Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your 2011 GMC Sierra Denali 1500? Flickering lights, unresponsive power windows, a malfunctioning security system, or a dead HVAC panel are all classic signs of a failing Body Control Module (BCM). The BCM is the central command for your vehicle’s body electronics, and when it fails, it can cause a wide array of perplexing issues. This OEM-quality GM 25844480 BCM is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play installation.
Symptoms of a Failing Body Control Module
- ✔ Unresponsive or erratic power windows, door locks, and interior/exterior lights.
- ✔ HVAC controls not working or blower motor operating intermittently.
- ✔ Illuminated airbag warning light, often with DTC B1001.
- ✔ Security system malfunctions, causing no-start or stalling conditions.
- ✔ Communication errors with other vehicle modules, leading to various DTCs.
- ✔ Wipers behaving erratically or not working at all.
Why Choose Our Pre-Programmed 2011 Sierra Denali BCM?
Getting your truck back to 100% shouldn’t require a costly trip to the dealership. Our service eliminates that step. We program this module with the latest GM software updates using your vehicle’s VIN before it ships. This ensures perfect communication between the BCM and other systems, like the engine computer and airbag module, right out of the box. This replacement for part number 15943678 and others is built to strict OEM standards for lasting performance and reliability. There is no core charge, so you can keep your old part without any hassle.
Simple Installation & Post-Install Notes
Installation is simple for any DIYer. The BCM is typically located under the driver’s side dash, near the steering column. In most cases, you simply disconnect the battery, swap the modules, and reconnect. However, please note that if your original failure included an airbag light, a post-installation ‘Setup SDM Primary Key in BCM’ procedure will be required using a professional scan tool to sync the systems and clear the light. This is a quick procedure for any qualified technician.
Frequently Asked Questions
What does a Body Control Module do on a 2011 GMC Sierra?
The BCM acts as the central computer for your truck’s body electronics. It controls non-engine related functions like power windows, door locks, lights, wipers, the security system, and the HVAC climate control system.
Is this BCM difficult to install?
No, the physical installation is very straightforward. It’s located under the steering column and can typically be swapped in under 10 minutes with basic tools.
Will I need to take my truck to the dealership after installing this?
No. This module comes pre-programmed to your vehicle’s VIN. This eliminates the need for dealership programming, saving you time and money.
What if my airbag light is on after installation?
If the airbag light is on, you will need to have a technician perform the ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool. This syncs the new BCM with your vehicle’s airbag system.
My original part number is 15943678, but this is listed as 25844480. Will it work?
Yes. Part number 25844480 is a direct replacement and is interchangeable with many part numbers, including 15943678. We program it to ensure it functions perfectly in your vehicle.
Is there a core charge for this part?
No, there is no core charge. You are not required to send your old BCM back to us.