Restore Your Cadillac’s Electrical System with a Hassle-Free Solution
If you’re dealing with bizarre electrical issues in your 2008-2013 Cadillac CTS—like power windows with a mind of their own, flickering interior lights, a security system that won’t cooperate, or even a frustrating no-start condition—the Body Control Module (BCM) is the most likely culprit. As the central command center for your vehicle’s body electronics, a failing BCM can create a cascade of confusing and annoying problems. For years in my shop, I’ve seen customers spend hundreds, sometimes thousands, chasing these electrical gremlins, only to find the solution was a faulty BCM all along.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We utilize a professional Cloning Service that makes this repair straightforward for both DIY enthusiasts and professional technicians. Instead of you needing to pay for expensive dealership programming, we transfer the critical data from your original BCM directly to this replacement unit. This ensures that all your vehicle’s specific options and security information are perfectly matched, making the installation process as simple as swapping the modules. This is the most reliable way to get a fully functional 2008-2013 CTS Body Control Module without the typical dealership headaches.
A Technician’s Notebook: The CTS with a Ghost
A 2011 CTS came into the bay with a laundry list of complaints from the owner. The radio would randomly turn off, the driver’s side power seat would stop working, and the key fob would only work intermittently. There were no check engine lights, just a handful of communication codes (U-codes) that pointed everywhere and nowhere. After verifying the primary power and ground circuits were solid, experience pointed me straight to the BCM. These modules, located on the left side of the dash, are susceptible to voltage spikes and internal circuit board failure over time. We performed our cloning service onto a replacement unit, and within an hour of installation, every single ghost-like electrical issue was gone. It’s a classic failure pattern for these cars.
Is Your Cadillac Showing These BCM Failure Signs?
- ✔ Intermittent or non-functional power windows, locks, or mirrors.
- ✔ Erratic interior or exterior lighting behavior (flickering, staying on, or not turning on).
- ✔ The security system acting up, causing no-start or key fob recognition issues.
- ✔ Instrument cluster warning lights appearing randomly (e.g., Service Theft System).
- ✔ Communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or other U-codes, indicating a loss of communication with the BCM.
- ✔ Wipers or radio turning on or off by themselves.
Your Straightforward BCM Installation Guide
Installing your cloned 2008-2013 CTS Body Control Module is designed to be a direct swap. Here is a general guide to get you started:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On the 2008-2013 Cadillac CTS, the BCM is typically located on the left (driver’s) side of the dashboard, often behind the lower dash panel or near the steering column.
- Remove Trim Panels: Carefully remove any plastic trim panels necessary to access the module. These are usually held in with clips or small screws.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be pressed to release. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely plug in all the electrical connectors. You should hear a ‘click’ as they lock into place.
- Post-Installation Steps: Reassemble the dash panels and reconnect the negative battery terminal. Start the vehicle and test all body functions (lights, windows, locks, etc.). Please note the important procedures below.
Important Post-Installation Information
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a relearn procedure after the BCM is replaced and the battery is reconnected. This is normal.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be done with a bi-directional scan tool. This syncs the airbag system with the new BCM. This is only required if the light is on.
- Brake Pedal Position Relearn: Some models may require this procedure to ensure the brake lights and traction control system function correctly. This also requires a professional-grade diagnostic tool.
Verified Fitment Across a Wide Range of GM Vehicles
This BCM, part number 15828601, is a direct replacement for a wide array of original equipment part numbers and fits many GM vehicles. Please match your part number to one in the list below or verify fitment by your vehicle model. Remember to provide your VIN upon purchase for the cloning service.
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
Compatible Models Include:
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 10
ESCALADE ESV 10
ESCALADE EXT 10
EXPRESS VANS 08-12
G8 08-09
HUMMER H2 08-09
IMPALA 06-13
LUCERNE 06-11
MONTE CARLO 06-07
OUTLOOK 07-10
SAVANA VANS 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10
TAHOE 10
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON / YUKON XL 1500 10
Note: Specific options and IDs may apply. Always verify your part number for a guaranteed match.
Frequently Asked Questions
Frequently Asked Questions
How does the cloning service work?
After you purchase, you will ship your original BCM to us. We use specialized equipment to extract the unique vehicle data and security information and flash it onto the replacement module. We then ship both your original module and the ready-to-install replacement back to you.
Do I need to take my car to the dealer after installation?
No! The primary benefit of our cloning service is that it eliminates the need for dealership programming. The module arrives ready to be installed. The only exception is the potential need for a relearn procedure (like for the airbag system) if a warning light appears, which can be done by most independent shops.
Is this a reliable fix for my 2008-2013 CTS Body Control Module?
Absolutely. We address the common failure points and load your vehicle’s specific data onto a fully tested module, providing a durable and dependable solution to restore your car’s functionality.
What happens if I don’t have my original module?
The cloning service requires your original module to transfer the data. If your original module is missing or completely destroyed, please contact us before purchasing to discuss other potential solutions, like programming via your vehicle’s VIN.
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on where to send your module. Please include a note with your VIN, name, and order number in the box with your part. The VIN is used to download the latest GM software updates for your specific vehicle.
What is your core policy?
We require your original BCM to perform the cloning service. Your original module will always be returned to you along with the replacement unit. We do not keep it.