Restore Full Command Over Your Truck’s Electronics
If you’re dealing with bizarre electrical issues in your GMC Sierra—like headlights with a mind of their own, a dead HVAC system, or power windows that won’t budge—you’ve likely met the frustrating reality of a failing Body Control Module (BCM). As the central computer for your truck’s comfort and convenience features, a faulty BCM can cause a cascade of problems that are maddening to diagnose. This OEM-quality replacement, part number 15901388, is the definitive solution for your 2007-2011 GMC Sierra 2500 Pickup, arriving pre-programmed to your specific VIN for a true plug-and-play fix.
Forget about expensive dealership visits and the hassle of post-installation programming. We handle the complex part for you. Simply provide your vehicle’s VIN at checkout, and our experts will flash the module with the latest GM software. This ensures all factory-installed options work perfectly right out of the box, restoring the reliable performance you depend on for work and daily driving.
From the Diagnostic Bay
I’ll never forget a 2009 Sierra 2500 that came into my shop with a laundry list of electrical gremlins: intermittent radio, flickering dash lights, and a security light that wouldn’t turn off, causing a no-start condition. The owner had already replaced the battery and alternator. While the symptoms screamed ‘bad BCM,’ my first step is always to check the basics. I found a corroded ground strap under the driver’s side door, a notorious issue on these GMT900 trucks. After cleaning it, half the problems vanished, but the security issue remained. The original BCM had been damaged by the fluctuating voltage. Installing a new, properly programmed BCM like this one, combined with fixing the ground, was the complete repair that finally put the issues to rest. Always check your main grounds during the install; it can save you from a repeat failure.
Is Your Sierra Exhibiting These Symptoms?
A failing BCM can manifest in numerous ways. If your truck is showing any of these signs, this module is the likely solution. Over my 20 years as a technician, these are the most common indicators I’ve seen for a faulty Sierra 2500 Body Control Module.
- ✔ Unresponsive or erratic power windows, door locks, and interior/exterior lights.
- ✔ HVAC controls not working or the blower motor operating intermittently.
- ✔ The security system acting up, leading to no-start conditions or random alarm activation.
- ✔ An airbag warning light on the dash, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Communication errors with other modules, leading to a host of seemingly unrelated DTCs.
- ✔ Power steering assist messages or other erroneous warnings on the driver information center.
A Straightforward Guide to BCM Replacement
One of the best parts of this solution is its simplicity. For most DIYers or professional mechanics, the swap takes less than 15 minutes. The BCM is conveniently located under the driver’s side dashboard.
- Safety First: Always disconnect the negative terminal from your truck’s battery before working on any electronic components.
- Locate the Module: Find the BCM tucked away under the steering column area. It’s a black plastic box with several large multi-pin connectors.
- Disconnect and Remove: Carefully press the release tabs on each electrical connector and pull them straight out. Then, unclip the module from its mounting bracket. There are typically no bolts, just retaining clips.
- Install the New BCM: Snap the new, pre-programmed module into the mounting bracket. Firmly reconnect all electrical connectors, ensuring they click securely into place.
- Reconnect Power: Reattach the negative battery terminal and tighten it.
- Verify Functionality: Start the truck and test all body functions: lights, wipers, locks, windows, and HVAC to confirm the repair was successful. Note that some post-install procedures may be necessary (see below).
Verified Vehicle Compatibility
This module is a direct replacement for part number 15901388 and is interchangeable with a wide range of other GM part numbers, including 25844480, 25835966, 15943678, 20939137, and 22860591. It is engineered to fit a broad selection of GM trucks and SUVs from 2007-2013. Below is a partial list of confirmed applications:
GMC SIERRA 3500 PICKUP 08-11
GMC YUKON & YUKON XL 07-11
CHEVROLET SILVERADO 1500/2500/3500 08-11
CHEVROLET AVALANCHE 1500 07-11
CHEVROLET SUBURBAN 1500/2500 07-11
CHEVROLET TAHOE 07-11
CADILLAC ESCALADE / ESV / EXT 07-11
This is not an exhaustive list. If your part number matches one of the interchanges, this module will work for your vehicle. Our VIN programming ensures it is configured for your exact model and options.
Frequently Asked Questions
Do I need to do any programming after I install this?
No. This Body Control Module comes fully programmed to your vehicle’s VIN. In most cases, it is a simple plug-and-play installation with no further action required from a dealer or mechanic.
What if my airbag light is still on after installation?
If the airbag light persists (often with code B1001), a ‘Setup SDM Primary Key in BCM’ relearn procedure is required. This syncs the new BCM with the airbag system and must be done with a professional-grade scan tool.
Is a core charge required for my old part?
No, there is no core charge. You can keep your old module without any need to send it back, saving you time and money on return shipping.
What tools are needed for the installation?
For most models, no special tools are required. The module is held in by clips and the connectors have simple release tabs. The entire process can usually be completed in under 15 minutes.
Will this fix my specific problem, like the radio not working?
The BCM controls a wide range of functions, including the radio, lights, and locks. If you are experiencing multiple, seemingly random electrical issues, a failing BCM is a very common cause. This part is designed to resolve those root problems.