Is Your 2012 GMC Terrain Experiencing Strange Electrical Issues?
If your vehicle’s lights are flickering, the power windows are acting up, the horn is sounding randomly, or you’re seeing inexplicable warning lights on your dash, you’re likely dealing with a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s electronics, managing everything from interior lighting and security to power locks and climate control. When it starts to fail, it can cause a cascade of frustrating and unpredictable problems that can make your vehicle feel unreliable.
The Simple, Cost-Effective Solution for Your 2012 Terrain BCM
Forget expensive trips to the dealership that involve high diagnostic fees and costly programming charges. We offer a straightforward, plug-and-play solution. This listing is for a replacement BCM, part number 13588446 (interchangeable with 13580696, 123589093, 13584692, and 13583542), that is programmed specifically for your vehicle using the data from your original module. This cloning process ensures that the replacement BCM is a perfect match for your Terrain’s specific configuration, retaining all original keys and settings without any need for additional programming after installation.
From the Diagnostic Bay
We recently had a customer with a 2012 Equinox (which uses the same BCM) who was at their wit’s end. Their interior lights would stay on, draining the battery overnight, and the power door locks worked intermittently. The dealership quoted them over $1,200 for a new BCM and the required programming. They were hesitant to spend that much on an older vehicle. They sent us their original BCM, we cloned the data onto one of our replacement units, and shipped it back the next day. They installed it in under 30 minutes in their own driveway, and every single issue was resolved. This service saved them nearly a thousand dollars and a lot of hassle.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, locks, or mirrors.
- ✔ Flickering or erratic interior and exterior lights.
- ✔ The security system acting up or preventing the car from starting (Security light on).
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Inaccurate gauge readings or warning lights on the instrument cluster.
- ✔ Wipers turning on by themselves or not working when needed.
- ✔ Problems with the radio or climate control systems.
How Our Simple Programming Service Works
- ✔ Place Your Order: Purchase this BCM programming service.
- ✔ We’ll Contact You: We will reach out with clear instructions and a shipping address to send your original BCM to us.
- ✔ Ship Your Module: Carefully package and ship your original BCM to our facility.
- ✔ Install and Go: Simply install the programmed BCM back into your vehicle. It’s a true plug-and-play fix!
Post-Installation Information
While our goal is a seamless installation, some GM vehicles may require minor post-install procedures. Please be aware of the following:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a simple ‘Setup SDM Primary Key in BCM’ procedure may be needed. This is performed with a professional scan tool and syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure proper brake light and traction control functionality.
Always consult a factory service manual or a qualified technician if you are unsure about any installation steps.
Guaranteed Fitment
This BCM is a direct replacement for several part numbers and fits a wide range of GM vehicles. Please verify your part number and check the compatibility list below:
- GMC Terrain: 2012
- Chevrolet Equinox: 2012
- Buick Regal: 2012
- Buick LaCrosse: 2012-2013 (ID 13580696)
- Buick Verano: 2012
- Cadillac SRX: 2012 (ID 13580696)
- Chevrolet Camaro: 2012-2014
- Chevrolet Volt: 2012
- Chevrolet Spark: 2013
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that acts as the central hub for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, security system, and more.
Why is this programming service better than buying a new BCM?
A new BCM from a dealership is a blank slate and requires expensive, specialized tools to be programmed to your vehicle’s VIN and options. Our service clones your existing data, making the replacement plug-and-play, which saves you hundreds in programming fees and eliminates the need for a tow to the dealer.
How long does the service take once you receive my module?
We pride ourselves on a fast turnaround. We typically program and ship the replacement module back to you within 24-48 hours of receiving your original BCM.
Is the BCM difficult to access and replace?
On the 2012 GMC Terrain and Equinox, the BCM is located on the left (driver’s) side of the dash. It is generally accessible by removing a few trim panels. Most DIY mechanics with basic tools can complete the removal and installation in under an hour.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM is not functioning in the vehicle, we can still extract the necessary data from the memory chip. Please contact us with details about your module’s condition if you have concerns.
Do I need to return my old BCM after I receive the new one?
No, there is no core charge for this service. You only need to send us your original BCM for the initial data cloning. You can keep it afterward.