Restore Your Vehicle’s Electrical System with a Pre-Programmed BCM
Are you battling frustrating electrical gremlins in your 2002 Cadillac Escalade or another compatible GM truck? Flickering lights, malfunctioning power windows and locks, or a security system that acts up on its own 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 daily drive unpredictable and annoying. This isn’t just an inconvenience; it can be a real headache. I’ve seen it countless times in my 20+ years of diagnostics—a simple BCM failure can mimic a dozen other problems, leading to wasted time and money on incorrect repairs.
This is your direct-fit, reliable solution. We offer a replacement Body Control Module, part number 15081796, that comes fully programmed to your vehicle’s specific VIN. Forget expensive dealership visits and programming fees. Simply provide us with your VIN after purchase, and our experts will flash the module with the latest GM software updates. This ensures seamless integration and restores your vehicle’s functions to factory specifications right out of the box. This is the most efficient way to get your truck or SUV back to 100%.
A Technician’s Notebook: The Case of the Ghostly Gauges
A customer brought in a 2002 Sierra 2500 with a bizarre complaint: sometimes the gauges would go dead, the radio would shut off, and the power windows would stop working all at once. Then, just as suddenly, everything would come back to life. He’d already replaced the battery and checked the main grounds. After hooking up my scan tool, I noticed intermittent communication loss with the BCM (U-codes). Instead of throwing parts at it, we inspected the BCM itself. On these GMT800 platforms, moisture intrusion or simple component fatigue on the BCM’s internal circuit board is a common culprit. Swapping in a pre-programmed BCM like this one solved every single issue instantly. It’s a textbook example of how a single module can cause a cascade of seemingly unrelated electrical problems.
Is Your GM Truck or SUV Showing These Symptoms?
- âś” Erratic or non-functional power windows, door locks, or mirrors.
- âś” Interior dome lights or exterior lights (headlights, taillights) staying on or not working at all.
- âś” The security or anti-theft light is on, and the vehicle may not start (Passlock issues).
- âś” Intermittent operation of the radio or instrument cluster gauges.
- âś” False warnings on the driver information center (DIC).
- âś” Diagnostic Trouble Codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
A Straightforward Guide to Your BCM Installation
Replacing the 2002 Escalade BCM is a manageable job for a confident DIYer. The location can vary between under the steering column or behind the center dash, so a quick check of a service manual for your specific model is always a good idea.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On most trucks like the Silverado, Sierra, and Escalade, it’s mounted under the driver’s side of the dashboard, near the steering column. On vans like the Astro and Safari, it’s often behind the center dash trim.
- 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, pre-programmed BCM in the same location. Securely plug in all electrical connectors, making sure they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, and radio—to confirm proper operation.
Important Post-Installation Steps
While this module is programmed for plug-and-play installation, some vehicle systems may require a ‘handshake’ with the new BCM. If you encounter an airbag warning light, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Additionally, some models might require a Brake Pedal Position sensor relearn to ensure proper brake light and traction control operation. Always consult a factory service manual for procedures specific to your vehicle.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It fits a wide range of GM vehicles, including:
- Cadillac Escalade (2002) – 4×2 models
- Chevrolet Avalanche 1500 (2002) – 4×2 models
- Chevrolet Blazer S10 (2002-2005)
- Chevrolet S10 Pickup (2002-2004)
- Chevrolet Silverado 1500/2500/3500 (2002)
- Chevrolet Suburban 1500/2500 (2002) – 4×2 models for 1500
- Chevrolet Tahoe (2002) – 4×2 models
- Chevrolet Astro Van (2002-2005)
- GMC Jimmy S15 (2002-2005)
- GMC Sonoma (2002-2004)
- GMC Sierra 1500/2500/3500/Denali (2002)
- GMC Yukon & Yukon XL 1500/2500 (2002) – 4×2 models for 1500
- GMC Safari Van (2002-2005)
Note: Please verify your original part number or the ID on your module to ensure a perfect match.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions to reply with your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we have this information to program it specifically for your vehicle.
Is this a plug-and-play part?
Yes, for most vehicles. Because we program it to your VIN, it eliminates the need for a trip to the dealer for programming. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake pedal position sensor if a warning light appears after installation.
Do I need to return my old BCM?
No. This purchase comes with no core charge. You can keep your original module, which saves you the hassle and cost of a core return.
What tools do I need for installation?
Basic hand tools are typically all that’s required, such as a socket set and a trim removal tool. No special electronic tools are needed for the physical installation. A professional scan tool may be needed only if post-install relearn procedures are necessary.
Will this fix my ‘Service 4WD’ message?
While a BCM can cause a variety of issues, a ‘Service 4WD’ message is more commonly related to the Transfer Case Control Module (TCCM), the encoder motor, or the dash switch. It’s best to diagnose that issue separately, though a failing BCM can sometimes cause communication faults that affect other systems.