Is Your Vehicle Experiencing Strange Electrical Issues?
The Body Control Module, or BCM, is the central command center for your vehicle’s electronic accessories. It manages everything from your power windows and door locks to the interior lights, security system, and instrument cluster. When the BCM begins to fail, it can cause a cascade of confusing and frustrating problems that can be difficult to diagnose. If your Chevrolet Cruze, GMC Terrain, Buick Regal, or Cadillac SRX is acting possessed, a failing BCM is a likely culprit.
From the Diagnostic Bay
We had a 2013 Chevy Cruze come into the shop with a list of bizarre symptoms. The owner said the radio would randomly change stations, the dome light would flicker while driving, and occasionally the car would refuse to start, showing a security light on the dash. We checked all the usual suspects—battery, alternator, ground wires—and everything seemed fine. It wasn’t until we connected our diagnostic scanner and saw a flood of communication errors from the BCM that we pinpointed the problem. The module’s internal processor was failing. By providing a replacement BCM with the original’s data cloned onto it, we solved every single issue in one go. It’s a textbook example of how a faulty BCM can wreak havoc on an otherwise healthy vehicle.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not turning on).
- ✔ Instrument cluster gauges behaving abnormally or warning lights appearing for no reason.
- ✔ Vehicle security system faults or anti-theft light staying illuminated.
- ✔ Remote keyless entry (fob) not working correctly.
- ✔ A no-start condition where the engine cranks but won’t fire up due to a security lockout.
- ✔ Communication errors with other vehicle modules when checked with a scan tool.
The Simple, Cost-Effective Solution: Our Programming Service
Replacing a BCM isn’t as simple as swapping the part. A new module from the dealership is a blank slate and requires expensive, specialized programming to learn your vehicle’s specific VIN, security keys, and optional features. Our service completely bypasses this expensive and time-consuming process. We take the data from your original, failing BCM and transfer it directly to this replacement module. The result is a perfect digital twin of your original part that is 100% plug-and-play.
How It Works:
- ✔ Place Your Order: Complete your purchase through our secure checkout.
- ✔ Ship Us Your Module: We will contact you with simple instructions for shipping your original BCM to our facility.
- ✔ We Handle the Programming: Upon arrival, our technicians will professionally transfer all necessary data from your module to the replacement unit.
- ✔ Receive Your Plug-and-Play Part: We ship the programmed module back to you, typically within 1-2 business days. You’ll receive tracking information so you know exactly when it will arrive.
Installation and Post-Install Considerations for Your 2013 Cruze BCM
Once you receive the programmed module, installation is straightforward. Simply disconnect the battery, remove the old BCM (typically located in the driver’s side kick panel or behind the dash), and install the new one. Reconnect the battery, and your vehicle’s functions should be restored. In some cases, minor relearn procedures may be necessary:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure may be needed. This syncs the new BCM with the airbag system and requires a professional-grade scan tool.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor recalibration might be required on some models.
Guaranteed Fitment for Multiple Part Numbers:
This module is a direct replacement for the following part numbers: 13577850, 13505326, 13500384, 13574844, 13504004, 13504494, and 13578420. It is compatible with a range of GM vehicles, including:
- 2013 Chevrolet Cruze (with option ATH)
- 2011 Chevrolet Cruze
- 2011 Buick Regal (without option AUA)
- 2010-2011 GMC Terrain
- 2010 Chevrolet Equinox
- 2010 Cadillac SRX
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors a wide range of electronic body functions not related to the engine, such as lights, windows, locks, security, and wipers.
How does your programming service work?
You send us your original BCM. We use specialized equipment to extract the unique vehicle data (like VIN, key codes, and feature settings) and flash it onto the replacement module. This makes the new part a perfect clone of the original, ensuring seamless integration.
Is this a plug-and-play solution?
Yes! Because we’ve already programmed the module with your car’s specific data, you won’t need to visit a dealer for additional programming. In most cases, you can simply install it and go. Some vehicles may require minor relearn procedures as noted above.
Will I need to take my car to the dealer after installation?
No, our service is designed to completely eliminate the need for dealership programming. The module arrives ready to be installed and function correctly in your vehicle.
How do I know if my BCM is the problem?
While the symptoms listed above are strong indicators, a definitive diagnosis often requires a professional scan tool to check for communication error codes (U-codes) from the BCM. If you’re experiencing multiple, unrelated electrical issues, the BCM is a very likely cause.
Which part numbers does this module replace?
This service and replacement module are compatible with part numbers 13577850, 13505326, 13500384, 13574844, 13504004, 13504494, and 13578420.