Restore Your Tahoe’s Electrical System with a Hassle-Free Solution
Are you dealing with baffling electrical issues in your 2015 Chevy Tahoe or another GM vehicle? One minute the power windows work, the next they don’t. Maybe the radio is acting possessed, the security light is flashing for no reason, or worse, the vehicle won’t start at all. As a technician with over two decades of experience, I’ve seen these exact frustrations hundreds of time. Often, the culprit isn’t a dozen different faulty components—it’s one: the Body Control Module (BCM).
The BCM is the central nervous system for your vehicle’s comfort and convenience features. When it fails, it can create a cascade of confusing and intermittent problems. Taking it to the dealership often means expensive diagnostic fees, a hefty bill for a new module, and hours of programming charges. Our service is designed to bypass that entire headache. We provide a fully tested replacement BCM that is programmed specifically for your vehicle using the data from your original module. This makes the repair process straightforward and significantly more affordable.
Case Study: A Tricky Diagnosis
A customer brought in a 2015 Sierra 1500 with a complaint that was driving him crazy. The truck would randomly refuse to start, but only in the mornings. The dash lights would flicker, and the key fob was unresponsive. He had already replaced the battery and checked the alternator. After hooking up my scan tool, I saw a handful of U-codes (U0100, U0140), indicating a loss of communication between modules. Instead of just throwing parts at it, we inspected the BCM connections and found no issues. The root cause was internal failure within the BCM itself, causing it to intermittently drop communication. By cloning his original BCM to our replacement unit, we solved all the electrical gremlins in one go, saving him from a costly and frustrating diagnostic journey at the dealer.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ The security system light flashing, preventing the engine from starting.
- ✔ Key fobs that suddenly stop working.
- ✔ Dashboard warning lights appearing randomly (e.g., ABS, Airbag, Traction Control).
- ✔ Communication error codes, typically starting with ‘U’ (e.g., U0140 – Lost Communication With Body Control Module).
- ✔ Complete no-start condition where the vehicle has power but won’t crank.
Your Straightforward BCM Swap Guide
Our cloning service makes this a simple component swap. Once you receive the programmed module from us, the physical installation is all that’s left. While the BCM location varies slightly by model (see fitment list), the general process is the same.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On most trucks and SUVs like the 2015 Tahoe, the BCM is located under the driver’s side of the dashboard, near the steering column.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once unplugged, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your pre-programmed replacement BCM in the same location. Reconnect all electrical connectors, ensuring they click securely into place.
- Reconnect Power: Reattach the negative battery terminal.
- Test Functionality: Start the vehicle and test all the body functions—windows, locks, lights, radio, etc.—to confirm the repair was successful.
Important Post-Installation Information
Because your vehicle’s critical data is cloned, most functions will work immediately. However, in some cases, additional sync procedures may be required. This is a normal part of vehicle security and safety systems.
- Airbag System Sync: If your airbag light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This re-establishes the secure handshake between the airbag system and the new BCM.
- Brake Pedal Position Relearn: On certain models, a brake pedal position sensor relearn may be necessary to ensure perfect brake light operation and traction control stability.
We are committed to your success. Please note that specific procedures can vary. Always consult a factory service manual or a qualified technician if you are unsure about any step.
Verified Fitment For Your GM Vehicle
This BCM is a direct-fit replacement for units with part numbers 13592137, 13506935, 13506936, 13587704, or 13594764. It is compatible with the following vehicles and options:
- ATS: 2015 (on firewall), 2016 (on firewall, ID 13587704)
- Corvette: 2015 (LH dash)
- CTS: 2015 (Sdn, LH dash), 2016 (LH dash, ID 13587704)
- Escalade / Escalade ESV: 2015 (under steering column, w/model year break point opt AVF)
- Impala: 2015-2016 (VIN 1, New Style, LH dash, ID 13587704)
- Sierra 1500 / Denali 1500: 2015 (under steering column)
- Sierra 2500 / 3500 & Denali 2500 / 3500: 2015 (under steering column or LH firewall, ID 13587704)
- Silverado 1500: 2015 (under steering column)
- Silverado 2500 / 3500: 2015 (under steering column, ID 13587704)
- Sonic: 2015-2018 (RH rear quarter panel)
- Suburban 1500: 2015 (under steering column, w/model year break point opt AVF)
- Tahoe: 2015 (under steering column, w/model year break point opt AVF)
- XTS: 2015 (left front hinge pillar)
- Yukon / Yukon XL 1500: 2015 (under steering column, w/model year break point opt AVF)
Frequently Asked Questions
Frequently Asked Questions
How does the mail-in cloning service work?
It’s simple! After you purchase, we’ll contact you with instructions to ship your original BCM to us. Once we receive it, our technicians will transfer all the critical data (VIN, key codes, mileage, options) to the replacement module. We then ship the ready-to-install BCM back to you, typically within 1-2 business days.
What if my original BCM is water damaged or won’t communicate?
In many cases, even if the module is non-functional, we can still extract the necessary data from the memory chip. Please contact us before ordering if your module has severe physical or water damage so we can confirm the likelihood of a successful data recovery.
Will I need to have this programmed by a dealer after I install it?
No. The entire point of our service is to eliminate the need for dealer programming. Because we clone your original data, the vehicle will recognize the new module as its own, making it a plug-and-play installation.
Is there a core charge or do I need to send my old part back?
There is no core charge for this item. We only need your original module to perform the programming service. You can keep your original module after the service is complete.
Will this fix my exact problem?
This part will fix any issue directly caused by a faulty BCM. While the symptoms we’ve listed are very common indicators, we always recommend a proper diagnosis by a qualified mechanic to confirm the BCM is the root cause before you buy.