Restore Your Vehicle’s Electrical System with a Plug-and-Play Solution
Are you chasing down bizarre electrical issues in your Chevrolet Equinox, GMC Terrain, or other compatible GM vehicle? Flickering lights, malfunctioning power windows, a security system that acts up, or dashboard warning lights that won’t go away are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and hard-to-diagnose problems. In my 20+ years in the bay, I’ve seen customers spend hundreds on diagnostics, only to find the BCM was the root cause all along.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional cloning service that transfers all the critical, vehicle-specific data from your original BCM to this fully tested replacement unit. This means the module arrives at your door ready to install, with no need for an expensive trip to the dealership for programming. It’s the most reliable way to get your vehicle back to 100% functionality.
A Technician’s Notebook: The Haunted Equinox
A 2010 Equinox came into the shop with a laundry list of complaints: the radio would turn off randomly, the dome light would stay on, and the remote key fob worked intermittently. The owner had already replaced the battery and checked all the fuses. Diagnostics showed several communication error codes (U-codes) pointing to a network issue. Instead of shotgunning parts, we went straight for the BCM. After installing one of our pre-programmed modules, every single issue vanished. It’s a perfect example of how a single failing 2010 Equinox BCM can mimic a dozen different problems.
Is Your Vehicle Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security system or anti-theft light is activated, preventing the car from starting.
- ✔ Inconsistent or failed remote keyless entry (RKE) functions.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss, such as U0140, U0155, or other U-codes.
- ✔ Unexplained battery drain when the vehicle is off.
Your Straightforward BCM Installation Guide
Installing your pre-programmed BCM is a manageable job for a confident DIYer. The BCM is typically located on the left (driver’s) side of the dash or in the kick panel area.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes before beginning work.
- Locate the BCM: On a 2010 Equinox, you’ll find the BCM on the driver’s side of the dash. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New Module: Mount the new, pre-programmed BCM in the same location and securely reconnect all the electrical harnesses. Ensure they click into place.
- Reconnect Power: Re-attach the negative battery terminal.
- Verify Functionality: Start the vehicle and test all body functions—lights, locks, windows, radio, etc.—to confirm the repair was successful.
Important Post-Installation Steps
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a ‘handshake’ with the new BCM. Please be aware of the following:
- Airbag System Sync: If the airbag (SRS) warning light is on 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 module.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure proper brake light and traction control operation.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Verified Vehicle Compatibility
This module is a direct-fit replacement for several part numbers and models. Please verify your vehicle is on this list. This unit is programmed to function correctly for the following applications:
- Buick Regal: 2011 (Body Control, LH dash, w/o opt AUA)
- Chevrolet Cruze: 2011-2013 (Body Control, LH kick panel)
- Chevrolet Equinox: 2010 (Body Control, LH side dash)
- Cadillac SRX: 2010 (Body Control, LH dash)
- GMC Terrain: 2010-2011 (Body Control, LH side dash)
This part replaces the following part numbers: 13577850, 13505326, 13500384, 13574844, 13504004, 13504494, 13578420. Our programming service makes this part number 13578420 a direct replacement for your original.
Frequently Asked Questions
How does the cloning service work?
After you place your order, we will contact you with instructions to ship your original BCM to us. Once we receive it, our technicians will extract the unique data and transfer it to the replacement module. We then ship both your original module and the ready-to-install replacement back to you.
Do I need to program this module at the dealer?
No. The entire point of our service is to save you that time and expense. The module you receive will be fully programmed with your vehicle’s specific information, making it a true plug-and-play installation.
My original part number is slightly different but on your list. Will this work?
Yes. Manufacturers often release updated part numbers that are functionally identical. As long as your part number is included in our compatibility list, this module will work perfectly for your vehicle once programmed.
Is there a core charge for this part?
No, there is no core charge. We require your original module to perform the data cloning service, but we return it to you along with your new BCM.
What happens if the airbag light comes on after I install it?
This is a known possibility. It simply means the airbag control module needs to be electronically introduced to the new BCM. A qualified mechanic with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.