Are you dealing with baffling electrical issues in your 2015 GMC Sierra or another compatible GM vehicle? Flickering lights, malfunctioning power windows or locks, a security system that acts on its own, or even a frustrating no-start condition can all point to one culprit: a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can create a cascade of problems that are difficult to diagnose. This isn’t just an inconvenience; it can affect your vehicle’s safety and reliability.
Forget the expensive trip to the dealership and the associated programming fees. We offer a straightforward, cost-effective solution. This listing is for a replacement BCM that comes pre-programmed with your vehicle’s exact data. The process is simple: you purchase this service, send us your original BCM, and we transfer all the critical information—including VIN, mileage, and key data—to this replacement unit. We then ship the ready-to-install module back to you, making the repair as close to plug-and-play as possible.
Is Your Truck Showing These Symptoms?
- ✔ Intermittent or non-working power windows, door locks, or interior lights.
- ✔ The security or anti-theft system light stays on, preventing the engine from starting.
- ✔ Erratic instrument cluster behavior, with gauges dropping out or warning lights appearing randomly.
- ✔ Communication issues with other modules, often triggering diagnostic trouble codes (DTCs) like U0140, U0155, or other U-series codes.
- ✔ Horn, wipers, or radio functioning incorrectly or not at all.
- ✔ Inconsistent remote keyless entry (RKE) operation.
Case Study: A Tricky Diagnosis
I had a 2015 Sierra 1500 in my bay last month with a list of symptoms that made no sense together. The owner reported the radio would shut off randomly, the driver’s side window wouldn’t work on hot days, and sometimes the truck wouldn’t start, showing a ‘Service Theft Deterrent System’ message. A scan showed a dozen intermittent communication codes. Instead of chasing each symptom, experience pointed me to the central communications hub—the BCM. After swapping in one of our programmed modules, every single issue was resolved. It’s a classic case of how a single failing 2015 Sierra BCM can cause widespread electrical chaos.
Your Straightforward Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On most 2015 Sierra and Silverado models, the BCM is located under the steering column, on the driver’s side of the dashboard. Other models may vary (see fitment list).
- ✔ Remove Connectors: Carefully unplug all electrical connectors from the old BCM. They have locking tabs that need to be depressed. Do not force them.
- ✔ Swap the Module: Unbolt or unclip the original BCM and remove it from the vehicle. Install the new, programmed module in its place.
- ✔ Reconnect Everything: Plug all electrical connectors firmly into the new BCM and reconnect the negative battery terminal.
- ✔ Perform Final Checks: Start the vehicle and test all body functions (windows, locks, lights, radio, etc.). Refer to the post-installation procedures below if any warning lights appear.
Important Post-Installation Information
While our programming service makes this a near plug-and-play repair, some GM security and safety systems may require a final handshake after installation. Please be aware of the following:
- Airbag System Sync: If your 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: On some models, a brake pedal position sensor recalibration might be required to ensure correct brake light and traction control operation.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Guaranteed Fitment for Your GM Vehicle
This BCM is a direct replacement for part numbers 13592137, 13506935, 13506936, 13587704, and 13594764. It is confirmed to fit the following vehicles:
- 2015 Chevrolet Corvette
- 2015-2016 Chevrolet Impala (New Style)
- 2015 GMC Sierra 1500 / Denali 1500
- 2015 GMC Sierra 2500 / 3500 / Denali 2500 / Denali 3500
- 2015 Chevrolet Silverado 1500 / 2500 / 3500
- 2015 Chevrolet Suburban 1500
- 2015 Chevrolet Tahoe
- 2015 Cadillac XTS
- 2015 Cadillac Escalade / ESV
- 2015-2016 Cadillac ATS
- 2015-2016 Cadillac CTS (Sedan)
- 2015-2018 Chevrolet Sonic
- 2015 GMC Yukon / Yukon XL 1500
Frequently Asked Questions
How does the programming service work?
It’s simple. After you place your order, we will contact you with instructions to ship your original BCM to us. Once we receive it, we extract the vehicle-specific data and flash it onto the replacement module. We then ship the ready-to-install BCM back to you.
Do I need to get this programmed by a dealer?
No. The purpose of our service is to handle all the programming for you. When you receive the module back from us, it will be ready to install without needing any dealer intervention, saving you time and money.
Is this a difficult part to replace myself?
For someone with basic mechanical skills, this is a very manageable job. The BCM is typically accessible under the driver’s side dashboard. The main tasks are disconnecting the battery and carefully swapping the electrical connectors and mounting hardware.
What if my original BCM is completely dead or missing?
If your original module is non-communicative (e.g., water damaged, burned), we may still be able to recover the data. Please contact us before ordering to discuss the condition of your module. If it’s missing, we cannot perform this service.
What is the turnaround time?
We pride ourselves on a fast turnaround. The programming is typically completed and the module is shipped back out within 1-2 business days of us receiving your original BCM.
Is there a core charge?
No, there is no core charge for this service. You can keep your original module after you send it to us for the data transfer.