Restore Your Truck’s Brain and Banish Electrical Gremlins
Are you chasing down bizarre electrical issues in your 2002 GM truck? One minute the power windows work, the next they don’t. The security light flashes for no reason, or the gauges on your dash have a mind of their own. As a technician with over two decades of experience, I’ve seen these exact frustrations countless times. The culprit is almost always a failing Body Control Module (BCM). It’s the central hub for your vehicle’s body electronics, and when it starts to go, it creates a cascade of confusing problems. This isn’t just an inconvenience; it can affect your vehicle’s security and basic functions.
This is your direct, reliable solution. We offer a replacement 2002 Yukon Body Control Module that comes fully programmed to your vehicle’s specific VIN. You provide us with your VIN at checkout, and our experts flash the module with the latest GM software updates. This means you can skip the expensive trip to the dealership for programming. You get a part that’s ready to install right out of the box, designed to restore the factory performance and reliability you depend on.
From the Diagnostic Bay
“A customer’s 2002 Tahoe came in last week with a laundry list of complaints: the radio would turn off randomly, the driver’s side power lock was dead, and the ‘Service 4WD’ light was on, even though the 4×4 system was mechanically sound. He had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw multiple communication loss codes pointing to the BCM. Water intrusion from a leaky windshield seal had corroded a section of the board—a common failure point on these GMT800 platforms. We installed one of our VIN-programmed modules, performed the quick post-install procedures, and every single electrical issue was resolved. It’s a textbook BCM failure, and this is the definitive fix.”
Is Your GM Truck Showing These Symptoms?
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic instrument cluster gauges or warning lights (like Security or ABS).
- ✔ Interior dome lights staying on or not working at all.
- ✔ The horn honking randomly or the alarm system acting up.
- ✔ Communication errors with diagnostic scan tools.
- ✔ No-start conditions where the engine cranks but won’t fire due to security system faults.
A Straightforward Guide to Installation
Replacing the BCM is a manageable job for a confident DIYer. 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 any electronic components.
- Locate the BCM: On most of these trucks, it’s a black plastic box mounted to a bracket under the steering column. You may need to remove a lower dash panel for access.
- Disconnect Connectors: Carefully unclip the multiple wiring harness connectors from the old BCM. They have locking tabs, so don’t force them. Note their orientation.
- Remove the Old Module: Unbolt or unclip the old BCM from its mounting bracket and remove it from the vehicle.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all the wiring harnesses.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Post-Install Procedures: Follow the critical steps below to ensure full system functionality.
Important Post-Installation Steps
After installing your new 2002 Yukon Body Control Module, a couple of final steps are required to sync it with your vehicle’s other systems. This is crucial for safety and proper operation.
- Airbag System Reset: The airbag warning light will likely be on. You must perform the ‘Setup SDM Primary Key in BCM’ procedure using a compatible bi-directional scan tool. This re-establishes the security handshake between the BCM and the airbag system (SDM).
- Brake Pedal Position Sensor Relearn: Some vehicles may require you to perform a brake pedal position sensor relearn. This ensures the BCM accurately reads the brake pedal input, which is vital for brake light operation and stability control systems.
Note: If you are not comfortable with these procedures or do not have the necessary tools, we strongly recommend seeking assistance from a qualified professional mechanic.
Verified Vehicle Compatibility
This module is a direct fit for the following vehicles, specifically matching part 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)
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming before we ship the part. Just provide your vehicle’s 17-digit VIN during checkout, and it will arrive ready for installation with the latest GM software.
What tools are needed for the post-installation procedures?
You will need a professional-grade, bi-directional scan tool (like a Snap-on, Autel, or GM Tech 2) that can perform security and body control functions. Basic code readers cannot perform these tasks.
Will this fix my ‘Service 4WD’ light?
If the light is caused by a communication fault originating from the BCM, then yes, this will likely resolve the issue. However, the light can also be triggered by mechanical problems in the 4×4 system, so proper diagnosis is key.
Where is the BCM located on my 2002 Yukon?
The Body Control Module is typically found under the driver’s side dashboard, attached to a bracket near the steering column. You will likely need to remove the lower plastic dash panel to see it clearly.
Is this a brand new part?
This is a high-quality, fully tested replacement part that is guaranteed to perform to OEM standards. We ensure every module is programmed correctly and functions perfectly before it leaves our facility.