Tired of Unpredictable Electrical Problems in Your GM Truck?
If you’re a GMC Sierra or Chevy Silverado owner, you know how much you depend on your truck. But when the Body Control Module (BCM) starts to fail, it can feel like your vehicle has a mind of its own. Flickering lights, a dead instrument cluster, power windows that won’t budge, or a persistent airbag warning light can turn your reliable workhorse into a source of daily frustration. This isn’t just an annoyance; it’s a matter of safety and functionality. This VIN-programmed Body Control Module, compatible with part number 15263497, is the definitive solution to restore order and get your truck’s electronics working flawlessly again.
A Technician’s Notebook: The Case of the Haunted Silverado
A customer brought in his ’11 Silverado 2500 with a list of bizarre symptoms. The radio would cut out, the dome light would stay on, and the scariest part—the airbag light was on with a DTC B1001. He’d already replaced the battery and checked the main grounds. After connecting my scan tool, I saw multiple communication loss codes pointing to the BCM. Instead of sending him to a dealership for a costly replacement and programming, we installed one of our VIN-programmed modules. In under 10 minutes, the electrical chaos was gone. We performed the ‘Setup SDM Primary Key’ procedure to clear the airbag light, and the truck was back to being the reliable machine he needed. This is a classic BCM failure scenario I’ve seen hundreds of times on these GMT900 platforms.
Is Your GM Truck Showing These Electrical Faults?
- ✔ The ‘Service Airbag System’ message is on, often with Diagnostic Trouble Code (DTC) B1001.
- ✔ Power windows, door locks, or interior/exterior lights work intermittently or not at all.
- ✔ HVAC controls are unresponsive, or the blower motor seems possessed.
- ✔ The security system acts up, causing no-start conditions or random alarm triggers.
- ✔ Unexplained battery drain or communication codes (U-codes) with other modules.
A Straightforward Installation Guide for Your GM Truck
Getting your truck back in top shape is easier than you think. This module is designed for a direct-fit replacement. As a technician, I can confirm this is a job most DIYers can handle in their driveway in about 5-10 minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the BCM: On most 2007-2013 GM trucks and SUVs, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black box with several large multi-pin connectors.
- Remove the Old Module: Carefully release the locking tabs on each electrical connector and pull them straight out. The module itself is typically held in place by simple clips or a few small bolts. Remove it from its bracket.
- Install the New BCM: Snap the new, VIN-programmed module into the mounting bracket and firmly reconnect all electrical connectors. You’ll hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all functions: lights, windows, locks, wipers, and the HVAC system.
- Post-Install Checks: If the airbag light remains on, a ‘Setup SDM Primary Key in BCM’ procedure is needed using a bi-directional scan tool. Some models may also require a ‘Brake Pedal Position Relearn’. This ensures all systems are communicating correctly with the new 2013 Sierra 3500 Body Control Module.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15263497 and other interchangeable numbers (see list below). It is guaranteed to fit the following GM models. Please verify your part number before ordering.
Fits Models Including:
CHEVROLET AVALANCHE 1500 (2007-2011)
CHEVROLET SILVERADO 1500/2500/3500 (2007-2013)
GMC SIERRA 1500/2500/3500 & DENALI (2007-2013)
CHEVROLET SUBURBAN 1500/2500 (2007-2011)
CHEVROLET TAHOE (2007-2011)
GMC YUKON & YUKON XL 1500/2500 (2007-2011)
CADILLAC ESCALADE, ESV, EXT (2007-2011)
Frequently Asked Questions About Your New BCM
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we load your vehicle’s specific Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This ensures it communicates perfectly with your truck’s other systems right out of the box, eliminating the need for an expensive trip to the dealership for programming.
Is this a difficult part to install myself?
Not at all. For most people with basic tools, this is a very straightforward repair. It’s typically located under the dash and held in with simple clips or bolts. The entire process often takes less than 15 minutes.
Do I need to return my old BCM? (Core Charge)
No. There is absolutely no core charge for this part. You can keep your old module or dispose of it responsibly without any extra fees or hassle.
My airbag light is on after installing the new module. Is it defective?
No, this is a common security feature in GM vehicles. The new BCM and the airbag’s Sensing and Diagnostic Module (SDM) need to be electronically ‘introduced’. This requires a ‘Setup SDM Primary Key in BCM’ procedure with a professional-grade scan tool. Any local repair shop can perform this for you.
Will this 2013 Sierra 3500 Body Control Module fix my intermittent starting problem?
It very well could. The BCM is a key part of the vehicle’s anti-theft and security system (Passlock/Passkey). If the module is failing, it can prevent the engine from starting or cause it to stall. This part often resolves those issues.