Restore Your Truck’s Electrical System with a Hassle-Free Solution
If you’re dealing with bizarre electrical issues in your 2015 Sierra 3500 HD—like lights flickering for no reason, power windows with a mind of their own, or a security light that won’t turn off—chances are the Body Control Module (BCM) is the culprit. As the central command for your truck’s body electronics, a failing BCM can cause a cascade of frustrating and seemingly unrelated problems. The dealership solution often involves a brand new module, costly programming fees, and significant vehicle downtime. We offer a smarter, more efficient fix.
This is a replacement BCM that comes perfectly programmed through our professional cloning service. By transferring the essential data from your original module directly to this unit, we eliminate the need for any additional programming or key relearning procedures. Once you receive it back from us, the installation is a straightforward swap. This service is designed to get your hard-working truck back on the road quickly and reliably, saving you time and money.
Case Study: The Ghost in the Sierra
A contractor brought his ’15 Sierra 3500 into my bay last month with a list of complaints that sounded like a haunted truck. The radio would randomly shut off, the dome light would flicker while driving, and occasionally, the power locks wouldn’t respond. He’d already replaced the battery and checked grounds. After running diagnostics, I found several communication loss codes (U0140, U0155) pointing to an intermittent BCM. Instead of a costly new module and programming from scratch, we used our cloning service. He mailed in his BCM, we transferred the data to a replacement unit, and sent it back. He installed it himself in under 30 minutes. The ‘ghost’ was gone, and his truck has been solid ever since. This is the power of a direct data transfer.
Is Your Sierra Showing These BCM Failure Signs?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is your likely solution:
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The security system light is on, or the alarm randomly triggers.
- ✔ The vehicle won’t start, and the starter doesn’t engage (security-related).
- ✔ Diagnostic trouble codes (DTCs) related to communication loss with other modules, such as U0140, U0100, or B1325.
- ✔ Inconsistent operation of the horn, wipers, or radio controls.
Your Straightforward BCM Installation Guide
Once you receive the programmed module back from us, installation is simple. On most GM trucks, the BCM is located under the steering column on the driver’s side. While specific steps can vary slightly, here is a general guide:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Remove any lower dash panels or trim necessary to gain clear access to the BCM. It’s typically a black box with multiple large wiring connectors.
- Disconnect the Old BCM: Carefully unplug all wiring harnesses from the original module. Most connectors have a locking tab that needs to be pressed or lifted to release.
- Remove the Module: Unbolt or unclip the old BCM from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed module in the same location and securely reconnect all wiring harnesses. You should hear a ‘click’ as they lock into place.
- Final Steps: Reinstall the dash panels and reconnect the negative battery terminal.
Important Post-Installation Checks
Our cloning service makes this a true plug-and-play repair. However, in some GM vehicles, a couple of quick sync procedures may be needed after installation. These are not always required but are good to be aware of:
- Airbag System Sync: If you see an airbag warning light after installation, a technician will need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool. This syncs the BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure proper brake light and traction control operation. This is also done with a diagnostic tool.
Disclaimer: We always recommend consulting a factory service manual or a qualified professional for vehicle-specific instructions.
Verified Fitment for Your GM Vehicle
This BCM cloning service is compatible with a wide range of GM cars and trucks. Please verify that your vehicle and original part number are on this list. This module is a direct replacement for part numbers 13594692, 13594768, 13593214, 13580690, 13591519, and 13594769.
- Cadillac ATS: 2014
- Cadillac CTS: 2014 (Sdn, VIN A)
- Cadillac Escalade / ESV: 2015
- Cadillac XTS: 2014
- Chevrolet Caprice / SS Caprice: 2014-2017
- Chevrolet Corvette: 2014
- Chevrolet Impala: 2015-2019 (New Style)
- Chevrolet Silverado 1500: 2014
- Chevrolet Silverado 2500 / 3500: 2015
- Chevrolet Suburban 1500: 2015
- Chevrolet Tahoe: 2015
- GMC Sierra 1500 / Denali 1500: 2014
- GMC Sierra 2500 / 3500 / Denali 2500 / Denali 3500: 2015
- GMC Yukon / Yukon XL 1500: 2015
Frequently Asked Questions
How does the mail-in cloning service work?
It’s simple. After you place your order, we will contact you with instructions to ship your original BCM to our facility. Once we receive it, our technicians will transfer all the critical vehicle data to the replacement module and ship it back to you, ready for installation.
Will I need to program this BCM at the dealership?
No. The entire point of our service is to avoid dealer programming. Because we clone your original module’s data, the replacement unit is 100% plug-and-play for your specific vehicle.
Is there a core charge for this part?
No, there is no core charge. We require your original module to perform the data transfer, but you are welcome to keep it afterward if you wish.
Do I need to send my keys with the module?
No, you do not need to send your keys. All the necessary security information is stored within the BCM itself, and our cloning process transfers it perfectly.
What is the typical turnaround time?
We perform the programming service the same day we receive your module. We will then ship it back to you, and you’ll receive a tracking number at that time. Total time depends on shipping speeds to and from our location.
What if my airbag light comes on after I install it?
This is uncommon, but if it happens, it means the BCM needs to be electronically ‘introduced’ to the airbag module (SDM). A repair shop with a professional scan tool can perform the ‘Setup SDM Primary Key’ function in a few minutes to resolve this.