Restore Full Electrical Function to Your Monte Carlo
Are you chasing down frustrating electrical gremlins in your 2006 or 2007 Chevrolet Monte Carlo? Intermittent power windows, a security light that won’t turn off, or a key fob that works one minute and not the next are classic signs of a failing Body Control Module (BCM). As a technician with over two decades of diagnostic experience, I’ve seen how a faulty BCM can turn a reliable car into a source of daily frustration. This isn’t just an inconvenience; it’s a core system failure that can affect everything from your interior lights to your vehicle’s starting ability.
This replacement Body Control Module, part number 25826125, is the definitive solution. We take the guesswork and extra cost out of the repair by pre-programming the module to your vehicle’s specific VIN before we ship it. This means no expensive trips to the dealership for programming. You get a part that’s loaded with the latest GM software updates, ready for a straightforward installation. This is the same process we use in our shop to guarantee a reliable, long-term fix.
Common Signs of a Failing Body Control Module
- ✔ Erratic or non-functional power windows, door locks, or interior lights.
- ✔ The security or anti-theft light stays on, potentially causing a no-start condition.
- ✔ Key fobs or remote entry stop working reliably.
- ✔ Dashboard gauges behaving strangely or providing incorrect readings.
- ✔ Communication error codes, such as U0140, stored in the vehicle’s computer system.
- ✔ Horn honking unexpectedly or not working at all.
From the Diagnostic Bay: A Monte Carlo’s Ghost in the Machine
A customer brought in his 2006 Monte Carlo last month with a truly bizarre set of symptoms. The radio would switch on and off by itself, the driver’s side window had a mind of its own, and occasionally the car wouldn’t start, with the security light flashing on the dash. He had already replaced the battery and checked all the fuses. After connecting my scan tool, I found a handful of ‘lost communication’ codes all pointing back to one culprit. It was a classic case of internal BCM failure. Instead of a costly dealer visit, we installed one of our VIN-programmed modules. The entire job took less than an hour, and all the ‘ghosts’ in his machine were gone for good. It’s a rewarding fix because it solves so many problems at once.
DIY-Friendly Installation Guide
For the confident DIYer, replacing the BCM in your Monte Carlo is a manageable job. The BCM is typically located on the left (driver’s) side of the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before starting work.
- Locate the BCM: On the 2006-2007 Monte Carlo, you’ll find the BCM attached to the left side of the steering column, often behind a lower dash panel. You may need to remove this panel for access.
- Disconnect Connectors: Carefully unplug all electrical connectors from the old BCM. They have release tabs that need to be pressed. Do not force them.
- Remove the Old Module: Unbolt or unclip the old BCM from its mounting bracket and remove it from the vehicle.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely plug in all the electrical connectors.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Relearn Procedures: Follow the critical post-installation steps below to ensure all systems, including safety features, are operating correctly.
Important: Post-Installation Procedures
After installing your new 2006-2007 Monte Carlo BCM, a few final steps are required to ensure full system integration and safety. These are not optional and must be performed with a compatible high-end scan tool.
- Airbag System Reset: To clear the airbag warning light and ensure the system is active, you must perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the BCM with the airbag control module.
- Brake Pedal Position Sensor Relearn: Some vehicles require a recalibration of the brake pedal position sensor. This is vital for the proper function of traction control, stability control, and cruise control systems.
Verified Vehicle Compatibility List
This module is a direct fit for a wide range of GM vehicles. Please match your part number or vehicle model from the list below. This module is a compatible replacement for 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 (under steering column), ID 25892622
CAPRICE 11-13
CAPTIVA SPORT 12 (center dash), ID 20921435, 20921436, or 22860591
CTS 08 (RH dash)
CTS 08-13 (LH dash)
DTS 06-11 (RH center dash)
ENCLAVE 08-12 (LH dash)
EQUINOX 07-09 (center dash)
ESCALADE 10 (under steering column), ID 20815898 or 25892622
ESCALADE ESV 10 (under steering column), ID 20815898 or 25892622
ESCALADE EXT 10 (under steering column), ID 25892622
EXPRESS 1500 VAN 08-12 (center dash)
EXPRESS 2500 VAN 08-12 (center dash)
EXPRESS 3500 VAN 08-12 (center dash)
G8 08-09 (center dash)
HUMMER H2 08-09 (LH firewall)
IMPALA 06-12 (LH dash)
IMPALA 13 (LH dash), ID 22820315
LUCERNE 06-11 (right side dash)
MONTE CARLO 06-07 (LH steering column)
OUTLOOK 07-10 (center dash)
SAVANA 1500 VAN 08-12 (center dash)
SAVANA 2500 VAN 08-12 (center dash)
SAVANA 3500 VAN 08-12 (center dash)
SRX 07-09 (LH dash)
STS 10 (center dash)
SUBURBAN 1500 10 (under steering column), ID 20815898 or 25892622
TAHOE 10 (under steering column), ID 20815898 or 25892622
TORRENT 07-09 (center dash)
TRAVERSE 09-12 (LH dash)
VUE 08-10 (center dash)
YUKON 10 (under steering column), ID 20815898 or 25892622
YUKON XL 1500 10 (under steering column), ID 20815898 or 25892622
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, providing your Vehicle Identification Number (VIN) is essential. We use it to load the correct, vehicle-specific software and updates from GM onto your module. This ensures compatibility and proper function of all your vehicle’s features.
Is this a plug-and-play part?
Because we program it to your VIN, it is as close to plug-and-play as possible. However, as noted above, you will need a scan tool to perform the ‘Setup SDM Primary Key’ and potentially a ‘Brake Pedal Position Sensor Relearn’ to restore full functionality and clear safety lights.
Will this fix my ‘Service Theft System’ message?
In many cases, yes. The BCM is a critical part of the Passlock/Passkey anti-theft system. A failing BCM is a very common cause of this warning message and related starting issues.
What tools do I need for the installation?
Basic hand tools like a socket set and screwdrivers are usually all that’s needed for the physical installation. However, you will need access to a bi-directional professional scan tool for the required post-installation relearn procedures.
What if my original part number is not 25826125 but is on the list?
The part numbers listed are all interchangeable. GM often supersedes part numbers over time. As long as your original part number is in our compatibility list, this module will function as a direct replacement once programmed to your VIN.