Fix Your Truck’s Electrical Gremlins for Good
If you’re dealing with bizarre electrical issues in your 2007-2013 GM truck or SUV, you’re not alone. From flickering lights to a dead instrument cluster or a security system that leaves you stranded, a failing Body Control Module (BCM) is often the culprit. As the central nervous system for your vehicle’s comfort and convenience features, a faulty BCM can cause a cascade of frustrating problems. This replacement Body Control Module, part number 15940214, is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a true plug-and-play repair.
Case Study: The Ghost in the Dashboard
I had a 2013 GMC Sierra Denali 3500 roll into my bay last month with a list of symptoms that sounded like a poltergeist had taken up residence. The radio would turn on and off, the power locks worked intermittently, and the HVAC blower was completely dead. The owner had already replaced the battery and checked fuses, but the problems persisted. After hooking up my scanner, I saw a handful of communication codes pointing toward the BCM. Instead of a costly trip to the dealer for a new module and programming, we ordered this VIN-programmed unit. The swap took less time than the diagnostic, and instantly, every function was restored. It’s a prime example of how the right part saves hours of headaches and hundreds of dollars in labor and programming fees.
Common Signs of a Failing BCM
A failing BCM can manifest in numerous ways, often mimicking other component failures. If your truck is showing these signs, the BCM is a primary suspect. This is especially true if you see codes like B1001 after a battery replacement or jump-start.
- ✔ Non-functional or erratic power windows, door locks, or interior/exterior lighting.
- ✔ The HVAC system is unresponsive, or the blower motor won’t turn on.
- ✔ An airbag warning light that won’t turn off, often accompanied by DTC B1001.
- ✔ Security system malfunctions, causing no-start conditions or random alarm activation.
- ✔ Unexplained battery drain when the vehicle is off.
- ✔ Communication errors with other modules on the vehicle’s network.
A Straightforward Guide to Installation
One of the best features of this module is its simple installation. Because we handle the programming, you can skip the dealership appointment and get your truck back to 100% in your own driveway.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most GM trucks and SUVs of this era, the BCM is located under the driver’s side dashboard, near the steering column. It’s a black box with several large electrical connectors.
- Swap the Module: Carefully unplug the wiring harnesses from the old BCM. Unclip or unbolt the module from its mounting bracket and remove it. Install the new module in its place and securely reconnect all wiring harnesses.
- Reconnect & Test: Reconnect the negative battery terminal. Start the vehicle and test all functions: lights, wipers, windows, locks, and HVAC to confirm the repair was successful.
- Post-Install Checks: If the airbag light is on, you may need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. Some models may also require a ‘Brake Pedal Position Relearn’ to ensure proper brake light and stability control function.
Will This Fit My Truck?
This Body Control Module is a direct-fit replacement for a wide range of General Motors vehicles and is interchangeable with numerous part numbers, including 25835966, 15926094, and your specific 15940214. Please verify your vehicle is on the list below.
Fits Models:
- Cadillac: Escalade, Escalade ESV, Escalade EXT (2007-2011)
- Chevrolet: Avalanche 1500 (2007-2011), Silverado 1500/2500/3500 (2007-2013), Suburban 1500/2500 (2007-2011), Tahoe (2007-2011)
- GMC: Sierra 1500/2500/3500 & Denali Models (2007-2013), Yukon & Yukon XL (2007-2011)
Note: For 2007 models, this fits the ‘New Body Style’ (smooth door skin) only. Some 2010-2013 models require matching ID 25835966.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. We pre-program the module to your vehicle’s specific VIN before shipping. It arrives ready for installation, saving you time and money.
What if my airbag light is on after installation?
This is a known GM security procedure. If the airbag light is on, a scan tool with advanced functions is needed to perform the ‘Setup SDM Primary Key in BCM’ command. This syncs the new BCM with the airbag system. Most professional repair shops can perform this service.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old part or dispose of it without needing to send it back to us.
What kind of warranty is included?
This module is backed by our one-year, hassle-free warranty, covering any defects in the part itself. We stand by the quality of our programmed electronics.
Will this fix my truck’s stalling or misfire issues?
While a BCM can cause stalling due to security system conflicts, these symptoms are more commonly related to the Engine Control Module (ECM) or fuel/ignition system components. It’s important to perform a full diagnostic to pinpoint the exact cause.