Restore Your GM Truck’s Electrical System with a Plug-and-Play Solution
Are you chasing electrical gremlins in your 2002 GMC Yukon or other GM truck? Flickering interior lights, power windows and locks with a mind of their own, or a security light that won’t turn off are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated problems. This isn’t just an annoyance; it can affect your vehicle’s security and daily usability.
We offer a dependable and straightforward fix. This BCM is a direct-fit replacement for part number 15081796 and other interchangeable numbers. The best part? We flash it with the latest GM software, programmed specifically to your vehicle’s VIN before it ships. This means you can bypass the expensive and time-consuming trip to the dealership for programming. You get a module that’s ready for installation right out of the box, restoring function and peace of mind.
From the Diagnostic Bay: The Case of the Haunted Sierra
I remember a 2002 Sierra 2500 that came into my shop with a laundry list of bizarre issues. The owner said the radio would switch off, the dome light would flicker while driving, and the power locks would cycle randomly. He had already replaced the battery and checked the main grounds. My initial scan showed communication loss codes with multiple modules. Instead of chasing each individual problem, experience pointed me straight to the BCM. After swapping in a new, correctly programmed module, every single one of the ‘haunted’ symptoms vanished. It’s a perfect example of how this one component can be the root cause of widespread electrical chaos.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need. Over my 20 years as a technician, these are the most common indicators I’ve seen for a faulty 2002 Yukon BCM or related GM vehicle BCM.
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security or anti-theft light stays illuminated, potentially causing a no-start condition.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Horn activating unexpectedly or not working when pressed.
- ✔ Intermittent warning lights on the dash, such as for the airbag or brake system.
- ✔ Communication error codes (like U-series codes) when scanned with a diagnostic tool.
A Straightforward Guide to Installation
Installing your new BCM is a manageable job for a confident DIYer. While the exact location can vary slightly, the process is generally consistent for most compatible trucks and vans. Always prioritize safety first.
- 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 Yukon, Tahoe, and Silverado, the BCM is located under the driver’s side of the dashboard, often near the steering column. On vans like the Astro and Safari, it’s typically behind the center dash area.
- 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 module from its mounting bracket.
- Install the New Module: Seat the new, pre-programmed BCM into the mounting bracket and securely plug in all the electrical connectors. You should hear a ‘click’ as they lock 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 horn—to confirm proper operation.
Post-Installation Notes
Because this module is pre-programmed, most functions should work immediately. However, in some cases, your vehicle may require one or two simple relearn procedures. This is normal and does not indicate a problem with the part.
- Airbag System Sync: If your airbag warning light is on after installation, a technician will need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a compatible scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure correct brake light and traction control operation.
Benefit: There is no core charge for this BCM. You can keep your old part without any extra fees or hassle.
Will This Fit My Vehicle?
This Body Control Module is a direct replacement for part number 15081796 and is guaranteed to fit a wide range of GM vehicles. Please verify your part number or match your vehicle from the list below. This part replaces: 15063578, 15081796, 15095334, 19208537, DKAK, DPNU.
AVALANCHE 1500 02 (4×2)
BLAZER S10/JIMMY S15 02-05
ESCALADE 02 (4×2)
S10/S15/SONOMA 02-04
SAFARI (GMC) 02-05
SIERRA 1500 / 2500 / 3500 / DENALI 02
SILVERADO 1500 / 2500 / 3500 PICKUP 02
SUBURBAN 1500 / 2500 02
TAHOE 02 (4×2)
YUKON 02 (4×2)
YUKON XL 1500 / 2500 02
Note: Please check the original part ID on your module for certain models like Astro, Safari, Blazer, and S10 to ensure perfect compatibility.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential for us to program the BCM with the correct, vehicle-specific software and calibrations from GM. This ensures it communicates properly with your truck’s other modules, making the installation process as simple as possible.
Is any additional programming needed after installation?
No, the core programming is done for you. However, as noted above, some vehicles may require a minor relearn procedure for the airbag or brake pedal position sensor, which can be performed with a professional scan tool if needed.
Do I have to send my old BCM back?
No. We do not require you to return your original module. There is no core charge associated with this purchase, saving you time and return shipping costs.
Where is the BCM located on my 2002 Yukon?
On the 2002 GMC Yukon, as well as the Tahoe, Suburban, and Silverado/Sierra pickups, the BCM is typically mounted under the driver’s side dashboard, to the left of the steering column.
What if my airbag light comes on after I install it?
This is an expected possibility. It means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.