Are you dealing with baffling electrical issues in your Cadillac or GM vehicle? One minute the power windows work, the next they don’t. Maybe your interior lights have a mind of their own, or the security system is preventing the car from starting. As a technician with over 20 years of experience, I can tell you these are classic signs of a failing Body Control Module (BCM). It’s the central hub for your vehicle’s body electronics, and when it goes bad, it can cause a cascade of frustrating, seemingly unrelated problems.
This isn’t just a part; it’s a complete, hassle-free solution. We offer a professionally programmed Body Control Module that eliminates the need for expensive dealership visits and complex programming tools. The process is simple: you purchase this service, ship your original BCM to us, and we handle the rest. We will expertly transfer all the critical data—including VIN, mileage, and key information—from your original module to this replacement unit. When you receive it back, it’s a true plug-and-play installation, restoring your vehicle’s functions precisely as they were.
A Technician’s Notebook
I remember a 2015 GMC Sierra that came into the shop with the strangest symptoms. The owner complained that his radio would randomly shut off, the dome light would flicker while driving, and sometimes the power door locks wouldn’t respond. He’d already replaced the battery and checked all the fuses. A quick scan showed a dozen communication codes (U-codes) pointing to a network failure. Instead of chasing electrical gremlins for hours, experience pointed me straight to the BCM. These modules are notorious for internal solder joint failures that cause intermittent connections. By swapping in a pre-cloned BCM, we had the truck fixed in under an hour, saving the customer hundreds in diagnostic time. This is the exact problem our service is designed to solve.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) staying on or not turning on at all.
- ✔ The vehicle’s security system acting up, causing a no-start condition.
- ✔ Horn, windshield wipers, or radio functioning intermittently.
- ✔ Multiple communication Diagnostic Trouble Codes (DTCs), often starting with ‘U’ (e.g., U0140, U0155).
- ✔ False warnings appearing on the dashboard information center.
A Straightforward Guide to Installation
- ✔ Step 1: Safety First. Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- ✔ Step 3: Ship Your Module. After your purchase, we will contact you with simple instructions for shipping your original BCM to our facility. Please ensure your contact information is correct at checkout.
- ✔ Step 4: Install the Programmed Unit. Once you receive the cloned BCM back from us, simply mount it in place, reconnect the wiring harnesses, and re-attach the negative battery terminal. Your vehicle’s functions should be fully restored.
Post-Installation Notes
In most cases, this is a direct plug-and-play repair. However, on some GM models, additional steps may be needed:
- Airbag System Sync: If the airbag warning light is on 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.
- Brake Pedal Position Relearn: Some vehicles may require a brake pedal position sensor relearn to ensure proper brake light and traction control operation.
- Disclaimer: Always consult a factory service manual or a qualified technician if you are unsure about any procedure.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 13587704 and is interchangeable with part numbers 13592137, 13506935, 13506936, and 13594764. It is guaranteed to fit the following 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
Frequently Asked Questions
What exactly is a “cloning” service?
Cloning is the process of reading all the essential, vehicle-specific software from your original BCM and writing it directly onto the replacement unit. This includes the VIN, security information, and other settings, making the new module work immediately upon installation without any additional programming.
Do I need to send my original part to you?
Yes. This service requires you to ship your original BCM to us. We cannot program the replacement module without the data from your original part. We will contact you with shipping instructions after your order is placed.
Is there a core charge for my old BCM?
No, there is no core charge. Since we need your original module to perform the programming service, you will not be charged a core fee and will not receive the old part back.
How long does the programming service take?
We typically program and ship your replacement BCM within 1-2 business days of receiving your original module. You will receive a tracking number as soon as it ships.
Will this fix my specific problem?
This part is a solution for a faulty BCM. If your vehicle has been properly diagnosed with a failed BCM that matches the listed part numbers, this service will resolve the issues caused by that failure. It will not fix problems related to other faulty components or wiring.