Restore Full Control Over Your Truck’s Electronics
Are you dealing with baffling electrical issues in your GMC Sierra or another GM truck? One moment the radio works, the next it doesn’t. The power locks have a mind of their own, and a persistent airbag light is on your dash. These aren’t random quirks; they’re classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can cause widespread, frustrating problems. This replacement module, interchangeable with part number 15926094, is the definitive solution to restore order and reliability to your vehicle.
This isn’t just a replacement part; it’s a complete, ready-to-install fix. We pre-program each module to your vehicle’s specific VIN, loading it with the latest GM software. This critical step ensures seamless communication between all your truck’s systems, eliminating the need for an expensive trip to the dealership for programming. For any DIY mechanic or professional shop, this means you can solve complex electrical problems right in your own garage or bay with a simple, plug-and-play component.
A Technician’s Notebook
I once had a 2013 Sierra Denali 2500 in the shop with a laundry list of intermittent electrical complaints—flickering dash lights, non-responsive HVAC controls, and a random ‘Service StabiliTrak’ message. The owner had already replaced the battery and checked fuses. After scanning, I found a dozen communication codes pointing everywhere and nowhere. Experience has taught me that before condemning multiple expensive parts, you check the BCM and its grounds. A poor ground connection at the BCM can mimic dozens of other failures. After confirming the BCM was the culprit, installing a pre-programmed unit like this one cleared every single code and restored all functions in under 10 minutes. It’s a reminder that the BCM is the heart of the body’s electrical system.
Is Your Sierra Showing These Symptoms?
- ✔ Unresponsive or erratic power windows, door locks, or interior lights.
- ✔ The security system acts up, causing no-start or stalling conditions.
- ✔ HVAC controls or the blower motor work intermittently or not at all.
- ✔ An airbag warning light is illuminated, often with DTC B1001 (Setup SDM Primary Key in BCM).
- ✔ A cluster of seemingly unrelated Diagnostic Trouble Codes (DTCs) related to body systems.
- ✔ Exterior lights, wipers, or horn function incorrectly.
A Straightforward Guide to Installation
Replacing your 2013 Sierra Denali 2500 BCM is a quick job that most owners can handle with basic tools. It’s designed for a direct fit, getting you back on the road without delay.
- 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, the BCM is located under the driver’s side dashboard, 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 depressed. Once disconnected, remove the bolts or clips holding the module in place.
- Install the New Module: Seat the new, pre-programmed BCM in the mounting bracket and reconnect all electrical connectors firmly until they click.
- Post-Installation Checks: Reconnect the battery. Start the vehicle and test all functions: lights, windows, locks, wipers, and HVAC. In most cases, the job is done. If an airbag light persists, a professional scan tool is needed to perform the ‘Setup SDM Primary Key’ function, which syncs the new BCM to the airbag system.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of General Motors vehicles and is interchangeable with part numbers 25835966, 15263363, 15926094, 25844480, and others. Please verify your part number or contact us to ensure perfect fitment.
AVALANCHE 1500 (2007-2011)
ESCALADE & ESV/EXT (2007-2011)
SIERRA 1500/2500/3500 & DENALI (2007-2013)
SILVERADO 1500/2500/3500 (2007-2013)
SUBURBAN 1500/2500 (2007-2011)
TAHOE (2007-2011)
YUKON & YUKON XL/DENALI (2007-2011)
Note: Some 2007 models require the ‘new style’ (smooth door skin) body type. Some 2010-2013 models may require matching ID 25835966.
Frequently Asked Questions
Is this BCM truly plug-and-play?
Yes! We program it to your vehicle’s VIN before shipping, so it’s ready for installation without requiring any additional programming from a dealership. This saves you time and money.
What if my airbag light is still on after installation?
This can happen. It means the new BCM needs to be electronically introduced to the airbag system (SDM). A mechanic with a bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ function in a few minutes to resolve this.
Do I need to send my old BCM back?
No, there is absolutely no core charge for this part. You can keep your old module without any hassle.
What tools do I need for the installation?
Typically, you’ll only need a basic socket set or screwdriver to remove the lower dash panel and the BCM’s mounting bolts. The entire process usually takes less than 15 minutes.
Will this fix my intermittent starting problem?
If the starting issue is related to the vehicle’s security system (Passlock/Passkey), which is managed by the BCM, then yes, this module is very likely to solve the problem.