Restore Your Vehicle’s Brain without the Dealership Headache
If your GMC Terrain is plagued by bizarre electrical issues—flickering lights, malfunctioning power windows, a temperamental starter, or strange warning messages—you’re likely dealing with a failing Body Control Module (BCM). As a technician with over 20 years of experience, I’ve seen how a faulty BCM can turn a reliable vehicle into a source of constant frustration. It’s the central nervous system of your car, and when it goes bad, chaos ensues. Forget the exorbitant costs and scheduling hassles of the dealership. We offer a straightforward, reliable solution: a replacement BCM programmed specifically for your vehicle.
Our unique cloning service makes this repair accessible to everyone. You simply send us your original BCM, and we transfer all the critical vehicle-specific data—like VIN, mileage, and key information—to this replacement unit. We then ship it back to you, ready for a simple, plug-and-play installation. This process bypasses the need for expensive factory scan tools and programming procedures, getting you back on the road quickly and affordably.
From the Diagnostic Bay: The Ghost in the Machine
A customer brought in a 2015 Terrain that would intermittently refuse to start. They had already replaced the battery and starter on the advice of another shop, but the problem persisted. The dash lights would come on, but turning the key did nothing. After running diagnostics, I found no codes for the starter circuit but saw several communication errors (U-codes) pointing to the BCM. A failing BCM can disrupt the anti-theft system’s communication with the key, preventing the starter from engaging. We cloned his original module to a new unit, and the problem was solved instantly. It’s a classic case where the root cause wasn’t mechanical, but electronic—a ghost in the machine that only a correct BCM could fix.
Is Your Terrain Showing These Symptoms?
- ✔ Unpredictable starting issues or a complete no-start condition.
- ✔ Power windows, door locks, or interior lights operating erratically or not at all.
- ✔ The security or anti-theft light staying on, preventing the engine from cranking.
- ✔ Horn honking randomly or wipers activating on their own.
- ✔ Multiple, unrelated warning lights on the dashboard.
- ✔ Diagnostic trouble codes (DTCs) like U0140, U0100, or other communication-related faults.
Your Straightforward Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On the 2013-2017 Terrain and Equinox, the BCM is typically located on the left-hand (driver’s) side of the dashboard, often behind the lower dash panel or kick panel.
- ✔ Remove the Old Module: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, remove any bolts or clips holding the module in place.
- ✔ Install the New Module: Seat your new, programmed BCM in the mounting bracket and secure it. Reconnect all the electrical harnesses firmly until they click into place.
- ✔ Power Up: Reconnect the negative battery terminal. Your vehicle’s data is already on the module, so no further programming is required.
Important Post-Installation Notes
In some cases, additional minor procedures may be needed after installation. This is normal and depends on your vehicle’s specific configuration.
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the safety systems.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor recalibration might be necessary.
Verified Vehicle Compatibility
This module is a direct replacement for part number 13588447 and is also compatible with the following part numbers: 13584695, 13586273, 13580697, 13589197, 13589324, and 13589325. It is guaranteed to fit the following models:
- 2013-2017 GMC Terrain: Body Control (BCM); (LH side dash), body control
- 2013-2017 Chevrolet Equinox: Body Control (BCM); (LH side dash), body control
- 2013-2017 Buick Verano: Body Control (BCM); (below center of dash)
- 2013 Chevrolet Malibu: Body Control (BCM); (LH kick panel)
- 2013-2014 Buick Encore: Body Control (BCM); (LH side of dash)
- 2013-2014 Chevrolet Cruze: Body Control (BCM); (LH kick panel)
- 2015 Chevrolet Cruze: Body Control (BCM); (LH kick panel)
- 2016 Chevrolet Cruze: Body Control (BCM); (LH kick panel), VIN P (4th digit, Limited)
- 2013-2014 Chevrolet Trax: Body Control (BCM); (LH side of dash)
- 2013 Chevrolet Volt: Body Control (BCM); (RH engine compartment)
- 2013 Cadillac SRX: Body Control (BCM); (LH dash)
- 2013 Buick Regal: Body Control (BCM); (LH dash)
- 2014-2015 Chevrolet Spark: Body Control (BCM); (left lower a-pillar), gasoline model
- 2013-2014 Chevrolet Orlando: Body Control (BCM); (below center console)
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
How does the programming 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 transfer all the essential data to the replacement module. We then ship the ready-to-install module back to you.
Do I need to have my keys reprogrammed?
No. Because we clone the data from your original module, the replacement BCM will already recognize your existing keys. This saves you a trip to the locksmith or dealer.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM is failing, we can still extract the necessary data. Please contact us with the specifics of your issue before ordering if you suspect your module is completely unresponsive.
Is this a guaranteed fix for my 2013-2017 Terrain BCM issues?
This part resolves issues directly caused by a faulty BCM. While it fixes the most common electrical problems, proper diagnosis is key. Ensure your vehicle’s wiring and other related components are in good condition.
Do I need to send my old part back after installation?
No, there is no core charge for this item. You only need to send us your original module for the initial data cloning service. You can keep it afterward.