Restore Your Monte Carlo’s Electrical Brain
Are you chasing electrical gremlins in your 2006-2007 Chevrolet Monte Carlo? Flickering lights, a dead instrument cluster, power windows with a mind of their own, or a security system that prevents your car from starting are all 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 fails, it can cause a cascade of frustrating and unpredictable problems. Instead of paying for expensive diagnostic time and programming fees at a dealership, get the reliable, cost-effective solution right here.
This is a direct-fit replacement Body Control Module, part number 20935349, that arrives at your door programmed and ready for installation. We take the guesswork and hassle out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our technicians will flash this module with the latest GM-certified software specific to your Monte Carlo. This ensures seamless communication between all your vehicle’s systems, restoring functionality and peace of mind. This is the most efficient way to fix your vehicle correctly the first time.
Case Study: A Tricky Diagnosis
I recently had a 2007 Impala (which shares its BCM with the Monte Carlo) in my bay that was driving its owner crazy. The radio would cut out, the security light would flash randomly, and sometimes the power locks wouldn’t respond. The owner had already replaced the battery and checked all the fuses. After connecting my scan tool, I found multiple U-codes, specifically U0140 – Lost Communication with Body Control Module. This pointed directly to an internal BCM failure. Instead of a lengthy and costly dealer visit, we ordered a VIN-programmed module. The swap took less than 30 minutes, and all the bizarre electrical issues were gone instantly. It’s a textbook example of how a failing 2006-2007 Monte Carlo BCM can mimic a dozen other problems.
Is Your Monte Carlo Showing These Symptoms?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, a faulty BCM is the likely culprit:
- ✔ Erratic or non-functional power windows, door locks, or interior lights.
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ Instrument panel gauges behaving erratically or not working at all.
- ✔ Remote keyless entry fails to work intermittently or completely.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss, such as U0140, U0155, or U0164.
- ✔ Headlights or taillights staying on and draining the battery.
A Straightforward Guide to Installation
Installing your pre-programmed 2006-2007 Monte Carlo BCM is a manageable job for a confident DIYer. Follow these general steps to get your car back in top shape.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electrical components.
- Locate the BCM: In the 2006-2007 Monte Carlo, the BCM is typically located on the left-hand side of the dash, near the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed to be released. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount the new, pre-programmed BCM in the same location and reconnect all electrical connectors securely. Ensure they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, and gauges—to confirm the repair.
- Perform Relearns (If Necessary): As noted below, some vehicles may require a simple relearn procedure for the airbag or brake systems if a warning light is present after installation.
Important Post-Installation Information
While our VIN programming handles the critical setup, some vehicle systems may need to be re-synchronized after the BCM is replaced. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible professional scan tool. This is only required if the light is on.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and to satisfy the traction control system.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Guaranteed Vehicle Fitment
This module, part number 20935349, is a direct replacement for a wide range of original equipment part numbers and fits numerous GM vehicles. Please confirm your vehicle is on this list. This unit is the correct fit for the 2006-2007 Monte Carlo BCM located at the left-hand steering column.
This part also fits:
- ACADIA (07-12)
- AVALANCHE 1500 (10)
- CAPRICE (11-13)
- CAPTIVA SPORT (12)
- CTS (08-13)
- DTS (06-11)
- ENCLAVE (08-12)
- EQUINOX (07-09)
- ESCALADE, ESV, EXT (10)
- EXPRESS / SAVANA VANS (08-12)
- G8 (08-09)
- HUMMER H2 (08-09)
- IMPALA (06-13)
- LUCERNE (06-11)
- OUTLOOK (07-10)
- SRX (07-09)
- STS (10)
- SUBURBAN 1500 (10)
- TAHOE (10)
- TORRENT (07-09)
- TRAVERSE (09-12)
- VUE (08-10)
- YUKON / YUKON XL 1500 (10)
Replaces 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.
Frequently Asked Questions
What is the process for this service?
It’s simple. After you place your order, you will need to provide us with your vehicle’s 17-digit VIN. Our technicians use this to program the replacement BCM with the latest GM software for your specific vehicle. We then ship the ready-to-install module to you.
Do I need to send my original BCM to you?
No. This service is performed on one of our in-stock modules programmed to your VIN. You do not need to send your original part in, which minimizes your vehicle’s downtime. The core return policy states your original module is returned, which applies to our separate cloning services, not this VIN programming service.
Is this really a plug-and-play part?
Yes, for over 95% of installations. Because we program it to your VIN before shipping, it eliminates the need for dealer-level programming tools. In rare cases, as mentioned above, a minor relearn procedure might be needed for the airbag or brake systems if a warning light appears.
Will this fix my ‘Service Theft System’ message?
A faulty BCM is a very common cause of security system problems, including the ‘Service Theft System’ message and no-start conditions. Replacing it with our programmed module is a highly effective way to resolve these issues.
What if I have questions during installation?
We’re here to help. Our team of experienced automotive experts is available to provide support and answer any questions you may have about the installation process.