Is Your Yukon XL Experiencing Bizarre Electrical Problems?
If your 2010 GMC Yukon XL 1500 is acting possessed—with flickering lights, malfunctioning power windows or locks, a security system that won’t cooperate, or strange warnings on the dash—you’re likely dealing with a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, managing everything from interior lighting and keyless entry to the anti-theft system. When it fails, it can cause a cascade of confusing and frustrating issues that are often misdiagnosed.
From the Diagnostic Bay
We had a 2010 Tahoe come in that was driving the owner crazy. The battery would die overnight, the radio would randomly turn off, and the dome lights had a mind of their own. He had already replaced the battery and alternator twice. After running a full diagnostic scan, we found multiple communication error codes pointing back to one culprit: the BCM. Instead of just replacing it and sending him to a dealer for costly programming, we installed a VIN-programmed module just like this one. The vehicle was back to normal in under an hour, solving months of headaches with one simple part replacement.
Symptoms of a Failing Body Control Module
- ✔ Erratic or non-functional interior and exterior lights (headlights, taillights, dome lights).
- ✔ Power windows, door locks, or mirrors not working correctly or at all.
- ✔ The security system or keyless entry system malfunctioning.
- ✔ The horn honking unexpectedly or not working when pressed.
- ✔ Dashboard warning lights illuminating for no reason (e.g., ABS, Airbag, Check Engine).
- ✔ Intermittent starting problems or a no-start condition.
- ✔ Communication errors (U-codes) when scanned with a diagnostic tool.
The Simple, Dealer-Free Solution: A VIN-Programmed BCM
Don’t let a faulty module keep you off the road or force you into an expensive and time-consuming visit to the dealership. This genuine GM Body Control Module, part number 20935349, is the definitive solution. We take the hassle out of the repair by programming the module specifically to your vehicle’s VIN before we ship it. This ensures it arrives ready for installation, loaded with the latest GM software updates for optimal performance and reliability. By providing us with your VIN at checkout, you get a component that is truly plug-and-play for your 2010 Yukon XL Body Control Module replacement.
Installation and Post-Install Notes
Installation is straightforward for those with moderate mechanical skill. The BCM is typically located under the steering column or behind the dash. Once the new module is installed, most functions will be immediately restored. However, in some cases, additional steps may be required:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: A brake pedal position sensor relearn may be necessary to ensure proper brake light and traction control operation.
This module is a direct replacement for a wide range of part numbers, including 15819552, 15948439, 20815898, 22860591, 25892622, and many more, fitting dozens of GM models from trucks and SUVs to sedans. Best of all, there is no core charge, so you can keep your original module.
Frequently Asked Questions
What exactly does a Body Control Module do?
The BCM is a computer that controls and monitors the various electronic accessories in your vehicle’s body. This includes power windows, locks, mirrors, lights, security system, wipers, and more. It acts as a hub, ensuring all these components work together as intended.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your order until we receive this information, as the programming is essential for the module to function in your specific vehicle.
Is this a difficult part to install myself?
For someone with basic automotive repair experience, the installation is manageable. The BCM is usually accessible under the driver’s side dashboard. The main challenge is accessing the part, but the physical replacement involves disconnecting the battery and swapping electrical connectors. However, always consult a service manual for your specific vehicle’s procedure.
Will this fix the specific electrical problems in my 2010 Yukon XL?
If your vehicle’s symptoms match the common signs of BCM failure and a proper diagnosis has confirmed the BCM is at fault, this part is the correct solution. Our VIN programming ensures it will work with your vehicle’s existing systems, resolving those frustrating electrical gremlins.
What if my airbag light comes on after I install the new BCM?
This is a known possibility. The new BCM needs to be electronically ‘introduced’ to the airbag’s Supplemental Deployment Module (SDM). This requires a professional-grade scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure, which syncs the systems and turns off the light.
Do I need to send my old BCM back?
No. This product has no core charge. You can keep your original part without any extra fees or hassle.