Restore Full Control Over Your GM Vehicle’s Electronics
Are you chasing down frustrating electrical gremlins in your 2010 GMC Yukon? Flickering lights, power windows with a mind of their own, or a persistent “Service StabiliTrak” message can all point to one central culprit: a failing Body Control Module (BCM). As the electronic nerve center for your vehicle’s comfort and convenience features, a faulty BCM can create a cascade of bizarre, seemingly unrelated problems. This isn’t just an annoyance; it can impact vehicle security and safety systems.
This replacement Body Control Module, part number 20921435, is the definitive solution. We take the biggest headache out of the repair process. Before we ship it, our technicians will program the module with the latest GM software updates, specifically flashed to your vehicle’s unique VIN. This means you get a part that is ready for installation right out of the box, saving you a costly trip to the dealership and their programming fees. Restore your vehicle’s functionality and your peace of mind with a reliable, properly configured BCM.
A Technician’s Notebook: The Case of the Haunted SUV
A customer brought in their 2010 Yukon last month with a laundry list of complaints. The interior lights would pulse randomly, the radio would shut off, and the remote keyless entry worked only intermittently. They had already replaced the battery and checked the main grounds. Using a professional scan tool, I saw multiple U-codes (communication errors) between the BCM and other modules. This is a classic sign. In my shop, I’ve diagnosed hundreds of these BCM failures. The internal circuit boards can develop micro-fractures from years of thermal cycles and vibration, leading to exactly this kind of unpredictable behavior. Swapping in a VIN-programmed BCM resolved all the issues in a single visit, confirming the diagnosis.
Is Your Vehicle Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security system or alarm randomly activating or failing to set.
- ✔ Dashboard warning lights, such as for the airbag or StabiliTrak system, are illuminated.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire up.
- ✔ Remote keyless entry (RKE) fob not working correctly.
- ✔ Communication errors with a diagnostic scan tool.
Your Straightforward BCM Installation Guide
Replacing the 2010 Yukon Body Control Module is a manageable job for a confident DIYer. The BCM is typically located under the driver’s side of the dashboard, near the steering column. Follow these steps carefully for a successful installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10-15 minutes to allow all systems to power down completely.
- Locate the BCM: On the 2010 Yukon, you’ll find the BCM mounted to a bracket under the driver’s side dash. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM onto the bracket and securely plug in all the electrical connectors. You should hear a click as they lock into place.
- Reconnect Power: Re-attach the negative battery terminal and tighten it securely.
- CRITICAL Final Steps: After installation, two procedures are often required. First, the ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible high-end scan tool to ensure the airbag system communicates correctly and to clear the warning light. Second, some vehicles may need a Brake Pedal Position Sensor recalibration. If you are not equipped to perform these steps, professional assistance is recommended to ensure vehicle safety.
Verified Compatibility for Your GM Vehicle
This BCM is a direct replacement for a wide range of General Motors vehicles. Please verify your part number or match your vehicle from the list below. This module is compatible with part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.
- Cadillac: CTS (08-13), DTS (06-11), Escalade/ESV/EXT (10), SRX (07-09), STS (10)
- Chevrolet: Avalanche (10), Caprice (11-13), Captiva Sport (12), Equinox (07-09), Express Van (08-12), Impala (06-13), Monte Carlo (06-07), Suburban (10), Tahoe (10), Traverse (09-12)
- GMC: Acadia (07-12), Savana Van (08-12), Yukon / Yukon XL (10)
- Buick: Enclave (08-12), Lucerne (06-11)
- Hummer: H2 (08-09)
- Pontiac: G8 (08-09), Torrent (07-09)
- Saturn: Outlook (07-10), Vue (08-10)
Frequently Asked Questions
Why do you need my VIN number?
Your Vehicle Identification Number (VIN) is essential because it allows us to program the BCM with the specific software and vehicle options that match your 2010 Yukon exactly. This ensures all features work correctly and avoids conflicts with other modules.
Is this BCM difficult to install?
The physical installation is straightforward for most DIYers with basic tools. However, post-installation procedures like the airbag key setup and brake sensor calibration require a professional-grade diagnostic tool. We handle the initial programming to make the process much simpler than starting with a blank module from a dealer.
Will this fix my ‘Service Airbag’ light?
If the light is on due to a faulty BCM, this part will be the core of the fix. However, after installing the new BCM, you MUST perform the ‘Setup SDM Primary Key in BCM’ procedure with a proper scan tool to re-establish communication with the airbag module and turn off the light.
What happens if I don’t provide a VIN?
We cannot ship the module without a VIN. The programming is a critical part of the service we provide, ensuring the part works correctly in your specific vehicle. The order will be held until a VIN is provided.
Does this part come with a warranty?
Yes, all our electronic modules come with a warranty that covers defects in the part itself. Please refer to our warranty policy page for complete details and duration.