Restore Full Function to Your GM Vehicle with a Programmed BCM
Are you battling bizarre electrical issues in your GMC Terrain, Equinox, or other compatible GM vehicle? One moment the power locks work, the next they don’t. The radio acts possessed, and dashboard lights flicker without reason. These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). The BCM is the central command for your vehicle’s body electronics, and when it malfunctions, it can create a cascade of frustrating and unpredictable problems. This isn’t a part you can ignore.
We offer a straightforward, reliable solution. This replacement BCM, compatible with part number 13577850 and others, comes with our professional cloning service. This means you get a part that is truly plug-and-play. Forget about expensive dealership visits for programming, security relearns, and key fob reprogramming. We handle all of that before the part ever ships to you, saving you significant time, money, and hassle.
From the Diagnostic Bay
I remember a 2011 Terrain that came into my shop with a laundry list of complaints from the owner. The turn signals would sometimes stop working, the interior dome light would stay on, and occasionally, the vehicle wouldn’t recognize the key. We spent hours checking wiring diagrams and grounds, but everything seemed fine. On a hunch, we monitored data from the BCM and saw erratic outputs. The module was failing internally. The owner was worried about a multi-day dealership repair and a bill over $1000. By providing a cloned 2010-2011 Terrain BCM, we had them back on the road the next day for a fraction of the cost, with all issues resolved. This service is the go-to for smart, efficient repairs.
Is Your Vehicle Showing These Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that won’t turn on or off correctly.
- ✔ The security or anti-theft system activating randomly or preventing the car from starting.
- ✔ Intermittent operation of the radio, climate controls, or instrument cluster gauges.
- ✔ False warning messages on the driver information center.
- ✔ Diagnostic Trouble Codes (DTCs) related to communication errors (U-codes) or BCM internal faults.
A Straightforward Guide to Installation
Installing your programmed BCM is a simple swap. Here’s a general guide:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On most of these models, including the GMC Terrain, the BCM is located on the left (driver’s) side of the dashboard, often behind the lower dash panel or kick panel.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new, programmed BCM in the same location. Securely plug in all the electrical connectors, ensuring they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, and radio—to confirm proper operation.
Our Simple Mail-In Cloning Process
Our goal is to make this repair as easy as possible. After you place your order, we will contact you with clear, step-by-step instructions for shipping your original BCM to our facility. Please ensure your contact information is accurate at checkout. Once we receive your module, our expert technicians will transfer all the critical vehicle-specific data to the replacement unit. This includes VIN, mileage, key fob information, and specific option configurations. We then ship the fully programmed, ready-to-install BCM back to you with tracking information. Best of all, there is no core charge, so you can keep your original module.
Important Post-Installation Information
In most cases, this module is a direct plug-and-play solution. However, due to the complex integration of modern vehicle systems, a couple of additional steps may be required in specific situations:
- 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 new BCM with the airbag system. This is only required if the light appears.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be necessary to ensure correct brake light and traction control functionality.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any part of the process.
Verified Vehicle Compatibility
This BCM is a direct replacement for several part numbers and fits a range of GM vehicles. Please match one of the part numbers below to your original module to ensure compatibility. This module replaces: 13577850, 13505326, 13500384, 13574844, 13504004, 13504494, and 13578420.
- Buick Regal: 2011 (w/o opt AUA)
- Cadillac SRX: 2010
- Chevrolet Cruze: 2011, 2013 (w/opt ATH)
- Chevrolet Equinox: 2010
- GMC Terrain: 2010, 2011
Frequently Asked Questions
How does the cloning service work?
After your purchase, we’ll provide instructions to mail your original BCM to us. We extract its unique data (VIN, keys, etc.) and flash it onto the replacement module. This makes the new part a perfect electronic match for your vehicle, eliminating the need for dealer programming.
Will I need to get my keys reprogrammed?
No. Because we clone your original module’s data, the replacement BCM will already recognize your existing keys. This is one of the biggest benefits of our service.
Is this a difficult part to install for a DIYer?
For most individuals with basic mechanical skills, this is a very manageable job. The BCM is typically accessible behind the driver’s side lower dash panel and involves unplugging connectors and removing a few bolts. Our installation guide provides the general steps.
What is the turnaround time for the programming service?
We typically program and ship your replacement module within 1-2 business days of receiving your original BCM. We then ship it back to you with tracking, getting you back on the road quickly.
What if my airbag light comes on after installation?
This is uncommon but can happen. It simply means the new BCM needs to be electronically introduced to the airbag module. A procedure called ‘Setup SDM Primary Key in BCM’ can be performed with a professional scan tool to resolve this.