Restore Your Cadillac’s Electrical System with a Plug-and-Play Solution
Is your 2008-2013 Cadillac CTS experiencing bizarre electrical issues? Flickering lights, malfunctioning power windows or locks, or a security system that has a mind of its own? These are classic signs of a failing Body Control Module (BCM), the central command center for your vehicle’s body electronics. A faulty BCM can be incredibly frustrating, turning your luxury vehicle into a source of daily headaches. In my two decades of experience, I’ve seen these modules cause some of the most confusing diagnostic chases. The good news is, there’s a straightforward, reliable fix.
This isn’t just a replacement part; it’s a complete solution. We provide a genuine GM Body Control Module, which we will professionally program to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This means no expensive trips to the dealership for programming. We load the latest GM software updates, ensuring optimal performance and resolving potential bugs from the original factory software. By installing our pre-programmed 2008-2013 CTS Body Control Module, you’re not just replacing a part—you’re restoring the precise, reliable function you expect from your Cadillac.
A Technician’s Notebook
A customer brought in his 2011 CTS complaining of intermittent issues that were driving him crazy. His driver-side window would sometimes refuse to go down, the radio would occasionally cut out, and the key fob would work sporadically. He’d already replaced the window switch and the fob battery with no luck. After connecting my scan tool, I noticed communication errors with multiple systems, all pointing back to a central hub. We swapped in a programmed BCM, and instantly, all the gremlins vanished. It’s a perfect example of how a single failing 2008-2013 CTS Body Control Module can create a cascade of seemingly unrelated problems.
Key Symptoms of a Faulty BCM
If you’re noticing any of the following, your BCM could be the culprit. A replacement is often the most direct path to a permanent fix.
- ✔ Erratic or non-functional power windows, door locks, and interior lights.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Dashboard warning lights (like the airbag or security light) staying on.
- ✔ Problems with the keyless entry or remote start systems.
- ✔ Vehicle failing to start, even with a good battery and starter.
- ✔ Wipers operating incorrectly or not turning off.
Your Step-by-Step Installation Guide
Installing your new BCM is manageable for a DIY enthusiast. Remember that while this module is pre-programmed, some vehicle systems require a ‘handshake’ with the new BCM after installation.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On the 2008-2013 Cadillac CTS, the BCM is typically located on the left-hand (driver’s) side of the dash, often behind the lower dash panel.
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. Keep track of your screws and clips.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Battery: Re-attach the negative battery terminal.
- Perform System Resets: This is a critical step. You will need a capable diagnostic scan 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 recalibration. If you are not comfortable with these procedures, professional assistance is recommended.
Confirmed Vehicle Compatibility
This module, part number 15828601, is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers. Please verify your vehicle is on this list. Upon purchase, we require your VIN to ensure perfect programming for your specific model and options.
This BCM is a direct fit 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.
Fitment Includes (but not limited to):
- Cadillac CTS (2008-2013)
- Cadillac DTS (2006-2011)
- Cadillac Escalade, ESV, EXT (2010)
- Chevrolet Impala (2006-2013)
- Chevrolet Tahoe & Suburban 1500 (2010)
- GMC Acadia (2007-2012)
- GMC Yukon & Yukon XL 1500 (2010)
- Chevrolet Express & GMC Savana Vans (Various years/engines)
- …and many other GM models as listed in the original fitment data.
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming for you before shipping. Simply provide your vehicle’s VIN at checkout, and the module will arrive ready to be installed and synchronized with your vehicle’s systems.
Why do you need my VIN?
Your VIN allows us to program the BCM with the exact software and settings for your vehicle’s specific options, such as keyless entry, security system, and lighting packages. This ensures seamless integration and proper function of all body electronics.
What tools are required for the post-installation procedures?
To perform the required ‘Setup SDM Primary Key’ (for the airbag system) and potentially the brake pedal recalibration, you will need a professional-grade bidirectional scan tool. Basic code readers cannot perform these functions. If you don’t have one, a local repair shop can complete these final steps for you.
Is this the right part to fix my car’s no-start issue?
A failing BCM is a common cause of no-start or intermittent starting problems, especially if the security light is on. While it’s a strong possibility, it’s always best to perform a full diagnosis, as issues with the battery, starter, or ignition switch can present similar symptoms. This 2008-2013 CTS Body Control Module is often the correct fix for security-related starting issues.
Will this fit other GM cars besides the Cadillac CTS?
Yes. This BCM is used across a wide variety of GM cars, trucks, and vans. Please check the detailed compatibility list on this page to confirm it matches your specific make, model, and year.