End the Electrical Gremlins in Your GM Truck
Are you dealing with bizarre electrical issues in your 2002 GM truck or SUV? Flickering lights, malfunctioning power windows or door locks, a security light that won’t turn off, or a persistent “Service 4WD” message? These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can make your reliable truck feel unpredictable. This replacement Body Control Module, part number 15063577, is the definitive solution to restore order and get your vehicle operating as it should.
A Technician’s Notebook: The Case of the Haunted Tahoe
I once had a 2002 Tahoe in my bay that the owner swore was haunted. The dome lights would turn on while driving, the radio would shut off randomly, and occasionally, the security system would prevent it from starting. He’d replaced the battery and checked grounds, but the gremlins remained. A quick scan showed a slew of communication errors pointing back to one culprit. We swapped in a pre-programmed module just like this one. The installation took less than 30 minutes, and instantly, all the spooky electrical issues vanished. This isn’t just a part; it’s peace of mind and an end to frustrating diagnostics.
Is Your Truck Showing These Symptoms?
- ✔ Erratic power window or door lock operation.
- ✔ Interior or exterior lights flickering or not working correctly.
- ✔ The security or anti-theft light stays on, causing a no-start condition.
- ✔ False warnings on the dash, such as the “Service 4WD” message.
- ✔ Intermittent failure of the radio or climate controls.
- ✔ Communication Diagnostic Trouble Codes (DTCs) like U1000 or other U-series codes.
The Smart Solution: Pre-Programmed for Your Vehicle
Forget the expensive trip to the dealership and the hassle of scheduling a programming appointment. We take care of the most critical step for you. When you purchase this 2002 Avalanche 1500 BCM, simply provide us with your vehicle’s 17-digit VIN. Our technicians will then flash the module with the latest, most stable software directly from GM, ensuring it’s a perfect match for your truck’s specific options and configuration. It arrives at your door ready for installation, saving you time, money, and headaches.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On these GM models, the BCM is typically located under the driver’s side of the dashboard, near the steering column. It’s a black plastic box with several large electrical connectors.
- ✔ Remove Connectors: Carefully press the release tabs on each wiring harness connector and pull them straight out from the old BCM. They are color-coded to prevent mix-ups.
- ✔ Swap the Module: Unclip or unbolt the old BCM from its mounting bracket. Position the new, pre-programmed module in its place and secure it.
- ✔ Reconnect Everything: Plug the wiring harnesses back into their corresponding slots on the new BCM. You’ll hear a click as they lock into place. Reconnect the negative battery terminal.
- ✔ Post-Installation Checks: Start the vehicle and test all functions: lights, locks, windows, radio, etc. Note that some post-install procedures may be required (see below).
Important Post-Installation Information
While this module is programmed to be as plug-and-play as possible, some GM security and safety systems may require a ‘handshake’ with the new BCM. Specifically:
- ✔ Airbag System Sync: If your airbag warning light illuminates after installation, a simple “Setup SDM Primary Key in BCM” procedure is needed. This requires a professional-grade diagnostic tool to sync 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 and traction control operation.
There is no core charge for this part. You can keep your old module, eliminating the hassle and expense of a core return.
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 (4×4)
- 2002 Cadillac Escalade EXT
- 2002 Chevrolet Avalanche 1500 (4×4)
- 2002 Chevrolet Suburban 1500 (4×4)
- 2002 Chevrolet Tahoe (4×4)
- 2002 GMC Yukon (4×4)
- 2002 GMC Yukon XL 1500 (4×4)
If you’re tired of chasing electrical problems, this pre-programmed 2002 Avalanche 1500 BCM is the reliable, efficient fix you’ve been looking for. Order today and restore your truck’s functionality.
Frequently Asked Questions
Do I need to send my old BCM back?
No. This part has no core charge. You can keep your original module without any extra fees or hassle.
What information do you need to program the module?
After you place your order, we will need your vehicle’s 17-digit Vehicle Identification Number (VIN) to program the BCM with the correct software and settings for your truck.
Will this fix my “Service 4WD” light?
In many cases, yes. The BCM controls the 4WD indicator and switch functions. If the module is failing, it often causes a false “Service 4WD” warning. Replacing a faulty BCM is a very common fix for this issue.
What tools do I need for the airbag or brake relearn procedures?
These procedures require a bi-directional professional scan tool, such as a GM Tech 2 or a high-end Snap-on or Autel scanner. Most basic code readers cannot perform these functions. If needed, a local repair shop can perform these syncs for you.
Is this a new or used part?
This is a high-quality, tested replacement part that is guaranteed to function correctly. It is loaded with new, vehicle-specific software from GM based on your VIN.