Restore Full Electrical Function to Your Truck
Are you battling frustrating electrical gremlins in your 2007-2013 GM truck or SUV? Flickering lights, unresponsive power windows, a dead HVAC system, or a security light that won’t turn off are all classic signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a cascade of confusing and seemingly unrelated issues. If you’re tired of chasing symptoms, a faulty 2011 Sierra Body Control Module is often the root cause. This genuine OEM-quality replacement, part number 15284816 (interchangeable with 25844480 and others), is the definitive solution to restore your vehicle’s performance and reliability.
We had a 2011 Silverado in the shop that was driving the owner crazy. The dome lights would stay on intermittently, draining the battery overnight. He had already replaced the battery and alternator, but the problem persisted. After hooking up the scanner, we saw a handful of communication codes pointing toward the BCM. Instead of a complex wiring issue, the internal circuits of the original module were failing. We installed a VIN-programmed BCM, and the ghost electrical draws vanished. It’s a reminder that sometimes the most complex-seeming problems have a straightforward, central cause.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights staying on, flickering, or failing to activate.
- ✔ HVAC controls are unresponsive, or the blower motor operates erratically.
- ✔ Vehicle security system malfunctions, causing no-start conditions or false alarms.
- ✔ The airbag warning light is illuminated, often with a DTC B1001 stored.
- ✔ A variety of seemingly random diagnostic trouble codes related to body systems.
Plug-and-Play Solution for Your 2011 Sierra Body Control Module
The biggest hurdle in replacing a BCM has always been the need for expensive programming at a dealership. We eliminate that step entirely. Simply provide your vehicle’s VIN during checkout, and we will program the module with the latest GM software updates specific to your truck. This ensures that all systems communicate correctly right out of the box. This isn’t just a convenience; it’s essential for proper function of the anti-theft system, airbag module, and other integrated electronics. This replacement is the definitive fix for your 2011 Sierra Body Control Module problems, getting you back on the road without the dealership hassle.
Installation and Post-Install Notes
Installation is typically a quick process, often taking less than 15 minutes. The BCM is located under the driver’s side dash, near the steering column. While the module is plug-and-play, some vehicles may require a couple of simple relearn procedures:
- Airbag System Sync: If the airbag light remains on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool and syncs the new BCM with the airbag’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor relearn may be necessary to ensure correct brake light operation and traction control function.
This module comes with a one-year warranty and requires no core charge, so you can keep your old part without any hassle.
Wide Compatibility and Interchange Part Numbers
This BCM is a direct replacement for a wide range of GM trucks and SUVs from 2007 to 2013, including the Chevrolet Avalanche, Silverado, Suburban, Tahoe; GMC Sierra, Yukon; and Cadillac Escalade. It is fully interchangeable with the following part numbers: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, 22860591.
Frequently Asked Questions
What does a Body Control Module do on a 2011 GMC Sierra?
The BCM is a computer that manages and controls most of your truck’s non-engine related electronic systems. This includes power windows, door locks, the security system, interior and exterior lighting, wipers, and the HVAC climate control system.
Is this BCM ready to install out of the box?
Yes! This module is pre-programmed to your vehicle’s specific VIN before shipping. This makes the installation plug-and-play and avoids the need for a costly trip to the dealership for programming.
Why is my airbag light on after installing the new BCM?
The BCM and the airbag module (SDM) are linked for security. If the light is on, it means they need to be electronically ‘introduced.’ This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure, which syncs the two modules.
Where is the BCM located on my truck?
On most 2007-2013 GM trucks and SUVs, including the Sierra, the BCM is located under the driver’s side dashboard, typically to the left of the steering column.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your old module without any extra fees or hassle.