Are you battling frustrating electrical gremlins in your GM truck or SUV? Intermittent power windows, flickering lights, or a security system that has a mind of its own are common signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a wide range of confusing and unpredictable problems. This VIN-programmed BCM is the definitive solution to restore your vehicle’s electronic functions and get you back on the road with confidence.
From the Diagnostic Bay
We had a 2002 Sierra 2500 in the shop that was driving the owner crazy. The radio would turn off randomly, the dome light would stay on, and the power locks only worked when they felt like it. He had already replaced the battery and checked all the fuses. After connecting our scan tool, we saw multiple communication loss codes pointing to the BCM. We installed a VIN-programmed module just like this one, and instantly, all the bizarre electrical issues were gone. It’s a common failure point that can mimic a dozen other problems.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security system or keyless entry system malfunctioning.
- ✔ Unexplained warning lights on the instrument cluster, such as the airbag light.
- ✔ The radio or climate control system behaving unpredictably.
- ✔ A no-start condition due to security system failure.
Plug-and-Play Solution for Your 2002 Sierra 3500 BCM
Forget expensive dealership visits and programming fees. This Body Control Module is a direct-fit replacement for your original unit and comes pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load the latest GM software updates, ensuring optimal performance and compatibility. Simply provide us with your VIN after purchase, and we’ll handle the programming before shipping. This makes installation straightforward, getting your truck back to factory-spec functionality without the hassle.
This module is a direct replacement for part numbers: 15063578, 15081796, 15095334, 19208537, DKAK, DPNU.
Important Installation Notes
While this is a plug-and-play part, some vehicles may require minor post-installation procedures for full system integration. There is no core charge for this part; you can keep your old module.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure correct brake light operation and traction control function.
Always consult a factory service manual or a qualified technician for vehicle-specific procedures.
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that controls many of your vehicle’s non-engine-related electronic features, such as power windows, locks, lights, wipers, security system, and instrument panel functions.
Is this BCM ready to install out of the box?
Yes! This BCM comes pre-programmed to your vehicle’s VIN. We handle all the programming before shipping, so it’s ready for installation. In some cases, minor relearn procedures may be needed after installation.
Where is the BCM located on a 2002 GMC Sierra?
On most 2002 GM trucks like the Sierra, Silverado, Tahoe, and Yukon, the BCM is typically located under the driver’s side of the dashboard, near the steering column.
Will this fix my airbag light?
If the BCM is the cause of the airbag light, this part will resolve the issue. However, after installation, the system may need to be synced using a ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool to turn the light off.
Do I need to send my old BCM back?
No, there is no core charge for this module. You can keep your original part.