Are you battling frustrating electrical issues in your GM truck or SUV? A faulty Body Control Module (BCM) is often the culprit behind problems like erratic lights, malfunctioning power windows, a dead HVAC system, or persistent security warnings. This genuine GM BCM, part number 15263363 (interchangeable with 25844480 and others), is the definitive solution for a wide range of 2007-2013 General Motors vehicles, including the GMC Sierra, Chevrolet Silverado, Tahoe, and Cadillac Escalade. We pre-program this module to your vehicle’s specific VIN, ensuring a seamless, plug-and-play installation without requiring a costly trip to the dealership for programming.
From the Diagnostic Bay
We had a 2013 GMC Sierra 1500 in the shop that was driving its owner crazy. The radio would cut out, the dome lights would flicker, and the power locks worked only when they wanted to. The owner had already replaced the battery and checked the main grounds. After hooking up our scanner, we saw a handful of communication codes all pointing back to the BCM. Instead of a complex wiring repair, the fix was a new, VIN-programmed 2013 Sierra Body Control Module. Within 15 minutes of installation, all the strange electrical gremlins were gone. The key was the pre-programming; it saved the customer hundreds in dealership labor and got his truck back to normal fast.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors operate intermittently or not at all.
- ✔ Interior or exterior lights flicker, stay on, or fail to turn on.
- ✔ The vehicle’s security system malfunctions, preventing the engine from starting.
- ✔ HVAC controls are unresponsive, or the blower motor works sporadically.
- ✔ The airbag warning light is illuminated, often with DTC B1001.
- ✔ Unexplained battery drain when the vehicle is off.
- ✔ Various communication-related Diagnostic Trouble Codes (DTCs) are stored.
Solving Electrical Issues with a 2013 Sierra Body Control Module
This module acts as the central hub for your truck’s body electronics. By replacing a failing unit with our VIN-programmed BCM, you restore the critical communication pathways between switches, sensors, and accessories. This not only fixes the obvious symptoms but also enhances the overall reliability and security of your vehicle, preventing future electrical failures. Our programming uses the latest GM software updates, so you can be confident in its performance and compatibility.
Key Features & Benefits
- ✔ VIN Programmed for Your Truck: Arrives ready for installation with no additional programming needed. Just plug it in and restore functionality.
- ✔ Restores Full Functionality: Corrects issues with lighting, power accessories, security systems, and climate control.
- ✔ OEM-Quality Standard: Built to meet or exceed original equipment specifications for lasting durability and performance.
- ✔ No Core Charge: Keep your old part without the hassle or expense of a core return.
- ✔ Broad Compatibility: Interchangeable with part numbers 25835966, 15263363, 15943678, 20939137, 22860591, and more.
Installation is typically straightforward, with the BCM located under the driver’s side dashboard near the steering column. While the physical swap takes minutes, please be aware of potential post-installation procedures. If the airbag light appears, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. In some cases, a ‘Brake Pedal Position Relearn’ may also be required. Always check for and clean primary ground connections during installation to ensure a solid repair.
Frequently Asked Questions
What does this Body Control Module do?
The BCM is a computer that manages your vehicle’s non-engine related functions, such as power windows, door locks, interior/exterior lighting, security system, wipers, and climate controls.
Is this part truly plug-and-play?
Yes. We program the module to your vehicle’s VIN before shipping. This ensures it communicates correctly with your truck’s other systems right out of the box, eliminating the need for dealership programming.
What if my airbag light is on after installation?
This is a common security measure. You will need a professional scan tool with the ability to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the new BCM with your vehicle’s airbag system.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep or dispose of your old module without any additional fees.
How can I be sure this fits my vehicle?
This module fits many 2007-2013 GM trucks and SUVs like the Sierra, Silverado, Suburban, and Yukon. It is a direct replacement for part number 15263363 and many others listed in the description. Providing your VIN during checkout guarantees compatibility.