Is Your Cadillac Experiencing Strange Electrical Problems?
The Body Control Module, or BCM, is the central command center for your vehicle’s electronic accessories. It manages everything from your power windows and door locks to the interior lights, security system, and even the windshield wipers. When the BCM starts to fail in your 2008-2013 Cadillac CTS, it can cause a cascade of confusing and frustrating electrical gremlins that are often difficult to diagnose. You might notice flickering lights, malfunctioning gauges, or features that work intermittently. These aren’t just annoyances; they can be signs of a critical component failure.
From the Diagnostic Bay
We once had a 2011 CTS come into the shop with a list of complaints that seemed completely unrelated. The dome light would stay on, the driver’s side window wouldn’t go down, and the key fob would only work sporadically. The owner had already replaced the battery and checked fuses with no luck. After connecting our diagnostic scanner, we saw multiple communication error codes pointing to a network issue. The culprit? A failing BCM was corrupting data on the vehicle’s network, causing all these different systems to act up. Replacing it with a VIN-programmed module cleared every single code and restored all functions perfectly. It’s a prime example of how one central module can impact the entire vehicle’s comfort and convenience systems.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not turning on).
- ✔ Malfunctioning security system or keyless entry.
- ✔ Dashboard warning lights appearing for no reason (e.g., ABS, Airbag, Traction Control).
- ✔ Windshield wipers or climate control system operating incorrectly.
- ✔ Communication errors when a diagnostic scan tool is connected.
- ✔ Battery drain when the vehicle is turned off.
The Direct-Fit, Programmed Solution
Don’t let a faulty BCM compromise your driving experience. This replacement Body Control Module, part number 25910474, is the definitive solution for your vehicle. We take the hassle and high cost out of the repair process. Simply provide us with your vehicle’s 17-digit VIN during checkout, and our technicians will program the module specifically for your car. It will arrive loaded with the latest GM factory software, ensuring optimal performance and compatibility. This plug-and-play approach eliminates the need for expensive programming services at a dealership.
Installing Your 2008-2013 CTS Body Control Module
Installation is straightforward for an experienced DIYer or any professional mechanic. After the physical installation, some vehicles may require additional electronic relearn procedures to ensure all systems communicate correctly. Specifically, an ‘Airbag System Sync’ may be needed if the airbag light illuminates, and a ‘Brake Pedal Position Relearn’ might be required for proper brake light and traction control function. These procedures are typically performed with a professional-grade bidirectional scan tool. This 2008-2013 CTS Body Control Module is designed to restore your vehicle’s factory functions seamlessly.
This module is a direct replacement for a wide range of original equipment part numbers, ensuring broad compatibility across many GM vehicles. Please verify your original part number against this list:
Compatible 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 exactly does a Body Control Module (BCM) do?
The BCM is a computer that acts as the central hub for your vehicle’s body electronics. It reads inputs from switches (like your window switch or headlight switch) and sensors, and then sends commands to operate various accessories like lights, locks, wipers, and the security system.
Do I need to get this BCM programmed by a dealer?
No. We handle the programming for you before we ship the part. Simply provide your vehicle’s VIN when you order, and the module will arrive ready for installation, flashed with the latest GM software for your specific vehicle.
Where can I find my vehicle’s VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side dashboard visible through the windshield.
What if my airbag light is on after I install the new BCM?
In some cases, the new BCM needs to be electronically introduced to the airbag system (SDM). This is done with a procedure called ‘Setup SDM Primary Key in BCM’ which requires a professional bidirectional scan tool. This syncs the modules and will turn off the warning light.
Is there a core charge for this part?
No, there is no core charge. You can keep your original module without needing to send it back to us.
How can I be sure my BCM is the problem?
While the symptoms listed are strong indicators, a full vehicle diagnostic scan is the best way to confirm a failing BCM. Look for communication error codes (U-codes) or specific fault codes related to the BCM. If multiple, unrelated electrical systems are malfunctioning, the BCM is a very likely cause.