If your 2010-2011 GMC Terrain is suddenly plagued by a host of electrical gremlins—like power windows that won’t cooperate, dashboard lights flashing randomly, or a security system that acts up—the culprit is often a failing Body Control Module (BCM). As the central nervous system for your vehicle’s electronics, a faulty BCM can turn a reliable SUV into a source of daily frustration. Dealerships will quote you a hefty price for a new module plus mandatory programming fees. We offer a smarter, more affordable solution: a fully programmed BCM, ready for installation right out of the box.
Our service is designed to be simple and effective. You purchase this BCM, and we’ll contact you with instructions to ship your original module to our facility. Once we receive it, our expert technicians will transfer all the critical data—including your vehicle’s specific VIN, security keys, and option configurations—to this replacement unit. This cloning process ensures a seamless, plug-and-play installation, eliminating the need for expensive diagnostic tools or a trip to the dealer. We then ship the ready-to-install module back to you, getting you back on the road quickly and confidently.
Case Study: A Tricky Diagnosis
A customer brought in a 2011 Equinox (which shares this BCM platform) with a bizarre issue: the radio would turn on by itself, the interior lights would flicker, and the power locks would cycle while driving. They had already replaced the battery and checked the alternator. After hooking up my scanner, I saw multiple U-codes (communication errors) pointing to the BCM. Instead of a costly new module, we performed a cloning service just like this one. The replacement 2010-2011 Terrain BCM resolved all the phantom electrical problems instantly. It’s a textbook example of how a failing BCM can mimic a dozen other issues.
Spotting the Signs of a Failing BCM
A failing Body Control Module can cause a wide range of confusing symptoms. If your vehicle is experiencing any of the following, your BCM is the likely cause:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ The security system or keyless entry failing to operate correctly.
- ✔ Warning lights on the dashboard (like ABS, Airbag, or Traction Control) illuminating for no reason.
- ✔ Communication error codes, such as U0140, U0155, or other U-series codes, stored in the system.
- ✔ The engine won’t start, or the starter doesn’t engage, due to a security system fault managed by the BCM.
A Straightforward Guide to Installation
Installing your pre-programmed BCM is a manageable task for a DIY enthusiast. Here’s a general guide to get the job done:
- Safety First: Always 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 the 2010-2011 GMC Terrain and similar models, the BCM is typically found on the left (driver’s) side of the dash, often behind the kick panel or lower dash trim.
- Remove Trim Panels: Carefully remove any plastic trim or panels necessary to access the module. These usually pop off or are held by a few screws.
- Disconnect and Remove: 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, secure it with the bolts, and firmly reconnect all electrical connectors until they click into place.
- Final Steps: Re-install the trim panels and reconnect the negative battery terminal. Start the vehicle to confirm that the electrical issues are resolved.
Important Post-Installation Checks
While our cloning service makes this a plug-and-play repair, some vehicle systems may require a quick sync-up. If you notice the airbag light is on, a professional scan tool will be needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Additionally, some models may require a ‘Brake Pedal Position Relearn’ to ensure proper brake light and stability control function. Always consult a factory service manual for vehicle-specific details.
Will This Fit My Vehicle?
This BCM is a direct-fit, programmed solution for the 2010-2011 Terrain BCM and is also compatible with a range of other GM vehicles and part numbers. Please verify your part number or vehicle model against the list below.
- Part Numbers: 13578420, 13577850, 13505326, 13500384, 13574844, 13504004, 13504494
- Compatible Models:
- 2011 Buick Regal (w/o opt AUA)
- 2010-2011 GMC Terrain
- 2010 Chevrolet Equinox
- 2011, 2013 Chevrolet Cruze
- 2010 Cadillac SRX
Frequently Asked Questions
Do I need to do any programming myself?
No. This BCM comes fully programmed and ready for installation. We clone the data from your original module, so it’s a true plug-and-play solution. No special tools or dealer visits are required for programming.
What do I need to send you?
You will need to ship your original, currently installed Body Control Module to us. After you place your order, we will contact you with detailed shipping instructions. Please ensure your contact information is correct at checkout.
Is there a core charge for my old BCM?
No, there is no core charge. We use your original module for the data transfer service, but you can keep it afterward if you wish.
How long does the programming service take?
Once we receive your original BCM, our programming and testing process typically takes 1-2 business days. We will then ship the replacement module back to you, and you’ll receive a tracking number at that time.
What if my original BCM is completely dead or not communicating?
In many cases, we can still extract the necessary data even from a non-communicating module. If for some reason we cannot retrieve the data, we will contact you to discuss options, which may include a full refund.