Restore Full Electrical Function to Your GM Vehicle
Are you battling frustrating electrical issues in your 2010-2011 GMC Terrain, Chevy Equinox, or other compatible GM model? Seemingly random problems like flickering lights, unresponsive power windows, or a malfunctioning security system often point to a single culprit: a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics. When it starts to fail, it can cause a cascade of confusing and unpredictable symptoms. Simply swapping it with a used module from a salvage yard won’t work, as those units are locked to the original vehicle’s VIN and options. This is where our unique programming service provides the perfect solution.
The Simple, Cost-Effective Solution: Data Cloning
This listing is for a replacement BCM that is professionally programmed using the data from your vehicle’s original module. This ‘cloning’ process involves transferring all the critical, vehicle-specific information—including VIN, mileage, and optional equipment settings—from your failing BCM to this replacement unit. The result is a true plug-and-play module that restores your vehicle’s functionality without requiring an expensive trip to the dealership for programming. You simply send us your original BCM, we perform the service, and ship the ready-to-install replacement back to you.
From the Diagnostic Bay
We had a 2011 Equinox (which shares the same platform as the Terrain) come in with the strangest issue. The customer said their left turn signal would sometimes activate the windshield wipers. We checked wiring diagrams and grounds for hours, finding nothing obvious. On a hunch, we scanned the BCM and found multiple communication error codes. A failing processor inside the module was corrupting data packets, causing these bizarre crossed signals. Replacing it with a cloned unit solved the problem instantly. It’s a classic example of how a single module can cause a cascade of seemingly unrelated issues.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, locks, or mirrors.
- ✔ Erratic interior or exterior lighting (flickering, staying on, or not turning on).
- ✔ Instrument cluster displaying incorrect information or random warning lights.
- ✔ Vehicle security system acting up, causing no-start conditions or false alarms.
- ✔ HVAC (heating and air conditioning) controls not responding correctly.
- ✔ Radio or infotainment system malfunctions and communication errors.
- ✔ Inconsistent windshield wiper operation.
Installation and Post-Install Considerations for your 2010-2011 Terrain BCM
The BCM is typically located on the driver’s side, behind the lower dashboard or kick panel. While the physical swap is straightforward for those with basic mechanical skills, please be aware of potential post-installation procedures. Always disconnect the battery before beginning work.
- Airbag System Sync: If the airbag warning light comes on after installation, the ‘Setup SDM Primary Key in BCM’ procedure will need to be performed with a professional diagnostic tool to sync the system and turn off the light. This is only required if the light is on.
- Brake Pedal Position Relearn: Depending on your specific model, a brake pedal position sensor recalibration may be necessary to ensure proper brake light function and traction control system performance.
Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Guaranteed Compatibility
This module and programming service are a direct solution for a wide range of GM vehicles. This part is compatible with the following part numbers:
13578420, 13577850, 13505326, 13500384, 13574844, 13504004, 13504494
It is confirmed to fit these makes and models:
- 2011 Buick Regal (w/o opt AUA)
- 2013 Chevrolet Cruze (w/opt ATH)
- 2011 Chevrolet Cruze
- 2010 Chevrolet Equinox
- 2010 Cadillac SRX
- 2010-2011 GMC Terrain
Frequently Asked Questions
What does this BCM programming service involve?
Our service involves extracting the unique software, VIN, and vehicle-specific settings from your original BCM and perfectly transferring it to this replacement unit. This ‘cloning’ process makes the part plug-and-play for your vehicle, avoiding the need for expensive dealership programming.
Is this part difficult to install?
The physical replacement is straightforward for someone with basic mechanical skills. The BCM is typically located on the driver’s side behind the lower dash panel. However, please be aware that some post-installation electronic relearn procedures may be necessary, as noted in the description.
What if my airbag light is on after installation?
This is a known possibility on some models. If the airbag light illuminates, a procedure called ‘Setup SDM Primary Key in BCM’ will need to be performed with a professional-grade scan tool to sync the airbag system with the new BCM and clear the light.
Why can’t I just buy a used BCM from a junkyard?
A used BCM is programmed to the VIN and options of the donor vehicle. Installing it in your car will cause system conflicts, and many features will not function correctly. It would require reprogramming by a dealer, which can be expensive and is not always possible. Our service bypasses this entire problem.
Do I need to send my original BCM back as a core?
No core charge is required for this part. You will need to ship your original BCM to us for the initial data cloning service. After the service is complete, we will return your original module along with the newly programmed replacement.
How long does the process take?
Once we receive your original BCM, our programming service is typically completed within 1-2 business days. We will then ship both your original module and the newly programmed replacement back to you and provide tracking information.