Restore Full Control Over Your Truck’s Electronics
Are you dealing with frustrating electrical problems in your GMC or Chevrolet truck? Intermittent wipers, flickering lights, a climate control system with a mind of its own, or power windows that refuse to work are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body accessories, a faulty BCM can make your daily drive a nightmare. This replacement module, equivalent to GM part numbers 15263497 and 25844480, is the definitive solution to restore order and reliability.
We take the guesswork and high dealership costs out of the equation. Each module is expertly programmed to your vehicle’s specific VIN before shipping. This means it arrives ready for a true plug-and-play installation, with no need for expensive dealer tools or programming appointments. Get your 2011 Sierra Denali BCM functions back to factory-perfect operation and put those electrical gremlins in the rearview mirror.
Case Study: The Ghost in the Machine
A customer brought in his 2011 Sierra with a laundry list of bizarre symptoms: the radio would randomly shut off, the dome light would stay on, and the driver’s side window only worked when it wanted to. He’d already replaced the battery and checked fuses. After plugging in my scanner, I saw a dozen communication codes. In my 20+ years of experience, this pattern almost always points to the BCM or a bad ground. We installed a pre-programmed BCM, but I also took an extra five minutes to clean the main BCM ground point under the dash. It was slightly corroded. That combination fixed everything. A new BCM is the core of the repair, but never underestimate the importance of a clean ground connection for long-term reliability.
Diagnosing the Problem: Is Your BCM Failing?
A failing BCM can manifest in numerous ways. If your truck is experiencing any of the following, it’s a strong indicator that your BCM needs replacement:
- ✔ Unresponsive or erratic power windows, door locks, or interior/exterior lights.
- ✔ Climate control (HVAC) that won’t turn on, or a blower motor that works intermittently.
- ✔ An illuminated airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Security system faults, leading to no-start conditions or random stalling.
- ✔ A dashboard that looks like a Christmas tree with multiple warning lights and error messages.
- ✔ Communication errors with other modules on the vehicle’s data network.
Your 5-Minute Path to a Fully Functional Truck
Installation is designed to be simple for both seasoned mechanics and DIY enthusiasts. You can have your truck back to normal in less time than it takes to drink a cup of coffee.
- 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, the BCM is located under the driver’s side dashboard, near the steering column. It’s a black box with several large wiring harnesses connected to it.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. Release the mounting tabs and remove the old module. Snap the new, VIN-programmed module into place.
- Reconnect and Test: Re-attach all wiring harnesses securely to the new BCM. Reconnect the negative battery terminal. Start the vehicle and test all functions: lights, wipers, windows, locks, and HVAC to confirm the repair.
- Post-Install Sync (If Needed): In some cases, an airbag light may remain on. This requires a professional scan tool to perform the “Setup SDM Primary Key in BCM” function to sync the systems.
Verified Fitment For Your GM Truck or SUV
This module is a direct replacement for part number 15263497 and is interchangeable with a wide range of other part numbers, including 25844480, 25835966, 15263363, and more. It is guaranteed to fit the following vehicles:
ESCALADE & ESV & EXT 07-11
SIERRA 1500 PICKUP 07-11
SIERRA 2500 PICKUP 07-11
SIERRA 3500 PICKUP 07-11
SIERRA DENALI (ALL) 07-11
SILVERADO 1500 PICKUP 07-11
SILVERADO 2500 PICKUP 07-11
SILVERADO 3500 PICKUP 07-11
SUBURBAN 1500/2500 07-11
TAHOE 07-11
YUKON & YUKON XL 07-11
Note: For 2012-2013 models with specific part ID numbers, please verify compatibility before ordering.
Frequently Asked Questions
Frequently Asked Questions
Do I need to have this BCM programmed by the dealer?
No. We pre-program the module to your vehicle’s VIN before it ships. It arrives ready for installation, saving you time and money.
Is this a difficult part to install myself?
Not at all. For most DIYers with basic tools, the installation takes less than 15 minutes. It’s located under the driver’s side dash and is easily accessible.
What if my airbag light is still on after installation?
This is a known GM security procedure. If the airbag light persists, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function to sync the new BCM with the airbag system.
Do I need to return my old BCM? Is there a core charge?
No. We do not require you to return your old part, and there is absolutely no core charge, making the process simple and hassle-free.
Will this fix my truck’s no-start problem?
If the no-start issue is caused by the security system (Passlock/VATS) controlled by the BCM, then yes, this replacement will resolve the problem. However, no-start can have many causes, so proper diagnosis is key.
What is the warranty on this part?
This Body Control Module comes with a one-year warranty, giving you peace of mind with your purchase.