Tired of Your Truck’s Electrical Gremlins?
If your 2013 GMC Sierra 2500 is acting possessed—with flickering lights, a dead A/C blower, or power locks with a mind of their own—you’ve likely met the common culprit: a failing Body Control Module (BCM). As the nerve center for your truck’s comfort and convenience features, a faulty BCM can cause a cascade of frustrating issues. This isn’t just an annoyance; it can affect vehicle security and safety. This replacement Body Control Module, corresponding to part number 15901388, is the definitive solution to restore full functionality and peace of mind.
I once had a 2011 Silverado 2500 in the shop with a textbook case of what the owner thought was a bad ground. The radio would cut out, the dome light would flicker, and the power windows worked only when they felt like it. He’d spent a weekend cleaning every ground he could find. When he brought it to me, my scanner pulled a half-dozen communication codes, all pointing back to the BCM. These modules are notorious for internal failures that mimic grounding problems. We swapped in a VIN-programmed BCM, and within 10 minutes, every single issue was resolved. It’s a reminder that sometimes the most complex-seeming electrical problems have a very straightforward, central solution.
Is Your GM Truck Showing These Signs of BCM Failure?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Unresponsive or intermittent power windows, door locks, or mirrors.
- ✔ HVAC system failures, such as the blower motor not working or being stuck on one speed.
- ✔ The security system acting up, causing no-start conditions or random alarm triggers.
- ✔ An illuminated airbag light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Erratic interior or exterior lights (headlights, taillights, dome light).
- ✔ Wipers that won’t turn on, off, or operate correctly.
The Smart Solution: A Pre-Programmed Module
The biggest hurdle in replacing a BCM has always been the mandatory, and often costly, trip to the dealership for programming. We eliminate that step entirely. We will pre-program this module to your vehicle’s specific VIN before shipping it. This ensures that it communicates flawlessly with your truck’s other systems right out of the box. This is the most efficient way to perform the repair, whether you’re a seasoned mechanic or a determined DIYer looking to save on labor costs. This is a direct-fit replacement for your original 2013 Sierra 2500 BCM and other compatible models.
Your 5-Minute Path to a Fully Functional Truck
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the BCM: On most GM trucks and SUVs from this era, the BCM is located under the driver’s side dashboard, near the steering column. It’s typically a black box with several large multi-pin connectors.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once unplugged, unclip or unbolt the old module from its mounting bracket.
- ✔ Install the New Module: Seat the new, pre-programmed BCM into the mounting bracket and firmly reconnect all electrical connectors until they click into place.
- ✔ Reconnect and Test: Reconnect your battery terminal. Start the vehicle and test all functions: lights, locks, windows, wipers, and HVAC to confirm the repair was successful.
Important Post-Installation Notes
In some cases, especially if you had an airbag light on, an additional step may be needed. If the airbag warning light persists after installation, a professional scan tool is required to perform the “Setup SDM Primary Key in BCM” function. This syncs the new BCM with the airbag system. Additionally, some models may require a Brake Pedal Position sensor relearn to ensure proper brake light and stability control operation. And remember, there is absolutely no core charge—you can keep or discard your old part without any hassle.
Verified Fitment for Your GM Truck or SUV
This module is a direct replacement for part number 15901388 and is interchangeable with several other part numbers, including 25844480, 25835966, 15263363, 15943678, 20939137, and 22860591. It is confirmed to fit the following vehicles:
ESCALADE & ESV & EXT 07-11
SIERRA 1500 PICKUP 07-11
SIERRA 2500 & 3500 PICKUP 07-13
SIERRA DENALI 07-13
SILVERADO 1500 PICKUP 07-11
SILVERADO 2500 & 3500 PICKUP 07-13
SUBURBAN 1500 & 2500 07-11
TAHOE 07-11
YUKON & YUKON XL 07-11
Note: For 2007 models, this fits the ‘new style’ with a smooth door skin. For 2010 and 2013 models, please verify your original part ID is 25835966 for a guaranteed match.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean for me?
It means you get a part that’s ready for installation right out of the box. We load your vehicle’s specific information onto the module, so it works seamlessly without requiring an expensive programming session at a dealership. It’s a true plug-and-play fix.
Is this a difficult part to replace myself?
Not at all. For most DIYers with basic tools, this is a very straightforward job. The BCM is typically easy to access under the dashboard, and the replacement process usually takes less than 15 minutes.
My airbag light is on with a B1001 code. Will this fix it?
Yes, a faulty BCM is a very common cause of the B1001 code. Replacing the module will resolve the root cause. However, you may need to perform the ‘Setup SDM Primary Key’ procedure with a high-end scan tool after installation to clear the light from the dash.
Do I need to send my old BCM back for a core charge?
No. We do not require a core return for this part. There is no core charge, which simplifies your purchase and saves you the hassle of shipping your old module back.
What kind of warranty is included?
This Body Control Module comes with a one-year warranty, giving you confidence and peace of mind in the quality and durability of your repair.