2007-2011 Sierra 2500 BCM 25790508 | VIN Programmed Body Control Module

Finally, A Reliable Fix for Your Truck’s Electrical Headaches

If you’re dealing with a 2007-2011 GMC Sierra 2500 that seems to have a mind of its own—with flickering lights, a dead climate control panel, or power windows that refuse to work—you’ve likely met the common failure point: the Body Control Module (BCM). As the central command for your truck’s body electronics, a failing BCM can cause a cascade of frustrating and seemingly unrelated issues. This VIN-programmed Body Control Module, a direct replacement for part number 25790508, is the definitive solution to restore full functionality and peace of mind without a costly trip to the dealership.

We pre-program each module to your truck’s specific Vehicle Identification Number (VIN) before it ships. This crucial step ensures that the BCM communicates flawlessly with your vehicle’s other systems right out of the box. You get a true plug-and-play component that bypasses the need for expensive dealer tools or software subscriptions, getting your workhorse back on the road where it belongs.

Is Your Sierra Exhibiting These Telltale BCM Failure Signs?

A faulty BCM can manifest in numerous ways. If your truck is experiencing any of the following, a replacement is likely the solution. This is especially true if you have a 2007-2011 Sierra 2500 BCM that has never been replaced.

• ✔ The HVAC blower motor works intermittently or not at all.
• ✔ Your power windows, door locks, or mirrors have stopped responding.
• ✔ The security system acts erratically, preventing the truck from starting.
• ✔ An airbag warning light is illuminated on the dash, often with a DTC like B1001.
• ✔ Interior or exterior lights (headlights, dome lights) flicker or fail to turn on.
• ✔ You’re seeing multiple communication (U-codes) or body-related diagnostic trouble codes.

A Straightforward Guide to BCM Installation

Replacing the BCM is a job most DIYers can tackle in their own driveway in about 15 minutes. No specialized tools are required for the physical swap.

1. Safety First: Always disconnect the negative terminal from your truck’s battery to prevent electrical shorts.
2. Locate the Module: The BCM is located under the driver’s side dashboard, typically to the left of the steering column. You may need to remove a lower dash panel for access.
3. Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once unplugged, unclip or unbolt the module from its bracket.
4. Install the New BCM: Seat the new, pre-programmed module into the mounting bracket and securely plug in all electrical connectors. You should hear a ‘click’ as they lock into place.
5. Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: lights, windows, locks, wipers, and HVAC to confirm the repair.

Important Note: In some cases, particularly if the airbag light was on, a post-installation procedure to sync the new BCM with the airbag system (SDM) may be needed using a professional scan tool. See our FAQ section for more details.

Guaranteed Fitment for Your GM Truck or SUV

This module is a direct replacement for part number 25790508 and is also interchangeable with a wide range of other GM part numbers, including 25844480, 25835966, and 20939137. It is engineered to fit the following vehicles: