Are you dealing with baffling electrical issues in your 2002 GM truck or SUV? One minute the power windows work, the next they don’t. Maybe the security light is flashing, or the radio and gauges are acting possessed. As a technician with over two decades of experience, I’ve seen these exact gremlins hundreds of time, and the culprit is almost always a failing Body Control Module (BCM). It’s the nerve center for your vehicle’s body electronics, and when it goes, it can make a reliable truck feel like it’s falling apart.
Forget the expensive trip to the dealership and the hassle of programming a new module from scratch. Our professional cloning service is the simplest, most effective solution to get your truck back in order. We take your vehicle’s unique data—including VIN, key information, and other critical settings—from your original BCM and perfectly transfer it to this fully tested replacement unit. The result is a true plug-and-play module, ready for installation right out of the box. This is the definitive fix for your 2002 Escalade BCM problems.
Case Study: A Tricky Diagnosis
A customer brought in a 2002 Yukon XL with a complaint that stumped two other shops: the battery would die overnight, but only intermittently. All the usual parasitic draw tests came back clean. After hooking up my scope, I noticed the data bus network wasn’t going to sleep. The BCM was keeping other modules awake, slowly draining the battery. Water intrusion from a common windshield seal leak had caused micro-corrosion on the BCM’s circuit board. A new, cloned BCM not only fixed the battery drain but also resolved a slow power window issue the owner had forgotten to mention. It’s a classic example of how a failing BCM can cause a cascade of confusing symptoms.
Is Your Truck Showing These Symptoms?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is your likely solution:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting behavior.
- ✔ Security system faults or a constantly flashing security light.
- ✔ Gauges on the instrument cluster behaving strangely or not working.
- ✔ Communication error codes (U-codes) stored in the system.
- ✔ The radio or climate control system turning on or off by itself.
- ✔ A no-start condition where the engine cranks but won’t fire due to a security issue.
A Straightforward Guide to Installation
Replacing the BCM is a manageable job for a DIYer. Just follow these steps carefully. The module is 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 any electronic components.
- Locate the BCM: On these GM models, it’s found beneath the steering column. You may need to remove a lower dash panel for access.
- 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 from its mounting bracket.
- Install the New Module: Mount your new, cloned BCM in the same location and securely reconnect all electrical harnesses. Ensure they click into place.
- Reconnect Power: Reattach the negative battery terminal and tighten it.
- Test Functionality: Start the vehicle and test all the components controlled by the BCM—windows, locks, lights, radio, etc.—to confirm the repair.
Important Post-Installation Information
Because our cloning service transfers your vehicle’s original data, most functions will work immediately. However, in some cases, specific security handshakes between modules need to be re-established:
- Airbag System Sync: If the airbag warning light is on after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure must be performed with a capable diagnostic scan tool. This syncs the BCM with the airbag module.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor recalibration may be needed. This also requires a professional scan tool.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Will This Fit My Truck?
This BCM is a direct-fit replacement for several 2002 GM models and is compatible with multiple service numbers. Please verify your vehicle is on this list and that your original module carries one of the compatible service numbers.
Compatible Service Numbers: 15063577, 15081857, 19208544, 15095335, DKAJ, DPNW
- 2002 Cadillac Escalade: Body Control (BCM); (under steering column), 4×4
- 2002 Cadillac Escalade EXT: Body Control (BCM); (under steering column)
- 2002 Chevrolet Avalanche 1500: Body Control (BCM); (under steering column), 4×4
- 2002 Chevrolet Suburban 1500: Body Control (BCM); (under steering column), 4×4
- 2002 Chevrolet Tahoe: Body Control (BCM); (under steering column), 4×4
- 2002 GMC Yukon: Body Control (BCM); (under steering column), 4×4
- 2002 GMC Yukon XL 1500: Body Control (BCM); (under steering column), 4×4
Frequently Asked Questions About Our BCM Service
Frequently Asked Questions
What exactly is a “Cloning Service”?
Cloning is the process of reading the vital configuration data from your original BCM—like the VIN, mileage, and key codes—and writing it directly onto the replacement module. This makes the new module an exact electronic copy of the old one, eliminating the need for dealership programming.
Do I need to send my original BCM to you?
Yes. For the cloning service to work, we need your original module to extract the data. We will perform the service and ship both your original module and the ready-to-install replacement back to you.
Will this fix my no-start problem?
If your no-start issue is caused by the BCM’s vehicle anti-theft system (VATS/Passlock) failing, then yes, this service will resolve it. By cloning your key data, the new BCM will recognize your existing keys.
Is this a simple plug-and-play installation?
For 99% of functions, yes! Because we clone your data, the truck will start and run, and accessories will work. As noted above, a small percentage of vehicles may require a quick scan tool procedure to sync the airbag system if the warning light appears.
What happens to my old BCM?
Your original module is always returned to you along with the programmed replacement unit. We do not keep your core part.