If your 2003-2006 GMC Yukon XL 1500 is suffering from bizarre electrical problems, you’ve likely met the culprit: a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen these modules cause some of the most frustrating and hard-to-diagnose issues. The BCM is the central command center for your vehicle’s body electronics, managing everything from the dome lights and power windows to the HVAC system and security features. When it fails, your reliable SUV can feel like it’s haunted.
This replacement Body Control Module, part number 15194170, is the definitive solution. We take the guesswork and high cost out of the repair by pre-programming the module to your vehicle’s specific VIN. This means no expensive trip to the dealership for programming—it arrives ready for a true plug-and-play installation. Restore full functionality and peace of mind to your Yukon, Silverado, Tahoe, or other compatible GM vehicle.
A Technician’s Notebook: The Case of the Haunted Yukon
I remember a 2005 Yukon XL that came into my shop with a laundry list of complaints from the owner. The radio would cut out, the driver’s side power window worked only when it wanted to, and the security light would flash randomly, sometimes causing a no-start. The owner had already replaced the battery and checked fuses. After hooking up my scan tool, I saw multiple communication error codes with no clear pattern. This is a classic sign. In my experience, these widespread, intermittent electrical faults on GM trucks of this era almost always point to a failing BCM, often due to internal circuit board corrosion or a bad ground connection. Swapping in a programmed BCM solved all the issues in under 15 minutes.
Is Your Yukon Exhibiting These Electrical Issues?
A failing BCM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ HVAC controls are unresponsive, or the blower motor works sporadically.
- ✔ The security system malfunctions, causing alarm issues or preventing the engine from starting.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ An airbag warning light is illuminated on the dash, often with a DTC like B1001 (Option Configuration Error).
- ✔ Various communication-related Diagnostic Trouble Codes (DTCs) are present.
A Straightforward Guide to Installation
Replacing the 2003-2006 Yukon XL BCM is a job most DIYers can handle in their own driveway. The module is typically located under the driver’s side dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
- Locate the BCM: On most Yukons and similar GM trucks, it’s a black box with several large multi-pin connectors, secured by clips or small bolts under the dash.
- Swap the Module: Carefully disconnect the electrical connectors from the old BCM. Unclip or unbolt the old module and remove it. Install the new module in its place.
- Reconnect and Test: Firmly re-seat all electrical connectors onto your new BCM. Reconnect the battery terminal. Start the vehicle and test all functions—lights, windows, locks, and HVAC—to confirm the repair.
Post-Installation Note: In some cases, particularly if the airbag light was on, a ‘Setup SDM Primary Key’ procedure may be needed using a professional scan tool to sync the new BCM with the airbag system. There is no core charge; you can keep your old part.
Verified Fitment For Your GM Truck or SUV
This module is a direct replacement for part number 15194170 and interchanges with several other part numbers, ensuring broad compatibility. It is guaranteed to fit the following vehicles:
- GMC Yukon / Yukon XL 1500 / Yukon XL 2500: 2003, 2004, 2005, 2006
- GMC Sierra 1500 / 2500 / 3500 / Denali: 2003-2007 (Classic)
- Chevrolet Tahoe / Suburban 1500 / Suburban 2500: 2003-2006
- Chevrolet Silverado 1500 / 2500 / 3500: 2003-2007 (Classic)
- Chevrolet Avalanche 1500 / 2500: 2003-2006
- Cadillac Escalade / ESV / EXT: 2003-2006
- Hummer H2: 2003-2007
- Chevrolet Express & GMC Savana Vans: 2004-2007 (w/ opt PRP)
This part is the reliable, cost-effective fix for your vehicle’s electronic systems. By choosing our VIN-programmed 2003-2006 Yukon XL BCM, you’re getting a quality component that restores your vehicle to its proper operating condition without the dealership hassle.
Frequently Asked Questions
What does ‘VIN Programmed’ mean for me?
It means we program the module with your vehicle’s unique Vehicle Identification Number before shipping. This ensures it communicates correctly with your truck’s other computers right out of the box, with no additional programming needed.
Is this installation difficult for a DIYer?
Not at all. The BCM is usually held in by simple clips under the driver’s side dash. With basic hand tools, most people can swap it in under 15 minutes. Just disconnect the battery first!
Will this fix my airbag light?
If the airbag light is on due to a BCM communication error (like DTC B1001), this will resolve the root cause. However, you may need a professional scan tool to perform an ‘SDM Key Relearn’ to clear the light after installation.
Do I need to send my old BCM back?
No. There is no core charge or requirement to return your original part, which saves you time and return shipping costs.
What functions does the BCM control?
The Body Control Module is the brain for most non-engine related electronics. This includes interior/exterior lighting, power windows and locks, the alarm system, wipers, and the climate control (HVAC) system.