Restore Your Truck’s Brain and End Electrical Frustration
If you’re dealing with bizarre electrical issues in your 2002 GM truck or SUV—like power windows with a mind of their own, a security light that won’t turn off, or gauges going haywire—you’re likely facing a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can turn your reliable truck into a source of daily headaches. I’ve seen it hundreds of times in my shop; what seems like multiple, unrelated problems often traces back to this single component.
This isn’t just a replacement part; it’s a complete solution. We take a genuine OEM BCM and flash it with the latest official GM software, specifically programmed to your vehicle’s VIN. This means you get a module that’s ready to install right out of the box, saving you a costly trip to the dealership and the hassle of finding someone with the right programming equipment. By providing us with your VIN at checkout, you ensure a perfect software match for your truck’s specific options and features.
From the Diagnostic Bay
A customer brought in his 2002 Yukon XL last month with a laundry list of complaints: the radio would randomly shut off, the driver’s side power lock was dead, and the security light was always on, occasionally preventing it from starting. He’d already replaced the battery and checked fuses. After hooking up my scanner, I saw multiple communication loss codes with various modules. This immediately pointed me to the BCM. Instead of a complex wiring chase, we installed a VIN-programmed 2002 Escalade BCM (the same part number), and every single issue was resolved in under an hour. It’s a classic failure pattern for these otherwise fantastic trucks.
Is Your Truck Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior lights staying on or not working at all.
- ✔ The security system acting up or preventing the engine from starting.
- ✔ Inconsistent instrument cluster gauge operation.
- ✔ Communication errors with other vehicle modules (DTCs).
- ✔ Problems with the radio or HVAC controls.
A Straightforward Guide to Installation
Replacing the BCM is a manageable job for a DIYer with basic tools. It’s typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Access the Module: You may need to remove the lower dash panel (knee bolster) to get a clear view of the BCM. It’s usually held in by a few screws or clips.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM and remove it.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical harnesses. You should hear a ‘click’ as they lock into place.
- Post-Installation Procedures: Reconnect the battery. Follow the critical post-install steps outlined below to ensure all systems, like the airbags and brakes, are properly synced with the new module.
Critical Post-Installation Steps for Your 2002 Escalade BCM
After installing your new Body Control Module, a few final steps are essential for full system integration and safety. These procedures sync the new BCM with other critical vehicle systems.
- Airbag System Reset: The airbag warning light will likely be on. You must perform the ‘Setup SDM Primary Key in BCM’ procedure using a professional-grade diagnostic scan tool. This re-establishes the security handshake between the BCM and the airbag module (SDM).
- Brake Pedal Position Sensor (BPPS) Recalibration: Some vehicles require the brake pedal position sensor to be recalibrated after a BCM replacement. This ensures the brake lights and stability control systems function correctly.
Note: While these are common procedures, the exact steps can vary. If you are unsure, consulting your vehicle’s service manual or a professional technician is highly recommended.
Will This Fit My Truck?
This Body Control Module is a direct-fit replacement for the following 2002 models. It is compatible with service numbers 15063577, 15081857, 19208544, 15095335, DKAJ, and DPNW.
- 2002 Cadillac Escalade (Body Control, under steering column, 4×4)
- 2002 Cadillac Escalade EXT (Body Control, under steering column)
- 2002 Chevrolet Avalanche 1500 (Body Control, under steering column, 4×4)
- 2002 Chevrolet Suburban 1500 (Body Control, under steering column, 4×4)
- 2002 Chevrolet Tahoe (Body Control, under steering column, 4×4)
- 2002 GMC Yukon (Body Control, under steering column, 4×4)
- 2002 GMC Yukon XL 1500 (Body Control, under steering column, 4×4)
Frequently Asked Questions
Do I need to do any programming myself?
No. This BCM arrives fully programmed to your vehicle’s VIN. Just provide your VIN during checkout, and we handle all the software flashing before it ships. This makes the installation process much simpler.
What is a VIN and where do I find it?
The VIN is your vehicle’s unique 17-digit identification number. You can typically find it on the driver’s side of the dashboard (visible through the windshield) or on the sticker inside the driver’s door jamb.
Will this fix my ‘Service 4WD’ light?
While the BCM communicates with many systems, a ‘Service 4WD’ message is more often related to the Transfer Case Control Module (TCCM) or the encoder motor. It’s best to have the codes scanned to pinpoint the exact cause before ordering.
What tools are needed for the post-installation procedures?
The airbag key setup and brake sensor recalibration require a bi-directional scan tool, such as a Tech 2 or a high-end professional scanner. Basic code readers cannot perform these functions. Many local repair shops can perform these procedures for you if you don’t have the tool.
Is this a new or used part?
This is a high-quality, inspected, and tested original equipment part that has been professionally prepared with new GM software specific to your vehicle.