If you’re dealing with a storm of bizarre electrical issues in your 2007-2011 GMC Yukon XL 1500, you’ve likely met the culprit: a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can cause chaos—from flickering lights and a dead HVAC system to random security alerts and even stalling. Stop chasing down individual symptoms and address the root cause with this direct-fit, VIN-programmed BCM, equivalent to GM part number 25790509.
We take the guesswork and dealership hassle out of the equation. Simply provide your vehicle’s VIN at checkout, and our technicians will pre-program this module with the latest GM software specific to your Yukon. This ensures it works seamlessly right out of the box, restoring all functions it governs: power windows, door locks, interior and exterior lighting, wipers, and climate controls. This is the reliable, straightforward solution for both professional mechanics and determined DIYers.
Case Study: A Tricky Diagnosis
A customer brought in a 2008 Sierra with a frustrating mix of problems: the radio would cut out, the driver’s side power window worked intermittently, and the airbag light was on with a B1001 code. They had already replaced the window switch and checked fuses. In my shop, I’ve seen this exact combination dozens of times. While we always check the main ground connections first (a common issue on these GMT900 platforms), the presence of multiple, unrelated electronic failures almost always points back to the BCM. A failing BCM can’t properly route data and power, leading to this kind of system-wide glitch. Installing a new, correctly programmed BCM solved all three issues in under 15 minutes.
Is Your Yukon Exhibiting These Electrical Gremlins?
A failing BCM doesn’t always trigger a check engine light, often leaving owners confused. Here are the most common signs that your module needs replacement:
- ✔ Erratic or non-functional power windows, door locks, or interior lights.
- ✔ HVAC controls not responding or the blower motor working intermittently.
- ✔ The anti-theft system acting up, causing no-start or stalling conditions.
- ✔ An active airbag warning light, often with a Diagnostic Trouble Code (DTC) B1001.
- ✔ Wipers that won’t turn on, off, or operate at the correct speed.
- ✔ A cascade of communication error codes (U-codes) when scanned with a pro-level tool.
Your Quick-Start Installation Guide
Replacing the 2007-2011 Yukon XL 1500 BCM is a job most owners can handle in their driveway. The module is located under the driver’s side 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: Remove the lower dash panel beneath the steering wheel to access the module. It’s a black box with several large multi-pin connectors.
- Swap the Modules: Carefully depress the locking tabs on each electrical connector and pull them straight out. Unclip or unbolt the old BCM and remove it. Mount the new module in its place.
- Reconnect and Test: Firmly plug all connectors into your new, pre-programmed BCM. Reconnect the battery terminal. Start the vehicle and test all functions: lights, locks, windows, wipers, and HVAC.
- Post-Install Checks: In some cases, an airbag light may persist. This requires a professional scan tool to perform the ‘Setup SDM Primary Key’ function. A ‘Brake Pedal Position Relearn’ may also be needed. This is normal and ensures all systems are correctly synced.
Verified Fitment for Your GM Truck or SUV
This Body Control Module is a direct replacement for part 25790509 and other interchangeable numbers. It is guaranteed to fit the following vehicles (among others):
- GMC: Yukon, Yukon XL 1500/2500, Sierra 1500/2500/3500, Sierra Denali (2007-2013)
- Chevrolet: Tahoe, Suburban 1500/2500, Silverado 1500/2500/3500, Avalanche 1500 (2007-2013)
- Cadillac: Escalade, Escalade ESV, Escalade EXT (2007-2013)
Please verify your part number or contact us with your VIN to ensure perfect compatibility.
Frequently Asked Questions
What does a Body Control Module do in my Yukon?
The BCM acts as the computer for your vehicle’s body-related accessories. It controls non-engine functions like your lights, power windows, door locks, security system, wipers, and climate control system.
Is this module truly plug-and-play?
Yes. By programming the module to your vehicle’s VIN before shipping, we eliminate the need for expensive dealership programming. Installation is a direct swap, though some vehicles may require a simple relearn procedure for the airbag or brake pedal position sensor as noted.
What if my airbag light stays on after installation?
This is a common security feature on GM vehicles. If the airbag light is on, it means the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). This is done via the ‘Setup SDM Primary Key in BCM’ procedure using a bi-directional scan tool.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your old module, saving you the time and hassle of a return shipment.
How do I know this is the right part for my truck?
This module replaces part number 25790509 and many others. The best way to confirm is to match the part number on your original BCM. If you are unsure, provide us with your VIN, and we will verify the correct fitment for you.