Restore Full Electrical Function to Your GM Truck or SUV
Are you battling a frustrating array of electrical gremlins in your vehicle? Intermittent power windows, a malfunctioning security system, or an HVAC system with a mind of its own are common indicators of a failing Body Control Module (BCM). This vital component acts as the central nervous system for your vehicle’s body electronics. When it fails, it can cause widespread and seemingly unrelated issues. This genuine quality GM BCM, interchangeable with part number 15901388, is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a true plug-and-play installation.
From the Diagnostic Bay
We recently had a 2011 GMC Sierra 3500 in the shop with a laundry list of bizarre symptoms. The radio would cut out randomly, the driver’s side power lock was completely dead, and the climate control blower worked only when it wanted to. The owner had already checked fuses and replaced the battery to no avail. A full diagnostic scan revealed multiple communication error codes, all pointing back to one central failure point. Replacing the original BCM with a VIN-programmed unit like this one instantly resolved every single issue. It’s the key to fixing those electrical headaches that don’t seem to make sense.
Is Your Vehicle Showing These BCM Failure Signs?
- ✔ Intermittent or completely non-working power windows, door locks, or mirrors.
- ✔ HVAC and climate controls failing or the blower motor acting erratically.
- ✔ An illuminated airbag warning light, often accompanied by DTC B1001.
- ✔ Security system malfunctions that can lead to no-start or stalling conditions.
- ✔ Exterior or interior lights (headlights, dome lights, etc.) not functioning correctly.
- ✔ A flood of communication-related Diagnostic Trouble Codes (DTCs) stored in the system.
A Direct-Fit Solution for Your 2011 Sierra BCM
Forget the hassle and expense of a dealership visit. We take the complexity out of the repair by programming this module to your vehicle’s specific VIN before it ships. This critical step ensures that the BCM communicates flawlessly with your truck’s other electronic modules, like the ECM and airbag system, right out of the box. Built to strict OEM standards, this module restores the precise factory operation of your vehicle’s accessories and body functions, ensuring long-term reliability.
Installation and Post-Install Procedures
Installation is straightforward for most DIY mechanics. The BCM is typically located under the driver’s side dashboard, near the steering column, and can be swapped out in minutes. However, please be aware of two potential post-installation steps:
- Airbag System Sync: If the airbag warning light remains on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure is required. This syncs the new BCM with the airbag system and must be performed with a professional-grade diagnostic scan tool.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration may be necessary to ensure proper brake light and traction control operation.
There is no core charge for this part, so you can keep your original module without the hassle of returning it.
Frequently Asked Questions
Why is VIN programming so important for a BCM?
VIN programming loads your vehicle’s specific software and configurations onto the module. Without it, the BCM cannot communicate correctly with other computers in your truck, leading to system malfunctions and warning lights. Our pre-programming saves you a mandatory trip to the dealership.
Is this a difficult part to install myself?
The physical installation is very simple, usually involving a few bolts or clips under the dashboard. The only potential difficulty is the need for a high-end scan tool if post-install procedures like the airbag system sync are required.
What should I do if my airbag light is still on after installing the new BCM?
This is a known possibility. You will need to have a technician perform the ‘Setup SDM Primary Key in BCM’ procedure using a compatible diagnostic tool. This re-establishes the security handshake between the BCM and the airbag module.
Will this BCM fit vehicles other than a 2011 Sierra?
Yes, this module is compatible with a wide range of 2007-2013 GM vehicles, including the Silverado, Tahoe, Suburban, Yukon, and Escalade. It interchanges with numerous part numbers like 25844480, 25835966, and 20939137.
Do I need to send my old BCM back?
No. We do not require a core return for this part, which simplifies the process for you. You can dispose of your old module at your convenience.