Restore Full Functionality and End Electrical Frustration
As a technician with over two decades of experience, I’ve seen firsthand how a failing Body Control Module (BCM) can turn a reliable vehicle into a source of constant headaches. One minute your turn signals work, the next they don’t. Your power windows might have a mind of their own, or worse, the vehicle won’t start at all. These aren’t random glitches; they’re classic signs of a BCM failure. This Programmed BCM 13587704 is the definitive, hassle-free solution to restore your vehicle’s complex electrical systems to perfect working order.
The BCM is the central command center for your vehicle’s body electronics. It controls everything from the interior lights and power locks to the security system and communication between other vital modules. When it fails, it creates a cascade of confusing problems. Our service eliminates the guesswork and the exorbitant costs associated with dealership repairs. We provide a professionally programmed BCM that is truly plug-and-play, getting you back on the road with confidence.
A Technician’s Notebook: The 2015 Sierra with a Mind of Its Own
A customer brought in a 2015 Sierra 1500 that was driving him crazy. The dome lights would flicker, the radio would randomly shut off, and he’d get intermittent “Service StabiliTrak” messages. He’d already replaced the battery and checked the main grounds. When I connected my scan tool, I found a slew of U-codes (communication errors), all pointing back to one culprit. The BCM was failing intermittently, flooding the data network with corrupted information. Instead of a costly new module and a full vehicle reprogram at the dealer, we used a cloned BCM. The customer mailed in his original, we transferred the data, and sent the replacement back. He installed it in his driveway in under an hour, and every single electrical gremlin was gone. This is the power of a correctly programmed module.
Is Your Vehicle Experiencing These BCM Failure Symptoms?
A faulty BCM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your module needs attention. Often, you’ll see communication-related Diagnostic Trouble Codes (DTCs), such as U0140, U0155, or other U-codes pointing to lost communication.
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or failing to turn on.
- ✔ The anti-theft or security system preventing the vehicle from starting.
- ✔ Instrument panel gauges behaving strangely or going dark.
- ✔ The horn honking unexpectedly or not working when pressed.
- ✔ Key fobs that suddenly stop working.
- ✔ False warnings appearing on the driver information center.
How Our Simple Plug-and-Play Service Works
We’ve streamlined the repair process to be as simple as possible. Forget about towing your vehicle or waiting for a dealership appointment. Our mail-in programming service for the Programmed BCM 13587704 is designed for both DIYers and professional shops.
- Place Your Order: Complete your purchase. We will contact you with clear, step-by-step instructions for shipping your original BCM to our facility.
- We Handle the Programming: Once we receive your original module, our expert technicians will extract the unique vehicle data. This data is then securely transferred to a fully tested replacement BCM. This cloning process ensures all your vehicle’s specific options and security information are retained.
- Receive Your Ready-to-Install Module: We ship the newly programmed BCM back to you, typically within one business day of receiving your original. You’ll receive tracking information so you know exactly when it will arrive. The best part? There’s no core charge, so you can keep your original module.
Your Straightforward Installation Guide
Installing your pre-programmed BCM is a manageable task for anyone with basic tools. The location can vary, but it’s typically found in the cabin area. Always refer to a service manual for your specific model’s location.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the BCM: On most GM trucks and SUVs, it’s under the steering column or on the driver’s side firewall/kick panel area. On sedans like the CTS or ATS, it may be in the dash or on a hinge pillar.
- Remove the Connectors: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that need to be depressed or lifted. Do not force them.
- Swap the Modules: Unbolt or unclip the old BCM and remove it. Mount your new, pre-programmed module in its place.
- Reconnect Everything: Plug all the electrical connectors firmly into the new BCM. You should hear or feel a click. Reconnect the negative battery terminal.
- Test Functionality: Start the vehicle and test all the functions that were previously malfunctioning—lights, windows, locks, etc.
Important Post-Installation Notes
In some cases, additional steps may be required after installation:
- Airbag System Sync: If the airbag 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 models may require a brake pedal position sensor recalibration to ensure proper brake light and traction control operation.
Disclaimer: Vehicle systems are complex. For the most accurate procedures for your specific VIN, always consult a factory service manual or a certified automotive technician.
Verified Compatibility for Your Vehicle
This service is guaranteed to work for BCMs with part number 13587704 or any of the following interchangeable numbers: 13592137, 13506935, 13506936, and 13594764. It fits a wide range of popular GM models:
- Cadillac: 2015-2016 ATS, 2015-2016 CTS, 2015 Escalade / ESV, 2015 XTS
- Chevrolet: 2015 Corvette, 2015-2016 Impala (New Style), 2015 Silverado 1500/2500/3500, 2015-2018 Sonic, 2015 Suburban 1500, 2015 Tahoe
- GMC: 2015 Sierra 1500/2500/3500, 2015 Sierra Denali 1500/2500/3500, 2015 Yukon / Yukon XL 1500
Frequently Asked Questions
Why do I need to send you my original BCM?
Your original BCM contains vital security data (immobilizer) and vehicle-specific configuration files. By cloning this data, we create a true plug-and-play replacement. This avoids the need for expensive and complex programming procedures at a dealership, which often require the vehicle to be present.
How long does the process take?
We program and ship your replacement BCM within 24-48 hours of receiving your original module. The total turnaround time will depend on shipping speeds to and from our facility.
Is this difficult to install myself?
For most DIYers with basic tools, the physical installation is straightforward. The BCM is usually accessible inside the cabin. Our service handles the most difficult part—the programming—for you.
Will I need to do anything after installation?
In most cases, no. It’s plug-and-play. However, as noted, some vehicles may require an airbag system sync or brake pedal position relearn if specific warning lights appear. These procedures require a professional-grade scan tool.
What if my part number is slightly different?
This module and service are compatible with part numbers 13592137, 13506935, 13506936, 13587704, and 13594764. If your part number matches any of these, this is the correct solution for you.