Restore Control Over Your GM Truck’s Electronics
If you’re dealing with the maddening and unpredictable electrical issues common in early 2000s GM trucks and SUVs, you know the frustration. One minute your power windows work, the next they don’t. The security light is flashing for no reason, or your dashboard gauges are going haywire. As a technician with over two decades of experience, I can tell you that the Body Control Module (BCM) is very often the culprit. It’s the central nervous system for your vehicle’s comfort and convenience features, and when it fails, it creates chaos.
This isn’t just a replacement part; it’s a complete solution. We take a reliable BCM, service number 15063577, and program it with the latest official GM software specifically for your vehicle’s Vehicle Identification Number (VIN). This means you get a module that’s ready to install right out of the box, saving you from a costly trip to the dealership for programming. Simply provide us with your VIN after purchase, and we’ll handle the rest, ensuring a seamless integration with your truck’s systems.
From the Diagnostic Bay: The Case of the Confused Yukon
A customer brought in his 2002 Yukon XL, completely fed up. He explained, “The radio turns on and off by itself, the door locks cycle while I’m driving, and sometimes the dome lights won’t shut off, draining my battery.” He had already replaced the battery and checked all the fuses. After connecting my scan tool, I saw a handful of communication error codes (U-codes) pointing to a network issue. Instead of chasing individual components, experience told me to look at the network’s hub: the BCM. After swapping in a correctly programmed module, every single one of his phantom electrical issues vanished. It’s a classic failure pattern I’ve seen hundreds of times on these GMT800 platform vehicles.
Is Your GM Truck Exhibiting These Electrical Gremlins?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic instrument cluster behavior (gauges dropping to zero, warning lights flickering).
- ✔ The security or anti-theft light staying on, potentially causing a no-start condition.
- ✔ Interior or exterior lights not working correctly (e.g., dome lights won’t turn off).
- ✔ Communication Diagnostic Trouble Codes (DTCs) like U1000, B1001, or B1004 stored in the system.
- ✔ Inconsistent A/C compressor or blower motor operation.
A Straightforward Guide to Your BCM Installation
This installation is very manageable for a DIY enthusiast with basic tools. The BCM 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 and wait a few minutes before beginning.
- Locate the Module: Find the BCM under the steering column. It’s a plastic box with several large multi-pin electrical connectors.
- Disconnect and Remove: Carefully unplug all 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 BCM: Mount your new, pre-programmed BCM in the same location. Reconnect all electrical connectors, ensuring they click securely into place.
- Power Up: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions like windows, locks, and lights.
Important Final Steps After Installation
Because this module is pre-programmed, most vehicles will not require any further steps. However, in some cases, a ‘relearn’ or ‘sync’ procedure may be necessary:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag module.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor recalibration might be needed to ensure correct brake light and traction control operation.
- No Core Charge: You can keep your old module! There is no core charge or need to send the original part back to us.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the following 2002 models, 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
What does a Body Control Module (BCM) do?
The BCM is a computer that controls most of your vehicle’s non-engine related functions, such as power windows, door locks, interior and exterior lighting, security system, and wipers. It acts as a central hub for these systems.
Do I really need to provide my VIN?
Yes, providing your VIN is essential. We use it to program the module with the correct GM software and vehicle-specific options, ensuring it works perfectly with your truck right out of the box.
Why is my airbag light on after installation?
The BCM communicates with the airbag system (SDM). If the light is on, the modules need to be electronically re-synced. This requires a ‘Setup SDM Primary Key in BCM’ procedure with a professional-grade scan tool.
Is this part difficult to install myself?
For most DIYers, this is a straightforward job. The BCM is located under the driver’s side dash and involves unplugging the old one and plugging in the new one. No special programming tools are needed on your end.
What if my part number is slightly different?
This module is a direct replacement for several service numbers, including 15081857, 19208544, 15095335, DKAJ, and DPNW. As long as your vehicle is listed in our compatibility chart, this part will work.