Fix Your Truck’s Electrical Gremlins for Good
Is your GMC Sierra or another GM truck acting possessed? Flickering lights, a dead HVAC system, or random warning messages on the dash are classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, when the BCM goes bad, it can cause a cascade of frustrating and hard-to-diagnose problems. This OEM-quality module, part number 22860591, is the definitive solution, and our unique cloning service makes the repair easier and more affordable than ever.
We transfer all the critical data from your original module to this replacement unit. This means it arrives at your door ready for a true plug-and-play installation, perfectly matched to your truck’s specific features and VIN. You get to skip the expensive trip to the dealership for programming, saving you time and hundreds of dollars. This is the most efficient way to restore full functionality to your vehicle’s power windows, door locks, security system, wipers, and lighting.
A Technician’s Notebook: The Grounding Goose Chase
I remember a 2013 Sierra 3500 HD that came into the shop with a laundry list of intermittent issues: the radio would cut out, the dome light would stay on, and the driver’s power window worked only when it wanted to. The owner had already replaced the battery and checked all the main ground straps. We spent hours chasing what we thought was a wiring problem. After checking every pin and connector, we finally swapped in a known-good BCM. Instantly, every problem vanished. The original BCM had failed internally, creating phantom grounding issues. This experience, repeated over my 20+ years, proves that a faulty BCM can mimic a dozen other problems. Replacing it with a properly cloned unit is often the fastest and most reliable fix.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, your Body Control Module is the likely culprit. This is especially true if you see diagnostic trouble codes like B1001.
- ✔ The HVAC blower motor is dead or works intermittently.
- ✔ Your airbag warning light is illuminated on the dashboard.
- ✔ Power windows, door locks, or exterior lights fail to operate correctly.
- ✔ The anti-theft or security system malfunctions, potentially causing no-start conditions.
- ✔ Unexplained stalling, misfires, or other strange electrical behavior.
- ✔ A cluster of seemingly unrelated body-related DTCs are stored in the system.
Your 5-Minute Installation Guide
Thanks to our cloning service, installing your replacement 2013 Sierra 3500 BCM is a straightforward job for any DIYer. No special programming tools are required for the basic installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the BCM: On most GM trucks and SUVs, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s often a black box with several large electrical connectors.
- Swap the Module: Carefully unplug the electrical connectors from your old BCM. Unbolt or unclip the module from its mounting bracket and remove it. Install the new module in its place and securely reconnect all electrical plugs.
- Reconnect Power: Re-attach the negative battery terminal.
- Post-Installation Checks: Start the vehicle and verify that all functions (lights, windows, locks, etc.) are working properly. Note that your original module will be returned to you with the replacement; we do not keep cores.
Important Note on Post-Installation Procedures: In some cases, additional steps may be needed. If the airbag light remains on, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ function. Some models may also require a ‘Brake Pedal Position Relearn’ procedure. Always consult a factory service manual for vehicle-specific instructions.
Verified Fitment For These GM Models
This module is a direct replacement for part number 22860591 and is interchangeable with a wide range of other GM part numbers, including 25844480, 25835966, 15943678, 20939137, and more. It fits an extensive list of 2007-2013 General Motors trucks and SUVs. Please verify your vehicle is on the list below.
ESCALADE ESV 07-11
ESCALADE EXT 07-11
AVALANCHE 1500 07-11
SIERRA 1500 PICKUP 07-11
SIERRA 2500 PICKUP 07-13
SIERRA 3500 PICKUP 07-13
SIERRA DENALI 07-11
SIERRA DENALI 2500 11-13
SIERRA DENALI 3500 11-13
SILVERADO 1500 PICKUP 07-11
SILVERADO 2500 PICKUP 07-13
SILVERADO 3500 PICKUP 07-13
SUBURBAN 1500 07-11
SUBURBAN 2500 07-11
TAHOE 07-11
YUKON 07-11
YUKON XL 1500 07-11
YUKON XL 2500 07-11
Frequently Asked Questions
Frequently Asked Questions
What is a ‘Cloning Service’ and why do I need it?
Cloning is a process where we transfer the exact VIN-specific data and software from your original BCM to the replacement unit. This makes the new module a perfect electronic match for your truck, eliminating the need for expensive dealership programming and ensuring all your vehicle’s options work correctly out of the box.
Will this fix my 2013 Sierra 3500 BCM problems?
If your truck is exhibiting common symptoms like erratic lights, non-functional power accessories, or HVAC issues, this module is the most common and effective solution. It is designed to resolve the typical electronic failures associated with the original BCM.
Do I need special tools to install this BCM?
For the physical swap, you typically only need basic hand tools to access the module under the dash. No programming tools are needed. However, as noted, a professional scan tool may be required for post-install procedures like syncing the airbag system if the warning light appears.
Is there a core charge for my old part?
No, there is no core charge. We provide our cloning service and then ship your original module back to you along with the ready-to-install replacement. You get to keep your old part.
What if my part number is slightly different?
This module, 22860591, is interchangeable with many other GM part numbers for this platform (like 25844480, 25835966, etc.). As long as your vehicle model and year are on our compatibility list, this module will function correctly in your truck.