Restore Full Electrical Function to Your GM Vehicle
If you’re dealing with the frustrating and unpredictable electrical gremlins in your 2010 GMC Yukon, you’ve come to the right place. As a technician with over two decades of experience under the hood, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable vehicle into a source of constant headaches. The BCM is the central nervous system for your truck’s body electronics, managing everything from your power windows and locks to your interior lights and security system. When it starts to fail, the symptoms can be maddeningly inconsistent.
This isn’t just another part. This is a complete, ready-to-install solution. We take a genuine OEM-quality BCM and program it with the very latest GM software, specifically matched to your vehicle’s VIN. This critical step, which we handle for you before shipping, means you can bypass the expensive and time-consuming trip to the dealership for programming. You get a part that’s truly plug-and-play, designed to restore your vehicle’s functions precisely as the factory intended.
Case Study: A Tricky Diagnosis
A customer brought in his 2010 Yukon last month with a bizarre list of complaints: the dome lights would stay on, the radio display would flicker, and occasionally, the truck would refuse to start, showing a security warning. He’d already replaced the battery and checked the alternator. After hooking up my scan tool, I noticed communication errors between several modules, all pointing back to a single culprit. The BCM was failing internally, causing a network-wide disruption. Swapping in a pre-programmed 2010 Yukon Body Control Module like this one resolved all issues in under an hour. It’s a common failure point I’ve diagnosed hundreds of times on these GM platforms.
Is Your Vehicle Exhibiting These BCM Failure Signs?
A faulty BCM can manifest in numerous ways. If you’re noticing any of the following, this module is the likely solution:
- ✔ Erratic power windows or door locks that work intermittently.
- ✔ Interior or exterior lights that won’t turn on or off.
- ✔ The security or anti-theft system light is on, preventing the engine from starting.
- ✔ Dashboard warning lights appearing and disappearing without reason.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Communication error codes stored when checked with a professional scan tool.
Your Step-by-Step BCM Installation Guide
For the confident DIYer, replacing the BCM is a manageable job. The location on a 2010 Yukon is typically under the steering column on the driver’s side. Here’s a general guide:
- Safety First: Always 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 GMT900 trucks and SUVs (like the Yukon/Tahoe), you’ll find the BCM mounted to a bracket under the driver’s side of the dashboard, near the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once all connectors are free, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Seat your new, pre-programmed BCM into the mounting bracket and reconnect all the electrical connectors. Ensure they click securely into place.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Perform Final Procedures: Follow the critical post-installation steps below to ensure all systems, especially safety features, are working correctly.
Important Final Steps After Installation
This is not optional. To ensure your vehicle operates safely and correctly after installing the new 2010 Yukon Body Control Module, these procedures are necessary. Failure to perform them can result in warning lights and disabled safety systems.
- Airbag System Reset: The ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible, high-level diagnostic scan tool. This re-establishes the security handshake between the BCM and the airbag module (SDM), which will turn off the airbag warning light.
- Brake Pedal Position Sensor Relearn: Some vehicles require the Brake Pedal Position (BPP) sensor to be recalibrated after BCM replacement. This ensures the brake lights and stability control system function correctly. This is also done with a professional scan tool.
Verified Fitment for a Wide Range of GM Vehicles
This BCM, part number 20935349, is a direct replacement for a vast array of General Motors cars, trucks, and vans. It is compatible with the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, and 95151084. Please check the fitment list to confirm it matches your specific vehicle model and year.
Frequently Asked Questions
Why do you need my VIN to program the BCM?
Your Vehicle Identification Number (VIN) allows us to load the exact software and vehicle-specific options your Yukon came with from the factory. This ensures all features work correctly and eliminates the need for dealer programming.
Is this a difficult part to install myself?
For someone with moderate mechanical skill, the physical replacement is straightforward. The main challenge is accessing the module under the dash. The most critical part is performing the post-installation relearn procedures with a proper scan tool.
What happens if I don’t do the airbag and brake relearn procedures?
You will likely have a persistent airbag warning light on your dash, and the supplemental restraint system (airbags) may be disabled. The brake lights or stability control system could also function improperly, which is a significant safety risk.
Will this fix my ‘Service Theft System’ message?
Yes, in most cases, a faulty BCM is the root cause of security system errors and no-start conditions related to the Pass-Key or Pass-Lock systems. This programmed module will restore that functionality.
Is this a new or used part?
This is a high-quality, inspected, and tested recycled OEM part that has been programmed with the latest software for your vehicle, ensuring reliable performance.