes from a bad ground can damage sensitive electronics. Before installing a new module, it’s a wise diagnostic step to check and clean the main body and frame ground points to prevent a repeat failure.