Restore Full Functionality to Your GMC Sierra 3500
If you’re dealing with baffling electrical issues in your truck—like intermittent power windows, a dead HVAC blower, or a security light that won’t turn off—you’re not alone. These are classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating problems. This replacement module, part number 15901388, is the definitive solution for your 2007-2011 Sierra 3500 BCM, arriving pre-programmed to your truck’s VIN for a true plug-and-play fix.
Case Study: The Ghost in the Machine
I had a 2009 Sierra 2500 in the bay last month with a laundry list of complaints: the radio would cut out, the driver’s side window worked only when it wanted to, and the airbag light was on with a DTC B1001. The owner had already replaced the battery and checked fuses, but the electrical gremlins persisted. After a quick scan, all signs pointed to the BCM. A poor internal ground within the module was causing communication drops across the network. We installed one of these VIN-programmed units, and in less than 10 minutes, every single issue was resolved. This isn’t just a part; it’s the solution that gets your truck back to being reliable.
Is Your Sierra 3500 Showing These Electrical Gremlins?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s highly likely your module is the culprit. Replacing your 2007-2011 Sierra 3500 BCM can resolve these issues for good.
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or failing to activate.
- ✔ HVAC controls are unresponsive, or the blower motor works intermittently.
- ✔ The anti-theft system malfunctions, causing no-start or stalling conditions.
- ✔ An active airbag warning light, often with a DTC B1001 stored in the system.
- ✔ Unexplained battery drain or other persistent electrical faults.
A Straightforward Guide to Installation
One of the best features of this module is its ease of installation. Because we program it to your VIN before shipping, you can avoid a costly trip to the dealership. Most DIYers can complete this job in under 15 minutes with basic hand tools.
- Safety First: Always disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the BCM: On most GMT900 trucks, the BCM is located under the driver’s side of the 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 module. They have locking tabs that need to be depressed. Once disconnected, unclip or unbolt the old BCM from its mounting bracket.
- Install the New Module: Seat the new BCM into the mounting bracket and securely plug in all electrical connectors. You’ll hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position and test all functions: lights, windows, locks, wipers, and HVAC to confirm the repair.
Note: In some cases, if the airbag light was on due to the old BCM, a ‘Setup SDM Primary Key’ procedure may be needed with a high-level scan tool to clear the light. This syncs the new BCM with the airbag system.
Verified Vehicle Compatibility
This Body Control Module is a direct-fit replacement for a wide range of General Motors trucks and SUVs. While this page focuses on the 2007-2011 Sierra 3500 BCM, it is also compatible with the following vehicles. Always verify your part number (15901388) or one of the interchangeable numbers for a perfect match.
- GMC Sierra 1500, 2500, 3500 & Denali (2007-2013)
- Chevrolet Silverado 1500, 2500, 3500 (2007-2013)
- Chevrolet Avalanche, Suburban, Tahoe (2007-2013)
- GMC Yukon & Yukon XL (2007-2013)
- Cadillac Escalade, ESV, EXT (2007-2013)
This module interchanges with part numbers: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 20939137, 20939138, 22860591.
Frequently Asked Questions
What does VIN programming actually do for me?
VIN programming loads your truck’s specific software and options onto the BCM before it ships. This ensures all features work correctly right out of the box, eliminating the need for expensive dealership programming.
Do I need any special tools for installation?
No, basic hand tools like a socket set or screwdriver are typically all that’s needed to access and replace the module. The installation itself is plug-and-play.
My airbag light is on. Will this fix it?
Yes, a faulty BCM is a very common cause of an airbag light with DTC B1001. Replacing it usually solves the problem. However, you may need a scan tool to perform an ‘SDM Key relearn’ to turn off the light after installation.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module without any hassle or extra fees.
What if I have issues after installation?
Our expert support team is here to help. Additionally, the module is backed by a one-year warranty, giving you peace of mind with your purchase.