End the Electrical Headaches in Your GMC Sierra 2500
If you’re dealing with bizarre electrical issues in your truck—like wipers that won’t turn off, power windows with a mind of their own, or a dashboard that lights up with random warnings—you’re not alone. These are classic signs of a failing Body Control Module (BCM), the electronic nerve center of your vehicle’s comfort and convenience features. This replacement Body Control Module, part number 15901388, is the definitive solution for your 2007-2011 Sierra 2500 BCM problems. We pre-program it to your truck’s VIN, so it’s ready for a simple, plug-and-play installation right out of the box, saving you a costly trip to the dealership.
Case Study: A Tricky Diagnosis
I remember a 2009 Sierra 2500 HD that came into my shop. The owner, a contractor, was frustrated because his work truck’s interior lights would flicker and the radio would cut out intermittently. He’d already replaced the battery and checked the main grounds. Diagnostics showed a few communication codes, but nothing pointed directly to one component. From experience, I knew these ghost-like issues on the GMT900 platform often trace back to the BCM. We installed a VIN-programmed module, and in less than 15 minutes, every single one of his electrical gremlins was gone. It’s a common failure point, and a new BCM is often the fastest path to a reliable fix.
Is Your Sierra 2500 Showing These Electrical Faults?
A faulty BCM can cause a wide range of frustrating symptoms. If your truck is experiencing any of the following, this module is the likely solution:
- ✔ Power windows, door locks, or mirrors not working or operating erratically.
- ✔ Interior dome lights or exterior lamps staying on or not turning on at all.
- ✔ HVAC system issues, such as the blower motor not working or temperature controls being unresponsive.
- ✔ The security system acting up, causing no-start conditions or false alarms.
- ✔ An airbag warning light on the dash, often with a DTC B1001 (Setup SDM Primary Key in BCM) stored.
- ✔ Intermittent stalling, misfires, or other seemingly unrelated engine performance problems tied to poor data communication.
A Straightforward Guide to Installation
Installing your new 2007-2011 Sierra 2500 BCM is a job most owners can handle in their own driveway. The entire process typically takes less than 15 minutes.
- Safety First: Always disconnect the negative terminal from your truck’s battery before working on any electronic components.
- Locate the BCM: On these Sierra models, the BCM is located under the driver’s side of the dashboard, usually to the left of the steering column. You may need to remove a lower dash panel for access.
- Swap the Module: The BCM is held in place by retaining clips. Carefully disconnect the multiple wiring harness connectors—they have locking tabs you’ll need to press. Unclip the old module and clip the new one in its place.
- Reconnect Everything: Firmly plug all wiring connectors into the new BCM. You’ll hear a click when they are secure. Reconnect the negative battery terminal.
- Post-Installation Checks: Start the vehicle and test all functions: lights, wipers, locks, windows, and HVAC. In most cases, everything will work immediately. If the airbag light remains on, a special procedure is required (see FAQ).
Verified Vehicle Compatibility
This module is a direct replacement for part number 15901388 and other interchangeable numbers. It is guaranteed to fit the following vehicles:
CADILLAC ESCALADE, ESV, EXT 07-11
CHEVROLET SILVERADO 1500/2500/3500 PICKUP 07-13
GMC SIERRA 1500/2500/3500 PICKUP 07-13
GMC SIERRA DENALI 1500/2500/3500 07-13
CHEVROLET SUBURBAN 1500/2500 07-11
CHEVROLET TAHOE 07-11
GMC YUKON & YUKON XL 1500/2500 07-11
Note: For 2007 models, this fits the ‘New Body Style’ with the smooth door skin. This part also interchanges with: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 20939137, 20939138, 22860591.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean for me?
It means we load your truck’s specific Vehicle Identification Number (VIN) and all related factory calibrations onto the module before we ship it. This makes it truly plug-and-play. It ensures the BCM communicates correctly with your truck’s other computers, avoiding the conflicts and extra costs of dealership programming.
Do I need a mechanic or dealer to install this?
No. The physical installation is simple and requires basic hand tools. Because it arrives pre-programmed, you do not need a dealer’s diagnostic tool for the initial setup, saving you time and money.
My airbag light is on. Will this fix it?
This module will fix an airbag light caused by an internal BCM failure (often DTC B1001). However, after installation, you may need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ function. This is a simple relearn procedure that syncs the new BCM with the airbag system.
Is there a core charge for my old part?
Absolutely not. There is no core charge on this BCM. You can keep your old part or dispose of it without the hassle of shipping it back.
What if I run into an issue after installation?
We stand by our products. This BCM is backed by a one-year warranty. If you have any questions during or after installation, our expert support team is here to help you diagnose the issue and ensure your truck is running perfectly.