Are you chasing electrical gremlins 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). As the central command for your vehicle’s body electronics, a faulty BCM can cause a host of frustrating and seemingly unrelated issues. Stop throwing parts at the problem. This is the direct, reliable solution to restore full functionality to your vehicle.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a quality-tested BCM, load it with the latest official GM software updates, and then program it specifically to your vehicle’s VIN before it leaves our facility. This means you can skip the expensive trip to the dealership for programming. For the DIY mechanic or the professional shop, this saves critical time and money, turning a complex electronic repair into a manageable component swap.
A Technician’s Notebook: The Haunted 2000 Sierra
I had a 2000 Sierra 1500 in my bay last month that was driving the owner crazy. The dome lights would stay on, the radio would randomly shut off, and the power locks worked intermittently. He’d already replaced the battery and checked all the fuses. A quick scan showed a handful of U-codes, indicating a communication breakdown on the data bus. This is a tell-tale sign. The BCM is the traffic cop for these signals, and when it fails, chaos ensues. We installed one of our pre-programmed BCMs, and in under an hour, every single symptom was gone. It’s a satisfying fix because it solves so many problems at once.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty BCM is the likely culprit. A failing module can often set communication codes like U0140, U0155, or other B-series (Body) codes.
- ✔ Erratic or non-functional power windows, door locks, and mirrors
- ✔ Interior or exterior lights flickering, staying on, or not working at all
- ✔ The security or anti-theft light staying illuminated, preventing the engine from starting
- ✔ Horn sounding unexpectedly or not working when pressed
- ✔ Wipers operating incorrectly or activating on their own
- ✔ Inaccurate gauge readings on the instrument cluster
A Straightforward Guide to BCM Installation
Installing your pre-programmed 2000 Yukon XL 2500 BCM is a direct process. While the exact location can vary slightly by model (typically under the driver’s side dash), the steps are generally consistent.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On most full-size trucks and SUVs from this era, the BCM is located under the driver’s side of the dashboard, often near the steering column.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed module in the same location and securely reconnect all electrical harnesses. Ensure they click into place.
- Reconnect Power: Re-attach the negative battery terminal.
- Perform Final Checks: Start the vehicle and test all body functions—windows, locks, lights, wipers, etc. Note the post-installation procedures below, as some may be required.
Important Post-Installation Steps
Because this module is central to multiple vehicle systems, a few additional steps may be necessary after installation. Please be aware of these potential requirements:
- Airbag System Sync: If your airbag warning light is on after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is needed. This syncs the new BCM with the airbag system and requires a professional-grade diagnostic tool.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be required to ensure your brake lights and traction control system function correctly. This also requires a compatible scan tool.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step of the process.
Verified Vehicle Compatibility
This module is a direct fit for the following vehicles and options, matching part numbers 09371990, 19208539, and 9385236. Please provide your VIN upon purchase to ensure perfect programming.
- ✔ 2000 GMC YUKON XL 2500 (Body Control, LH dash, ID 9385236)
- ✔ 2000 CHEVROLET SILVERADO 2500 PICKUP (Body Control, LH dash, ID 9385236)
- ✔ 2001 CHEVROLET S10/S15/SONOMA (Body Control, center dash)
- ✔ 2001 CHEVROLET BLAZER S10/JIMMY S15 (Body Control, center dash, ID 9385236)
- ✔ 2001 GMC SAFARI (Body Control, LH dash)
- ✔ 2000 CHEVROLET SUBURBAN 1500 (Body Control, LH dash, ID 9385236)
- ✔ 2000 GMC YUKON XL 1500 (Body Control, LH dash, ID 9385236)
- ✔ 2000 CHEVROLET TAHOE (Body Control, LH dash, ID 9385236)
- ✔ 2001 OLDSMOBILE BRAVADA (Body Control, center dash)
- ✔ 2000 CHEVROLET SILVERADO 1500 PICKUP (Body Control, LH dash, ID 9371990 or 9385236)
- ✔ 2000 CHEVROLET SUBURBAN 2500 (Body Control, LH dash, ID 9385236)
- ✔ 2000 GMC SIERRA 1500 PICKUP (Body Control, LH dash, ID 9371990 or 9385236)
- ✔ 2000 GMC SIERRA 2500 PICKUP (Body Control, LH dash, ID 9385236)
- ✔ 2001 CHEVROLET ASTRO (Body Control, LH dash)
- ✔ 2000 GMC YUKON (exc. Denali, Body Control, LH dash, ID 9385236)
Frequently Asked Questions
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
Is this BCM truly plug-and-play?
Yes, it comes programmed to your VIN. The installation is a direct swap of the part. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake systems with a scan tool after installation.
What information do you need from me?
After you complete your purchase, we will need your 17-digit Vehicle Identification Number (VIN) to program the module correctly for your specific vehicle’s options.
Will this fix my ‘Service 4WD’ light?
While a BCM can cause a wide range of issues, problems with the 4WD system are more commonly related to the Transfer Case Control Module (TCCM) or the encoder motor. It’s best to diagnose the specific codes before ordering.
What if the airbag light comes on after I install it?
This is not a sign of a defective part. It simply means the new BCM needs to be electronically ‘introduced’ to the airbag system (SDM). A repair shop with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
How do I know if my BCM is the problem?
The most reliable way is with a professional diagnosis. However, if you have multiple, unrelated electrical issues like the ones listed in our symptoms section, the BCM is a very strong possibility. This is especially true for a 2000 Yukon XL 2500 BCM and related GM platforms.