Are you battling bizarre electrical issues in your Cadillac SRX? Flickering lights, malfunctioning power windows, or a security system that acts up randomly are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can turn your driving experience into a frustrating guessing game. In my 20+ years of diagnostics, I’ve seen countless GM vehicles sidelined by these exact problems, often leading to expensive and unnecessary part replacements before the true culprit—the BCM—is identified.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a reliable BCM, compatible with part number 25934763, and professionally program it with the latest GM software updates specifically for your vehicle’s VIN. This critical step ensures all your vehicle’s options and security systems communicate correctly right out of the box, eliminating the need for a costly trip to the dealership for programming. You get a reliable fix that restores factory functionality without the hassle.
Common Signs of a Failing GM BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The security system engaging randomly or preventing the car from starting (Security light on).
- ✔ Horn sounding unexpectedly or not working when pressed.
- ✔ False warnings on the driver information center (DIC).
- ✔ Communication failure codes, such as U0140 (Lost Communication With Body Control Module), stored in other modules.
From the Diagnostic Bay: The SRX with a Mind of Its Own
A customer brought in a 2008 SRX with a list of complaints that sounded like the vehicle was haunted. The dome lights would stay on, the driver’s window wouldn’t go down, and the alarm would go off in the middle of the night. They had already replaced the battery and the window switch with no luck. After hooking up my scan tool, I saw a slew of communication errors pointing back to one source. The original BCM had suffered from internal corrosion on the circuit board—a common issue I’ve seen on these platforms. Installing a VIN-programmed 2007-2009 SRX Body Control Module was the definitive repair. The new module restored communication across all systems, and all the strange electrical gremlins vanished instantly.
A Straightforward Guide to Your BCM Swap
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Locate the BCM: On the 2007-2009 Cadillac SRX, the Body Control Module is typically located on the left-hand (driver’s) side of the dash, often behind the lower dash panel.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket and remove it.
- ✔ Install the New Module: Mount your new, pre-programmed BCM into the bracket and securely reconnect all electrical connectors. Ensure they click into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions: lights, locks, windows, horn, etc.
- ✔ Perform Relearns (If Needed): As noted in our technical information, you may need a professional scan tool to perform a ‘Setup SDM Primary Key in BCM’ if the airbag light is on, or a ‘Brake Pedal Position Relearn’. This is not always required but is a possibility.
Verified Vehicle Compatibility List
This module is a direct replacement for part number 25934763 and a wide range of other GM part numbers. While this is a 2007-2009 SRX Body Control Module, it also fits many other vehicles. Please verify your original part number against our cross-reference list and confirm your vehicle’s make, model, and year below.
- Cadillac SRX: 2007-2009 (LH dash)
- Cadillac CTS: 2008-2013 (LH dash)
- Chevrolet Equinox: 2007-2009 (Center dash)
- GMC Acadia: 2007-2012 (LH dash)
- Chevrolet Impala: 2006-2012 (LH dash)
- Chevrolet Tahoe / GMC Yukon: 2010 (Check ID)
- And many more GM models…
No. This is the biggest benefit of our service. You provide us with your vehicle’s 17-digit VIN during or after checkout, and we program the module with the latest GM software before we ship it. It arrives ready for installation.
A core charge is a deposit you pay until you return your old part. We do not have a core charge on this BCM. You can keep your original module, saving you the time and expense of shipping it back.
If your vehicle’s issues match the common symptoms of a failed BCM and have been properly diagnosed, this part is the correct solution. The BCM controls dozens of functions, so a failure can cause many different symptoms. We recommend a professional diagnosis to confirm the BCM is the point of failure.
In some cases, the new BCM needs to be synced with the airbag system’s Supplemental Inflatable Restraint (SIR) module. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is a simple sync procedure for a qualified technician.
The part number is printed on a sticker directly on the case of your original Body Control Module. You will need to access the module to read it.
Disclaimer: Post-installation procedures can vary. Always consult a factory service manual or a qualified technician if you are unsure about any step of the process.