Restore Your Truck’s Electronics with a Plug-and-Play BCM
Are you battling bizarre electrical issues in your GMC Sierra or another GM truck? Flickering lights, a dead HVAC system, or power windows with a mind of their own are classic signs of a failing Body Control Module (BCM). As the electronic nerve center for your vehicle’s comfort and convenience features, a faulty BCM can make driving a frustrating experience. This OEM-quality Body Control Module, equivalent to part number 15926094, is the definitive solution. We pre-program it to your truck’s specific VIN, so it arrives ready for a fast, simple installation without requiring a trip to the dealership.
Is Your Sierra Exhibiting These Electrical Gremlins?
A failing BCM can cause a cascade of seemingly unrelated problems. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ The air conditioning or heater blower only works intermittently or not at all.
- ✔ An airbag warning light is illuminated on the dash, often with a DTC like B1001.
- ✔ Power door locks, windows, or interior/exterior lights behave erratically or have stopped working.
- ✔ The security system acts up, causing no-start conditions or random alarm triggers.
- ✔ Communication errors with other modules, leading to a variety of diagnostic trouble codes.
A Technician’s Notebook: The B1001 Code Mystery
A customer brought in his 2011 Sierra Denali 1500 with the airbag light on. His previous mechanic had replaced the SDM (airbag module), but the light and code B1001 (Option Configuration Error) came right back. From my 20+ years of experience, I know that the BCM and SDM must be in perfect sync. I scanned the BCM and found internal communication faults. The BCM was the real culprit, preventing the new SDM from being recognized. We installed a VIN-programmed 2011 Sierra Denali 1500 BCM, and the B1001 code cleared instantly. It’s a reminder that the problem isn’t always where the code points directly.
Your 5-Minute BCM Installation Guide
Replacing the BCM is a straightforward job that most DIYers can complete in minutes with basic hand tools. This module is designed for a direct-fit replacement.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the BCM: On most GM trucks and SUVs of this era, the BCM is located in the driver’s footwell, typically under the steering column or behind the lower dash panel.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be depressed. Once disconnected, unclip or unbolt the old BCM and remove it.
- Install the New Module: Seat the new, pre-programmed BCM in the mounting location and plug in the electrical connectors until they click securely into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all functions—lights, wipers, locks, windows, and HVAC—to confirm the repair was successful.
Important Post-Installation Note: In some cases, particularly if you had an active airbag code, the airbag light may remain on after installation. This requires a professional scan tool to perform the “Setup SDM Primary Key in BCM” function to re-sync the systems. Additionally, a Brake Pedal Position relearn may be needed on certain models to ensure proper brake light and traction control operation.
Verified Fitment For Your GM Truck or SUV
This module is a direct replacement for part number 15926094 and other interchangeable part numbers, ensuring compatibility with a wide range of vehicles. Please verify your model and year below:
CHEVROLET SILVERADO 1500/2500/3500 (2007-2013)
CHEVROLET SUBURBAN 1500/2500 (2007-2011)
CHEVROLET TAHOE (2007-2011)
GMC SIERRA 1500/2500/3500 (2007-2013)
GMC SIERRA DENALI 1500/2500/3500 (2007-2013)
GMC YUKON & YUKON XL (2007-2011)
CADILLAC ESCALADE, ESV, EXT (2007-2011)
Note: For 2007 models, this fits the ‘new style’ with a smooth door skin. Some 2010 and 2013 models require matching ID 25835966.
Frequently Asked Questions
What does a Body Control Module do?
The BCM acts as the central computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, door locks, interior and exterior lighting, wipers, the security system, and the HVAC climate control system.
Why is VIN programming so important for this part?
VIN programming loads your vehicle’s specific software and options into the BCM. Without it, the module won’t know how to operate your truck’s features correctly, leading to malfunctions or non-functional components. Our service saves you a separate, costly trip to the dealership.
Is this a difficult part for a DIYer to install?
Not at all. The physical installation is very simple, typically taking less than 10 minutes with basic tools as it’s just a few connectors and clips. Because we pre-program it, the complex software side is already handled for you.
What if my airbag light is still on after I install the new BCM?
This can happen. It means the BCM and the SDM (airbag module) need to be electronically re-synced. This is a simple procedure called ‘Setup SDM Primary Key in BCM’ that can be done with a bi-directional scan tool, but it is not something that can be done without one.
Do I need to send my old part back?
No, there is no core charge for this module. You can keep your old part, which saves you the time and hassle of packaging and shipping a core return.