Is Your GM Vehicle Plagued by Bizarre Electrical Gremlins?
If your truck or SUV is experiencing strange electrical issues like flickering lights, malfunctioning power windows, or random warning messages, the culprit is often a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, managing everything from interior lighting and door locks to the security system and climate control. When it starts to fail, it can create a cascade of frustrating and unpredictable problems that can be difficult to diagnose.
Common Symptoms of a Failing GM Body Control Module
A faulty BCM can manifest in numerous ways. If you’re noticing any of the following issues, it’s a strong indicator that your module may need replacement:
- ✔ Erratic or non-functional interior and exterior lights (headlights, dome lights, dash lights).
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The security system engaging randomly or the vehicle refusing to start due to an anti-theft fault.
- ✔ False warnings appearing on the instrument cluster (e.g., “Service StabiliTrak,” “Service Airbag”).
- ✔ The radio or infotainment system turning on and off by itself.
- ✔ Rapid battery drain when the vehicle is parked.
From the Diagnostic Bay
We had a 2015 GMC Sierra 1500 come into the shop that was driving the owner crazy. The dash lights would flicker, the radio would cut out, and occasionally the power locks would cycle while driving. The owner had already replaced the battery and checked the alternator. After confirming all main power and ground connections were solid, we suspected the BCM. We connected our diagnostic scanner and found multiple communication loss codes with various other modules. By sending the customer’s original BCM to a programming service like this one, we were able to get a plug-and-play replacement. Once installed, all the bizarre electrical issues were gone for good. It saved the customer hundreds compared to a dealership visit.
The Simple, Plug-and-Play Solution: A Pre-Programmed BCM
Replacing a BCM isn’t as simple as just swapping the part. A new module from the dealership is a blank slate and requires expensive, specialized programming to sync it with your vehicle’s specific VIN, options, and security keys. Our service eliminates this costly and time-consuming step. We offer a straightforward mail-in programming service that makes this repair accessible to everyone.
How Our Programming Service Works
Our process is designed to be as simple and efficient as possible, getting you back on the road quickly.
- Place Your Order: Purchase this BCM programming service.
- Receive Instructions: We will contact you via the information on your order with detailed instructions on how to remove and where to ship your original BCM.
- Ship Your Original Module: Carefully package and send us your vehicle’s original BCM.
- We Transfer the Data: Upon receipt, our expert technicians will perform a full data transfer, cloning all the critical information (including VIN, mileage, and key data) from your original module to this replacement unit.
- Receive Your Ready-to-Install BCM: We ship the newly programmed BCM back to you. Installation is as simple as plugging it in. No additional programming or dealer visits are required.
Important Post-Installation Information
While our goal is a 100% plug-and-play experience, some vehicle systems may require a simple relearn procedure after the new module is installed. Please be aware of the following possibilities:
- Airbag System Sync: In some cases, the airbag warning light may illuminate after installation. This indicates a sync issue between the BCM and the airbag control module (SDM). A professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure to resolve this.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control function, a brake pedal position sensor recalibration might be necessary. This can also be performed with a capable diagnostic tool.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Guaranteed Compatibility
This BCM is a direct replacement for a wide range of GM vehicles. It is compatible with the following part numbers: 13594692, 13594768, 13593214, 13580690, 13591519, and 13594769. It fits many popular models including the Chevrolet Silverado, Tahoe, Suburban, Corvette, Impala; GMC Sierra, Yukon; Cadillac Escalade, CTS, ATS, XTS; and more from 2014 onwards. Please verify your part number before ordering to ensure a perfect match.
Frequently Asked Questions
What exactly is “cloning” or “programming” in this context?
We extract the unique, vehicle-specific data—such as the VIN, key codes, mileage, and optional feature settings—from your original BCM and flash it directly onto the replacement module. This makes the new module an identical twin of your old one, allowing the vehicle to accept it without any further programming.
Why is this service better than buying a new BCM from a dealer?
A new BCM from a dealer is a blank part that requires expensive programming with dealership-specific tools. Our service provides a module that is ready to install right out of the box, saving you the cost of dealership labor, programming fees, and the hassle of towing your vehicle.
How long does the entire process take?
Once we receive your original BCM, our programming service typically takes 1-2 business days. The total turnaround time will depend on shipping speeds to and from our facility. We will provide you with a return tracking number as soon as it ships.
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. However, if your module is severely damaged (e.g., by fire or water) and the data is unrecoverable, we will contact you to discuss other options. Please contact us before purchasing if you suspect severe damage.
Do I need special tools for installation?
For most vehicles, the BCM is located under the steering column or behind the driver’s side dash. Installation typically requires only basic hand tools like a socket set and trim removal tools. The most important part is disconnecting the vehicle’s battery before you begin.
What should I do if the airbag light is on after I install the BCM?
If the airbag light comes on, the vehicle requires an “SDM Primary Key Setup” procedure. This syncs the security information between the airbag module and the new BCM. This procedure must be done with a professional-grade bidirectional scan tool.