Are you battling a storm of electrical gremlins in your GMC Sierra or other GM truck? When your power windows, door locks, interior lights, or HVAC system start acting erratically, a failing Body Control Module (BCM) is often the culprit. This component is the central nervous system for your vehicle’s body electronics, and when it fails, it can cause frustrating and difficult-to-diagnose issues. This OEM-quality BCM, part number 15284816, is the definitive solution, arriving pre-programmed to your truck’s specific Vehicle Identification Number (VIN) for a true plug-and-play repair.
Symptoms of a Failing Sierra 1500 Body Control Module
The BCM manages a wide array of functions, so symptoms can be varied. If you’re experiencing several of the issues below, it’s a strong indicator that your BCM needs replacement. This module is engineered to resolve these exact problems.
- ✔ Unresponsive or erratic power windows, door locks, or mirrors.
- ✔ Interior dome lights or exterior lights staying on or not working at all.
- ✔ HVAC and climate control functions failing, including an inoperative blower motor.
- ✔ An illuminated airbag warning light, often with a DTC B1001 code.
- ✔ Vehicle security system malfunctions, causing no-start or stalling conditions.
- ✔ Intermittent operation of windshield wipers.
- ✔ False warnings on the driver information center (DIC).
This module is a direct replacement for a wide range of GM part numbers, including 25844480, 25835966, 15263363, 15878753, and more, ensuring broad compatibility across the GM truck and SUV lineup from 2007-2013. By providing your VIN at checkout, we load the latest GM software directly to the module, making it ready for installation right out of the box with no expensive dealership programming required.
Frequently Asked Questions
What does a Body Control Module do on a GMC Sierra?
The BCM is a computer that acts as a central hub for your truck’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, security system, and the HVAC system.
Is this BCM difficult to install?
No, installation is straightforward for a DIYer with basic tools. The BCM is typically located under the driver’s side dashboard, near the steering column. It’s held in by a few clips or bolts and has several electrical connectors. The entire process usually takes less than 30 minutes.
Will I need to take my truck to the dealer after installation?
No. This BCM is delivered pre-programmed to your vehicle’s VIN. This eliminates the need for any additional programming or calibration from a dealership, saving you time and money.
What if my airbag light is on after I install the new BCM?
In some cases, an airbag light may appear (DTC B1001). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be done with a professional-grade scan tool. This syncs the new BCM with the airbag system.
Does this part have a core charge?
There is no core charge for this part. You can keep your old module without needing to send it back, making the process hassle-free.
How do I know this is the correct part for my truck?
You can verify the fitment by matching your vehicle’s year, make, and model to the compatibility list on this page. This module replaces numerous part numbers, including 15284816 and 25844480. Providing your VIN at checkout guarantees you receive a correctly programmed part.