If your 2007-2009 Cadillac SRX is starting to feel like it’s haunted, you’re in the right place. As a technician with over two decades of experience, I’ve seen it all: dome lights that won’t turn off, power windows with a mind of their own, a security light that stays on, or a car that refuses to start for no apparent reason. More often than not, the culprit is a failing Body Control Module (BCM). This isn’t just an inconvenience; it’s a frustrating problem that can make you lose faith in your vehicle.
The BCM is the central hub for your vehicle’s body electronics. It controls everything from the interior lights and power locks to the instrument cluster and security system. When it fails, communication between these systems breaks down, leading to a cascade of bizarre and unpredictable issues. Taking it to the dealership often means expensive diagnostic fees, a high-priced module, and additional charges for programming. We offer a better, more direct solution.
This is a direct-fit replacement Body Control Module, specifically for your vehicle. The best part? We handle the complicated part for you. Before we ship it, we program the module with the latest GM software updates using the VIN you provide at checkout. This means it arrives at your door ready for installation, with no need for a trip to the dealer. You get a reliable, fully functional BCM that restores your vehicle’s electronics to perfect working order.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Instrument cluster gauges behaving strangely or not working at all.
- ✔ Interior or exterior lights staying on or not turning on.
- ✔ The vehicle’s security system preventing the car from starting (Security light on).
- ✔ False warning messages appearing on the driver information center.
- ✔ Communication loss codes, such as U0140, stored in other modules.
- ✔ Intermittent electrical functions that seem to have no pattern.
A Technician’s Notebook: The Confusing Cadillac Case
A customer brought in a 2008 SRX with a laundry list of complaints: the radio would cut out, the driver’s side window wouldn’t go down, and occasionally the car wouldn’t start. They had already replaced the battery and checked the alternator. Diagnostics showed a dozen intermittent communication codes across multiple systems. This is a classic BCM failure signature. The internal logic of the module was corrupted, sending faulty signals across the car’s network. After installing a VIN-programmed BCM like this one, every single issue was resolved instantly. It’s a prime example of how one component can cause widespread, confusing problems.
A Straightforward Guide to Your BCM Installation
Installing your new 2007-2009 SRX Body Control Module is a manageable job for a DIYer with basic tools. The BCM is typically located on the left (driver’s) side of the dash.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On the SRX, you’ll generally find the BCM mounted to the left of the steering column, behind the lower dash panel. You may need to remove this panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip 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’ll hear a click as they lock 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, etc.—to confirm proper operation.
Important Post-Installation Note: In some cases, additional vehicle-specific relearn procedures may be needed. For example, if the airbag light is on, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. A ‘Brake Pedal Position Relearn’ may also be necessary. Always consult a service manual for your specific vehicle if you are unsure.
Verified Vehicle Compatibility List
This module is a direct replacement for part number 15880684 and is compatible with a wide range of GM vehicles. Please verify your original part number or consult the list below. This part fits models including, but not limited to:
This unit is also a direct replacement for the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.
Frequently Asked Questions
Do I need to do any programming myself?
No. We program the module to your vehicle’s specific VIN before shipping. It arrives ready to be installed, saving you a trip to the dealership and their programming fees.
Is there a core charge for this part?
Absolutely not. There is no core charge, and you do not need to send your old module back to us. You can keep it or dispose of it yourself.
What information do you need from me?
After you complete your purchase, we will need you to provide your vehicle’s 17-digit VIN (Vehicle Identification Number) so we can program the module correctly.
Will this fix my specific problem?
This 2007-2009 SRX Body Control Module is the definitive solution for issues caused by a faulty BCM. If your vehicle exhibits symptoms like erratic lights, non-working power accessories, or security system faults, a failing BCM is the most likely cause.
What if my airbag light comes on after installation?
This is uncommon, but if it happens, it means the new BCM needs to be synced with the airbag system (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. Any professional repair shop can perform this task.