Restore Full Control of Your Cadillac’s Electronics
Are you dealing with baffling electrical issues in your Cadillac CTS? One moment the power windows work, the next they don’t. Perhaps the security light is flashing, your interior lights are acting possessed, or the car refuses to start intermittently. As a technician with over two decades of experience, I’ve seen these exact problems hundreds of times. The culprit is often a failing Body Control Module (BCM)—the central nervous system for your vehicle’s comfort and convenience features.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We are offering a genuine GM BCM that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ever leaves our facility. This means you can bypass the expensive and time-consuming trip to the dealership for programming. By installing our pre-programmed 2008-2013 CTS Body Control Module, you’re getting a reliable, long-term fix that restores your car’s functions to factory-perfect condition.
Is Your Cadillac Plagued by These Electrical Issues?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, a faulty BCM is the likely cause:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or dashboard lights staying on or not working at all.
- ✔ The security system acting up, causing a no-start condition.
- ✔ Horn, wipers, or radio functioning intermittently.
- ✔ False warning messages on the driver information center.
- ✔ Problems with the keyless entry or remote start system.
From the Diagnostic Bay: The Case of the Erratic CTS
A customer brought in his 2011 Cadillac CTS last month, completely frustrated. The radio would randomly change stations, the driver’s side window wouldn’t go down, and the anti-theft light would flash, preventing the car from starting about twice a week. He’d already replaced the battery and checked fuses with no luck. After connecting my scan tool, I saw multiple communication error codes pointing toward the BCM. Instead of a clear ‘BCM Failure’ code, it was a pattern of lost communication with other modules. This is a classic symptom. We installed a VIN-programmed 2008-2013 CTS Body Control Module, and within an hour, every single one of his electrical gremlins was gone. It’s a testament to how this single component can restore a vehicle’s sanity.
Your Straightforward BCM Installation Guide
Installing your new BCM is a manageable task for a confident DIYer. For the 2008-2013 CTS, the BCM is typically located on the left-hand (driver’s side) of the dashboard.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Access the Module: You will likely need to remove the lower dash panel beneath the steering column to gain access to the BCM. It’s usually held in place by a few screws or clips.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be pressed to be released. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location. Reconnect all the electrical connectors, ensuring they click securely into place.
- Final Steps & Re-Learning: Re-install the dash panel and reconnect the negative battery terminal. After installation, you must perform a couple of critical procedures. You will need a capable diagnostic tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the airbag light. Some vehicles may also require a Brake Pedal Position Sensor calibration. If you are unsure, consulting a professional technician is recommended for these final steps.
Verified Fitment for a Wide Range of GM Vehicles
While this is a direct-fit solution for the 2008-2013 Cadillac CTS, this versatile Body Control Module is also compatible with a vast array of other GM cars, trucks, and SUVs. Please verify your original part number against our list to ensure perfect compatibility.
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.
Partial Fitment List Includes:
Acadia (07-12), Avalanche (10), Caprice (11-13), Captiva Sport (12), DTS (06-11), Enclave (08-12), Equinox (07-09), Escalade (10), Express/Savana Vans (08-12), G8 (08-09), Hummer H2 (08-09), Impala (06-13), Lucerne (06-11), Monte Carlo (06-07), Outlook (07-10), SRX (07-09), STS (10), Suburban (10), Tahoe (10), Torrent (07-09), Traverse (09-12), Vue (08-10), Yukon (10), and more. Always match your part number for guaranteed fit.
Frequently Asked Questions
Do I really need to provide my VIN?
Yes, providing your 17-digit VIN is absolutely essential. We use it to program the 2008-2013 CTS Body Control Module with the correct software and vehicle-specific options, ensuring it works perfectly right out of the box.
Will this fix my car’s security light and no-start problem?
In many cases, yes. The BCM is a key part of the vehicle’s anti-theft (Passlock/Passkey) system. A faulty BCM is a very common reason for security-related starting issues. This programmed module will restore that functionality.
What tools are required for the post-installation procedures?
To reset the airbag light (Setup SDM Primary Key) and perform the brake pedal calibration, you will need a high-level, bi-directional diagnostic scan tool like a GM Tech 2, MDI, or a comparable professional-grade scanner. Basic code readers cannot perform these functions.
Is this a new or used part?
This is a high-quality, tested, and guaranteed functional replacement part that has been programmed with the latest GM software for your vehicle. It provides a reliable and cost-effective solution to a new part from the dealer.
What happens if I don’t perform the airbag or brake relearn procedures?
The vehicle may still run, but you will have a persistent airbag warning light on your dash, meaning the SRS system is inactive. The brake lights may not function correctly, and stability control could be affected if the brake pedal sensor is not recalibrated. These steps are critical for safety.