Is Your GM Vehicle Plagued by Electrical Gremlins?
Are you dealing with flickering lights, power windows that have a mind of their own, a security system that won’t cooperate, or a car that intermittently refuses to start? These frustrating and unpredictable issues often point to a single culprit: a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, managing everything from your interior lights and power locks to your instrument cluster and security system. When it starts to fail, it can create a cascade of bizarre electrical problems that can be difficult to diagnose.
The Dealership-Free Solution for Your BCM Failure
Replacing a BCM isn’t as simple as swapping out a fuse. Each module is programmed specifically to your vehicle’s Vehicle Identification Number (VIN) and its unique set of options. A new BCM from the dealership requires expensive programming with specialized tools. Our service bypasses that completely. We provide a fully tested, replacement BCM that is programmed by cloning the data from your original module. This makes the installation process straightforward, saving you time, money, and the hassle of a trip to the dealer.
From the Diagnostic Bay
We had a 2015 Chevy Silverado come in with the strangest set of symptoms. The customer complained that sometimes his radio would shut off, his dome lights would flicker, and occasionally the truck would be completely dead in the morning. He’d already replaced the battery twice. After checking the charging system and for parasitic draws, we noticed the draw was intermittent and seemed to originate from the BCM circuit. The module wasn’t fully shutting down, causing a slow drain. By cloning his original data to one of our replacement units, we solved all the electrical gremlins in one shot. It’s a classic case of how a failing BCM can mimic a bad battery.
How Our Mail-In Cloning Service Works
Our process is designed to be simple and get you back on the road quickly:
- Place Your Order: Complete your purchase through our secure checkout. Please ensure your contact information is accurate.
- We Contact You: After your order is placed, one of our specialists will contact you with clear instructions and the shipping address for sending us your original BCM.
- Ship Your Original BCM: Carefully package and ship your vehicle’s original Body Control Module to us.
- We Clone and Ship: Once we receive your module, our technicians will professionally transfer all the critical data (VIN, key data, options) to the replacement unit. We then ship the newly programmed module back to you, typically within 1-2 business days.
Symptoms of a Failing Sonic Body Control Module
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic behavior from interior or exterior lighting (flickering, staying on, or not turning on).
- ✔ Instrument cluster gauges behaving incorrectly or warning lights appearing without cause.
- ✔ Malfunctions with the vehicle’s security system or keyless entry.
- ✔ Unexplained battery drain that leads to a no-start condition.
- ✔ Communication issues with other vehicle modules, often triggering multiple diagnostic trouble codes (DTCs).
Installation and Post-Install Notes
Because we clone your original module’s data, the replacement BCM is designed to be a direct fit. Simply disconnect the battery, remove your old BCM, and install the new one. Reconnect the battery, and your vehicle should be back to normal. However, in some GM vehicles, additional steps may be required:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool must be used to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system. This is only needed if the light appears.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor recalibration might be necessary to ensure correct brake light operation and traction control functionality.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Compatible Part Numbers:
This module is a direct replacement for the following part numbers: 13592137, 13506935, 13506936, 13587704, 13594764. Please ensure one of these numbers is printed on your original module.
Frequently Asked Questions
What is a cloning service and why do I need it?
Cloning is the process of transferring your vehicle’s specific programming—like the VIN and security information—from your original BCM to the replacement one. This is essential because it makes the new module plug-and-play, avoiding costly and complex programming at a dealership.
How long does the process take after you receive my module?
We typically complete the programming and ship your replacement module back out within 1-2 business days of receiving your original BCM.
Is this BCM truly plug-and-play?
Yes, in over 95% of cases, it is completely plug-and-play. In rare instances, as noted above, a simple relearn procedure like an airbag sync may be required, which can be done with a professional scan tool.
What if my original BCM is water damaged or completely dead?
In many cases, even with significant damage, we can still extract the necessary data. Please contact us before ordering if your module has severe water or fire damage so we can assess the likelihood of a successful data recovery.
Do I need to send my keys?
No, you do not need to send your keys. All the necessary immobilizer and key data is stored within the BCM itself, which we will transfer during the cloning process.