Restore Your Monte Carlo’s Electrical Health
If you’re dealing with baffling electrical issues in your 2006-2007 Chevrolet Monte Carlo—like power accessories going haywire, a persistent security light, or a frustrating no-start condition—the Body Control Module (BCM) is often the culprit. As a technician with over two decades of experience, I’ve seen how a failing BCM can turn a reliable car into a source of constant headaches. It’s the central hub for your car’s body electronics, and when it falters, chaos ensues. This isn’t just an inconvenience; it can affect safety systems and leave you stranded.
We offer a dependable and straightforward solution. This Body Control Module, part number 25934762, is the correct replacement for your vehicle. The best part? We take care of the most complicated step for you. Before this BCM ever leaves our facility, we program it with the latest GM software updates, specifically flashed to your car’s unique Vehicle Identification Number (VIN). This means you can skip the expensive trip to the dealership for programming. You get a part that’s ready for installation right out of the box, designed to restore function and get you back on the road with confidence.
From the Diagnostic Bay: A Classic BCM Failure
Just last month, a 2007 Monte Carlo SS was towed to my shop. The owner was at his wit’s end. The radio would randomly shut off, the power locks had a mind of their own, and worst of all, the car would intermittently refuse to start, just flashing the ‘Security’ light on the dash. He had already replaced the battery and checked the ignition switch. After connecting my scan tool, I found a slew of ‘U’ codes (U0140, U0155), indicating a loss of communication between modules. This is a classic sign of a failing BCM. Instead of a costly diagnostic path, we confirmed power and ground at the BCM connector were good, pointing directly to an internal failure of the module itself. A pre-programmed 2006-2007 Monte Carlo BCM like this one had him back on the road in under an hour, with all symptoms resolved.
Is Your Monte Carlo Showing These Telltale Signs?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ The anti-theft or security light stays on, preventing the engine from starting.
- ✔ Flickering or inoperative interior dome lights, exterior lights, or dashboard illumination.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Diagnostic trouble codes (DTCs) related to loss of communication, such as U0140, U0151, or other U-codes.
- ✔ Wipers activating on their own or not turning on when commanded.
A Straightforward Guide to Your BCM Installation
For the confident DIYer, replacing the 2006-2007 Monte Carlo BCM is a manageable job. The unit is typically located behind the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your car’s battery and wait a few minutes before beginning work.
- Locate the Module: Remove the lower dash panel (knee bolster) below the steering wheel to gain access to the BCM.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New BCM: Mount the new, pre-programmed BCM in place of the old one and securely reconnect all electrical connectors.
- Reconnect Power: Re-attach the negative battery terminal.
- Perform Final Steps: Follow the crucial post-installation procedures outlined below to ensure all systems, including safety features, function correctly.
CRITICAL: Post-Installation Procedures
After installing your new 2006-2007 Monte Carlo BCM, a few final steps are necessary to ensure full system integration and safety. These procedures sync the new module with other components in your vehicle.
- Airbag System Reset: The airbag warning light will likely be illuminated after replacement. You must perform the ‘Setup SDM Primary Key in BCM’ procedure using a compatible professional-grade scan tool. This re-establishes the security handshake between the BCM and the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Sensor Relearn: Some vehicles require a recalibration of the Brake Pedal Position (BPP) sensor. This ensures the brake lights and stability control systems receive accurate input. This is also performed with a high-level scan tool.
Note: If you are not equipped or comfortable with performing these relearn procedures, a professional mechanic can complete them for you quickly after you’ve installed the part.
Verified Vehicle Compatibility
This BCM is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers, ensuring a perfect fit. Please verify your vehicle is on this list. This module replaces the following 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.
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
CAPRICE 11-13 Body Control (BCM)
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435, 20921436, or 22860591
CTS 08-13 Body Control (BCM); LH dash
DTS 06-11 Body Control (BCM); (RH center dash)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
EQUINOX 07-09 Body Control (BCM); (center dash)
ESCALADE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25892622
EXPRESS/SAVANA VANS 08-12 Body Control (BCM)
G8 08-09 Body Control (BCM); (center dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
IMPALA 06-13 Body Control (BCM); (LH dash)
LUCERNE 06-11 Body Control (BCM); (right side dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SRX 07-09 Body Control (BCM); LH dash
STS 10 Body Control (BCM); center dash
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TAHOE 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
TORRENT 07-09 Body Control (BCM); (center dash)
TRAVERSE 09-12 Body Control (BCM); (LH dash)
VUE 08-10 Body Control (BCM); (center dash)
YUKON 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898 or 25892622
Frequently Asked Questions
Why do you need my VIN to sell me this part?
Your Vehicle Identification Number (VIN) is essential because it allows us to program the Body Control Module with the specific software and settings for your Monte Carlo’s exact configuration. This ensures all features work correctly and makes the installation process much simpler, avoiding a mandatory trip to the dealer.
Is this a difficult part to replace myself?
For someone with basic mechanical skills and tools, this is a very manageable repair. The main challenge is accessing the module under the dashboard. Our installation guide above provides the key steps. The most critical part is ensuring the post-installation relearn procedures are completed.
What happens if I don’t do the airbag and brake sensor resets?
If you skip the ‘Setup SDM Primary Key’ procedure, the airbag warning light will remain on, and the supplemental restraint system (airbags) will be inoperative. Not performing the brake pedal sensor relearn can lead to incorrect brake light operation or issues with the vehicle’s stability control system.
Will this fix my car’s security light and no-start problem?
In a vast majority of cases, yes. The BCM is a core component of the Pass-Key III/Passlock anti-theft system. When it fails, it can’t verify the key, triggering the security light and disabling the starter. A new, correctly programmed BCM directly resolves this common issue.
How do I find the BCM in my 2006-2007 Monte Carlo?
In the 06-07 Monte Carlo, the BCM is located on the driver’s side, up under the dashboard, typically attached to a bracket near the steering column. You will need to remove the plastic knee bolster panel below the steering wheel for access.