Restore Full Functionality to Your Cadillac SRX
Are you dealing with baffling electrical issues in your 2007-2009 Cadillac SRX? Flickering lights, unresponsive power windows, or a security system that acts up randomly are classic signs of a failing Body Control Module (BCM). The BCM is the electronic nerve center for your vehicle’s comfort and convenience features. When it malfunctions, it can make driving frustrating and even unpredictable. This replacement Body Control Module, part number 25847589, is the reliable, cost-effective solution to get your vehicle’s electronics working flawlessly again.
We take the guesswork and extra expense out of the repair. Unlike a dealership that requires you to bring your vehicle in for costly programming, we flash this module with the latest GM software using your vehicle’s specific VIN before it ships. This means it arrives at your door ready for installation, saving you time, money, and a trip to the service center. It’s the smart fix for both savvy DIYers and professional repair shops.
A Technician’s Notebook: The Ghost in the Cadillac
I had a 2008 SRX roll into my bay last month with a list of complaints that seemed unrelated. The owner said the dome lights would stay on, the driver’s side window wouldn’t go down, and the radio would randomly shut off. He’d already replaced the battery and checked fuses. A scan showed a handful of U-codes, indicating a communication breakdown on the network. In my 20+ years of experience, when you see multiple, unrelated body electronic failures, the BCM is the prime suspect. After confirming power and ground to the module were good, we ordered a pre-programmed unit. Once installed, every single issue was resolved. It’s a textbook example of how a single failing 2007-2009 SRX Body Control Module can create system-wide chaos.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security system or alarm engaging without reason.
- ✔ Instrument cluster warning lights (like airbag or traction control) illuminating.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire up.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication loss, such as U0140, U0155, or U0164.
A Straightforward Guide to BCM Replacement
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- ✔ Locate the BCM: On the 2007-2009 SRX, the Body Control Module is typically located on the left-hand (driver’s) side of the dash, often behind the lower dash panel near the steering column.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all electrical connectors, ensuring they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: windows, locks, lights, etc.
- ✔ Perform Relearns (If Needed): As noted below, you may need to perform a Brake Pedal Position Relearn or an Airbag System Sync if warning lights appear. This often requires a bi-directional scan tool.
Important Post-Installation Information
While this 2007-2009 SRX Body Control Module is programmed for your VIN, some vehicle systems may require recalibration after the new part is installed. This is a normal part of the process.
- Airbag System Sync: If the airbag warning light is on after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is needed. This syncs the new BCM with the airbag system and requires a professional-grade diagnostic tool.
- Brake Pedal Position Relearn: On some models, the brake pedal position sensor may need to be recalibrated to ensure proper brake light and stability control operation.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step of the process.
Verified Vehicle Compatibility
This module is a direct replacement for part number 25847589 and is compatible with a wide range of General Motors vehicles. While this listing is focused on the 2007-2009 SRX Body Control Module, it also fits many other cars, trucks, and SUVs. Please verify your part number against the list below.
Interchangeable 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
Primary Fitment:
- Cadillac SRX: 2007, 2008, 2009 (LH dash)
Partial list of other compatible models:
- Acadia, Enclave, Traverse (07-12)
- CTS (08-13), DTS (06-11), STS (10)
- Impala (06-12), Monte Carlo (06-07)
- Equinox, Torrent (07-09)
- Tahoe, Yukon, Escalade, Suburban, Avalanche (10 – check ID)
- Express / Savana Vans (08-12)
- And many more. Please match your part number to confirm.
Frequently Asked Questions
Do I have to send my old BCM back?
No. This purchase does not require a core return. You can keep your original module.
What information do you need to program the module?
After you complete your purchase, we will need your vehicle’s 17-digit Vehicle Identification Number (VIN) to program the BCM with the correct software and vehicle options.
Is this BCM difficult to install for a DIYer?
For someone with basic mechanical skills, the physical swap is straightforward. The main challenge can be accessing the module’s location. The most important part is being aware that some post-installation electronic relearns may be necessary.
What happens if my airbag light is on after installation?
This is a common security feature. The new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Will this fix my car’s specific problem?
This module will correct issues caused by a faulty BCM. Because the BCM controls so many functions, it’s a common cause for widespread electrical problems. However, you should always ensure your vehicle has been properly diagnosed to confirm the BCM is the root cause.