Tired of Unpredictable Electrical Problems in Your Cadillac?
Is your 2015-2016 Cadillac CTS acting possessed? One minute the power windows don’t work, the next the radio is on the fritz, or worse, you’re dealing with a no-start condition that leaves you stranded. These frustrating, intermittent issues often point to one central culprit: a failing Body Control Module (BCM). As the electronic nerve center of your vehicle, the BCM manages everything from your interior lights and power locks to the security system. When it fails, it can create a cascade of confusing problems.
For over 20 years, I’ve seen countless drivers and shop owners get frustrated by BCM failures. The traditional fix involves a new module, a tow to the dealership, and several hundred dollars in programming fees. We offer a smarter, more efficient solution. This is a replacement BCM that comes fully programmed with your vehicle’s original data. Simply send us your old BCM, and we’ll transfer its DNA—the VIN, mileage, and key information—to this replacement unit. We ship it back to you ready for a simple, plug-and-play installation. No dealer visit, no expensive programming tools needed.
I remember a 2015 Sierra that came into the shop with the strangest set of symptoms. The owner said his dash lights would flicker randomly, the horn would honk when he used the turn signal, and sometimes the truck wouldn’t recognize his key fob. He’d already replaced the battery and checked all the fuses. After hooking up the scan tool, I saw a storm of communication error codes (U-codes) pointing to a network problem. The data pointed straight to the BCM. Instead of a costly new unit from the dealer, we used a cloned module just like this one. Once installed, every single electrical gremlin vanished. It’s a textbook example of how a faulty 2015-2016 CTS BCM or its equivalent in other GM models can cause chaos, and how a pre-programmed module is the cleanest fix.
Is Your Vehicle Showing These Symptoms?
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system acting up, causing alarm issues or no-start conditions.
- ✔ The key fob is not being recognized by the vehicle.
- ✔ Multiple, unrelated warning lights on the dashboard.
- ✔ Communication error codes, such as U0100, U0140, or other U-series faults.
- ✔ Inconsistent A/C and climate control operation.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the BCM: On the 2015-2016 Cadillac CTS, the BCM is typically located in the left-hand (driver’s side) of the dashboard. For other models, its location can vary (e.g., under the steering column, on the firewall), so consult a service manual if you’re unsure.
- ✔ Remove the Old Module: Carefully disconnect all electrical connectors from the original BCM. Note their orientation. Then, unbolt the module from its mounting bracket.
- ✔ Install the New Module: Mount your pre-programmed replacement BCM in the same location and securely reconnect all the electrical connectors. Ensure 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, radio, etc.—to confirm the repair.
Important Post-Installation Notes
With our cloning service, your new 2015-2016 CTS BCM is designed to be plug-and-play. However, in some GM vehicles, certain systems may require a quick sync-up. If your airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Additionally, a Brake Pedal Position Relearn might be necessary for proper brake light and traction control function. These are simple procedures for any qualified technician. And remember, there is no core charge, so you can keep your original module.
Will This Fit My Vehicle?
This Body Control Module is a direct replacement for part number 13587704 and is interchangeable with part numbers 13592137, 13506935, 13506936, and 13594764. It is verified to fit the following GM vehicles:
- Cadillac ATS: 2015, 2016
- Cadillac CTS: 2015, 2016
- Cadillac Escalade / ESV: 2015
- Cadillac XTS: 2015
- Chevrolet Corvette: 2015
- Chevrolet Impala: 2015-2016 (New Style)
- Chevrolet Silverado 1500/2500/3500: 2015
- Chevrolet Sonic: 2015-2018
- Chevrolet Suburban 1500: 2015
- Chevrolet Tahoe: 2015
- GMC Sierra 1500/2500/3500 & Denali Models: 2015
- GMC Yukon / Yukon XL 1500: 2015
Always match your part number or consult your mechanic to ensure proper fitment. This 2015-2016 CTS BCM is a reliable solution for a wide range of popular GM models.
Frequently Asked Questions
How does the programming service work?
After you purchase, we will contact you with instructions to ship your original BCM to us. Once we receive it, we extract the vehicle-specific data and transfer it to the replacement module. We then ship the ready-to-install BCM back to you.
Do I need to send my keys?
No, you do not need to send your keys. All the necessary security information is stored within your original BCM, which is what we clone.
Is this a plug-and-play solution?
Yes, in over 95% of cases, this is a completely plug-and-play fix. In rare instances, as noted in the description, a minor relearn procedure like an airbag sync may be needed, which can be done by a local shop.
What is the turnaround time?
We typically program and ship your replacement BCM within 1-2 business days of receiving your original module. You will receive tracking information as soon as it ships.
What if I don’t see my exact vehicle listed?
The most important thing is to match the part number. If your original BCM has part number 13587704 or one of the listed interchange numbers, this module will work for your vehicle.