Restore Your Truck’s Electrical System with a Plug-and-Play BCM
Are you chasing down bizarre electrical issues in your GM truck or SUV? Flickering lights, power windows with a mind of their own, or a security light that won’t turn off are classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s comfort and security features. When it starts to fail, it can make your reliable truck feel haunted. Stop throwing parts at the problem. This is the direct, reliable solution you’ve been looking for.
As a technician with two decades of experience, I’ve seen how a faulty BCM can cause symptoms that mimic a dozen other problems, leading to frustrating and expensive misdiagnoses. That’s why we offer this fully programmed Body Control Module. We take the guesswork and the dealership-level expense out of the equation. Simply provide us with your vehicle’s VIN during checkout, and our experts will flash this module with the latest GM software specific to your truck. It arrives at your door ready for installation, saving you hundreds in programming fees.
From the Diagnostic Bay: The Case of the Ghostly Gremlins
A customer brought in his 2000 Silverado with a list of complaints that sounded like a poltergeist had taken up residence in his dashboard. The interior lights would pulse, the radio would cut out, and sometimes the power locks would cycle on their own while driving. He’d already replaced the battery and alternator to no avail. After hooking up my scan tool, I noticed several communication error codes (U-codes) between various modules. This pointed away from a single component and towards the central hub: the BCM. A failing BCM can disrupt the entire data network, causing these seemingly unrelated issues. We installed a VIN-programmed module, and just like that, the ghosts were gone. The truck was back to being a solid, predictable workhorse.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ The security system acting up, or the vehicle not starting due to a security fault (Passlock issues).
- ✔ Horn sounding unexpectedly or not working at all.
- ✔ Intermittent wiper operation.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors (like U1000) or BCM internal faults (like B1001).
- ✔ A parasitic battery drain that leaves you with a dead battery overnight.
Your Straightforward BCM Installation Guide
Installing your new 2000 Yukon XL 1500 BCM is a manageable job for a DIYer with basic tools. It’s typically located under the driver’s side of the dashboard.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the BCM: On most of these GM trucks and SUVs, you’ll find the BCM mounted to the left of the steering column, often behind a lower dash panel.
- Remove Connectors: Carefully unplug the multiple wiring harness connectors from the old module. They have locking tabs that need to be depressed to be released. Do not force them.
- Swap the Module: Unbolt or unclip the old BCM from its mounting bracket and set it aside. Mount the new module in its place.
- Reconnect Everything: Plug the wiring harnesses securely into the new BCM. You should hear a click as they lock into place. Reconnect the negative battery terminal.
- Test Functionality: Start the vehicle and test your lights, locks, windows, and other accessories to ensure everything is working as it should.
Important Post-Installation Steps
While this module is programmed for your VIN, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following potential procedures:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure your brake lights and traction control system function correctly.
- No Core Charge: You can keep your old module! There is absolutely no core charge or need to return your original part.
Disclaimer: Always consult a factory service manual or a qualified technician if you are unsure about any step. Vehicle systems can vary.
Verified Vehicle Compatibility
This module is a direct replacement for service numbers 19208539, 9371990, and 9385236. It is guaranteed to fit the following models with the specified options:
- ASTRO 01 Body Control (BCM); (LH dash)
- BLAZER S10/JIMMY S15 01 Body Control (BCM); (center dash), ID 9385236
- BRAVADA 01 Body Control (BCM); (center dash)
- S10/S15/SONOMA 01 Body Control (BCM); (center dash)
- SAFARI (GMC) 01 Body Control (BCM); (LH dash)
- SIERRA 1500 PICKUP 00 Body Control (BCM); (LH dash), ID 9371990 or 9385236
- SIERRA 2500 PICKUP 00 Body Control (BCM); (LH dash), ID 9385236
- SILVERADO 1500 PICKUP 00 Body Control (BCM); (LH dash), ID 9371990 or 9385236
- SILVERADO 2500 PICKUP 00 Body Control (BCM); (LH dash), ID 9385236
- SUBURBAN 1500 00 Body Control (BCM); (LH dash), ID 9385236
- SUBURBAN 2500 00 Body Control (BCM); (LH dash), ID 9385236
- TAHOE 00 Body Control (BCM); (LH dash), ID 9385236
- YUKON 00 Body Control (BCM); exc. Denali; (LH dash), ID 9385236
- YUKON XL 1500 00 Body Control (BCM); (LH dash), ID 9385236
- YUKON XL 2500 00 Body Control (BCM); (LH dash), ID 9385236
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and settings your vehicle had when it left the factory, plus any available GM updates. This ensures all your specific options work correctly and makes the installation process much simpler.
Do I need to return my old BCM?
No. This purchase comes with no core charge. You can keep your old part, which can be helpful for cross-referencing part numbers if needed.
What tools are needed for the post-installation procedures?
The Airbag System Sync and Brake Pedal Position Relearn procedures require a professional-grade bidirectional scan tool, like a Tech 2 or equivalent. Most DIY code readers cannot perform these functions. If needed, a local repair shop can perform these relearns for you.
How can I be sure this is the right part for my truck?
Match the service number on your original BCM to one of the compatible numbers listed: 19208539, 9371990, or 9385236. You can also verify fitment using the compatibility list provided above. This 2000 Yukon XL 1500 BCM is a common part for many GM vehicles of this era.
Will this fix my ‘Service 4WD’ light?
A failing BCM can sometimes cause erroneous warning lights due to communication network issues. However, a ‘Service 4WD’ message is more commonly caused by the transfer case control module (TCCM), the encoder motor, or the dash switch. Proper diagnosis is key.