Restore Your Vehicle’s Electrical Stability with a Programmed BCM
Are you chasing electrical gremlins in your Cadillac, Chevy, or GMC? Flickering lights, malfunctioning power windows, a security system that acts up, or an engine that won’t start can often be traced back to one central component: the Body Control Module (BCM). As an experienced technician, I’ve seen firsthand how a failing BCM can turn a reliable vehicle into a source of constant frustration. This isn’t just a part; it’s the nerve center for your vehicle’s comfort and convenience features, and when it fails, chaos ensues.
We offer a straightforward and reliable solution. This is a fully tested Body Control Module, compatible with part number 13577850 and others listed below. The best part? We handle the programming for you. Simply send us your original BCM, and we will clone all the necessary data to this replacement unit. This means no expensive trips to the dealership for programming, no complex setup procedures, and no surprise fees. You’ll receive a module that is truly plug-and-play, getting you back on the road quickly and affordably.
Real-World Repair Story: The Case of the Confused Equinox
Real-World Repair Story: The Case of the Confused Equinox
A customer brought in a 2010 Chevy Equinox with a maddeningly intermittent no-start condition. The battery was new, the starter checked out, but every few days, it would just refuse to crank. On top of that, the radio would sometimes stay on after the key was removed, and the dome lights had a mind of their own. After chasing wires and checking grounds, my diagnostic scanner pointed to a communication loss with the BCM (U0140). Instead of a complete failure, the original BCM was sending corrupt data packets, confusing other modules on the network. By cloning his original BCM’s data to one of our tested units, we solved all the issues in one shot. It’s a classic example of how a faulty 2010 SRX BCM or its equivalent can cause a cascade of seemingly unrelated problems.
Common Signs of a Failing BCM
If your vehicle is exhibiting any of these symptoms, a faulty BCM could be the culprit. A failing module can often store diagnostic trouble codes (DTCs) related to communication errors, such as U0100, U0140, or B-series codes for specific body functions.
- ✔ Erratic or non-functional interior/exterior lights
- ✔ Power windows, locks, or mirrors working intermittently or not at all
- ✔ The anti-theft or security system light staying on, preventing the engine from starting
- ✔ The horn honking unexpectedly or not working
- ✔ Wipers activating on their own or not responding
- ✔ Dashboard warning lights appearing without a clear cause
A Straightforward Guide to BCM Installation
Installing your programmed BCM is a manageable job for a confident DIYer. The key is that we’ve handled the complicated programming. Always prioritize safety and consult a service manual for your specific vehicle’s diagrams and torque specs.
- 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 most of these models, the BCM is located on the driver’s side, either behind the lower dash panel or in the kick panel area. You may need to remove some trim pieces 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 the module from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely fasten it. Reconnect all the electrical connectors, ensuring they click firmly into place.
- Reconnect and Test: Re-install any trim panels you removed. Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, windows, locks, wipers, etc., before starting the engine.
Post-Installation Notes
While our cloning service makes this a plug-and-play process, some vehicle systems may require a ‘handshake’ with the new module. Be aware of the following possibilities:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure correct brake light operation and traction control function.
Disclaimer: Vehicle systems vary. Always refer to a factory service manual or consult with a qualified mechanic for procedures specific to your make and model.
Verified Vehicle Compatibility
This module is a direct replacement for several part numbers and is guaranteed to fit the following vehicles. Please match your original part number or vehicle application to ensure compatibility.
- Part Numbers: 13577850, 13505326, 13500384, 13574844, 13504004, 13504494, 13578420
- Cadillac SRX: 2010 (Body Control Module; LH dash)
- Buick Regal: 2011 (Body Control Module; LH dash, w/o opt AUA)
- Chevrolet Cruze: 2011, 2013 (Body Control Module; LH kick panel)
- Chevrolet Equinox: 2010 (Body Control Module; LH side dash)
- GMC Terrain: 2010, 2011 (Body Control Module; LH side dash)
Frequently Asked Questions
Real-World Repair Story: The Case of the Confused Equinox
A customer brought in a 2010 Chevy Equinox with a maddeningly intermittent no-start condition. The battery was new, the starter checked out, but every few days, it would just refuse to crank. On top of that, the radio would sometimes stay on after the key was removed, and the dome lights had a mind of their own. After chasing wires and checking grounds, my diagnostic scanner pointed to a communication loss with the BCM (U0140). Instead of a complete failure, the original BCM was sending corrupt data packets, confusing other modules on the network. By cloning his original BCM’s data to one of our tested units, we solved all the issues in one shot. It’s a classic example of how a faulty 2010 SRX BCM or its equivalent can cause a cascade of seemingly unrelated problems.