Are you battling frustrating electrical issues in your GM truck or van? A faulty Body Control Module (BCM) is often the culprit behind problems like malfunctioning power windows, erratic lights, and mysterious warning messages. This BCM, compatible with part numbers including DKAK, 15063578, and 15095334, is the definitive solution. We take the guesswork and hassle out of the repair by pre-programming the module to your vehicle’s specific VIN before it ships. This ensures a seamless, plug-and-play installation, getting you back on the road without a costly trip to the dealership for programming.
Diagnosing a Failing 2002 Sierra BCM
The BCM acts as the central hub for your vehicle’s body electronics. When it begins to fail, it can create a cascade of seemingly unrelated symptoms. If you’re experiencing any of the issues below, a failing BCM is the likely cause. Replacing it with our VIN-matched unit restores factory functionality and reliability.
- ✔ Power windows, mirrors, or door locks working intermittently or not at all.
- ✔ Interior dome lights or exterior lamps staying on, draining your battery.
- ✔ The security light is on, and the engine is disabled (Passlock/Passkey issues).
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Windshield wipers behaving erratically or failing to operate.
- ✔ The “Service Vehicle Soon” light is illuminated on the instrument cluster.
- ✔ Inaccurate or dead gauges on your dashboard.
Plug-and-Play Solution
Your order includes professional programming. After you complete your purchase, simply provide us with your vehicle’s 17-digit VIN. Our technicians will flash the module with the latest GM software updates specific to your truck. This means when the part arrives, you can install it directly without needing any special tools for programming. There is no core charge, so you can keep your original module.
Post-Installation Information
In some cases, additional vehicle-specific relearn procedures may be necessary after installation. These are simple sync functions that a qualified technician can perform.
- Airbag System Sync: If the airbag light is on after installation, a “Setup SDM Primary Key in BCM” procedure is needed to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: A brake pedal position sensor recalibration might be required to ensure proper brake light and traction control operation.
Always consult a factory service manual or a qualified technician for guidance on your specific vehicle.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that manages and controls your vehicle’s body-related electronic accessories, such as the power windows, locks, interior/exterior lights, security system, and wipers.
Is this BCM difficult to install?
The physical installation is straightforward for someone with basic mechanical skills, as it’s typically located under the dashboard. Since we pre-program the module to your VIN, you avoid the complex and expensive programming step at a dealership.
How do I provide my VIN?
You can add your 17-digit VIN to the order notes during checkout, or we will contact you after your purchase to request it. We cannot ship the module until it has been programmed.
Do I need to return my old BCM?
No. This product comes with no core charge, so you are not required to send your original part back to us.
What if my airbag light is on after I install the new BCM?
This is a known possibility. It simply means the new BCM needs to be electronically introduced to the airbag module (SDM). A technician with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Will this fit my vehicle?
This module is a direct replacement for multiple GM part numbers, including DKAK, 15063578, 15081796, and 15095334. It fits a wide range of 2002-2005 GM trucks and vans like the Sierra, Silverado, Tahoe, Yukon, Astro, and Safari. Please check the fitment list for your specific model.