Restore Your Truck’s Electrical System with a Reliable, Programmed BCM
If you’re dealing with bizarre electrical gremlins in your 2002 GM truck or SUV, you’re not alone. Flickering lights, malfunctioning power windows and locks, a security light that won’t turn off, or random warning messages on the dash are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can make your reliable truck feel unpredictable. This isn’t just an annoyance; it can affect safety and functionality. In my 20+ years as a technician, I’ve seen how a failing BCM can sideline an otherwise perfectly good vehicle.
We offer a straightforward, dependable solution. This Body Control Module is a direct-fit replacement for part number 15063577 and other compatible service numbers. The best part? We handle the programming for you. Simply provide your vehicle’s VIN during checkout, and we’ll flash the module with the latest GM software updates specific to your truck. This eliminates the need for an expensive trip to the dealership for programming, saving you time, money, and the hassle of a tow bill. This is the most efficient way to get a fully functional 2002 Yukon BCM or compatible module for your GM vehicle.
A Technician’s Notebook
I remember a 2002 Tahoe that came into the bay with a laundry list of complaints from the owner. The radio would turn on and off by itself, the driver’s side window worked intermittently, and the “Service 4WD” light was on, even though the transfer case was fine. A scan showed a dozen communication error codes (U-codes) all pointing back to the BCM. Instead of spending hours trying to program a new module from scratch, we installed a pre-programmed unit like this one. The entire job, from diagnosis to final checks, was done in under an hour. The customer was thrilled to have his truck back to normal so quickly, and we avoided the typical programming headaches. That’s the value of a part that arrives ready to install.
Common Signs of a Failing Body Control Module
- ✔ Erratic or non-functional power windows, door locks, and interior lights.
- ✔ The security or anti-theft light stays on, potentially causing a no-start condition.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Gauges on the instrument cluster behaving erratically or not working.
- ✔ False warning messages, such as “Service 4WD” or “Service Airbag.”
- ✔ Diagnostic Trouble Codes (DTCs) related to lost communication, such as U0140, U0155, or other U-codes.
- ✔ Wipers activating on their own or not responding to the switch.
A Straightforward Guide to BCM Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to power down completely.
- ✔ Locate the BCM: On these GM models, the BCM is typically located under the driver’s side of the dashboard, near the steering column. You may need to remove the lower dash panel for access.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, making sure they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test the functions: power windows, locks, lights, and wipers.
Important Post-Installation Information
While this 2002 Yukon BCM is delivered ready for installation, some vehicles may require additional steps to sync with other onboard systems. Please be aware of the following possibilities:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is necessary. This requires a professional-grade diagnostic tool to synchronize the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure correct brake light operation and to prevent issues with the traction control system. This can also be performed with a compatible scan tool.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any part of the installation or post-install procedures.
Verified Vehicle Compatibility
This module is a direct replacement for service numbers 15063577, 15081857, 19208544, 15095335, DKAJ, and DPNW. It is guaranteed to fit the following vehicles with the specified options:
- 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
Why do you need my VIN?
We require your Vehicle Identification Number (VIN) to program the BCM with the correct, vehicle-specific software and the latest updates from GM. This ensures it communicates properly with your truck’s other modules right out of the box.
Is this a plug-and-play part?
Yes, for most vehicles this is a plug-and-play solution because the critical programming is done before we ship it. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake systems, which needs a professional scan tool.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module, saving you the time and expense of shipping a core back.
Will this fix my “Service 4WD” light?
A faulty BCM is a very common cause of a false “Service 4WD” message on these trucks. If the BCM is the root cause of the issue, then replacing it with this programmed unit should resolve the light.
What tools do I need for installation?
Basic hand tools are typically all that’s required for the physical installation, such as a socket set and a trim removal tool to access the module under the dash. Post-installation relearn procedures, if needed, require a high-end diagnostic scan tool.