Regain Control of Your Truck’s Electronics
If your 2007-2011 GMC Sierra 3500 is plagued by baffling electrical issues, a failing Body Control Module (BCM) is the most likely culprit. As the central command for your truck’s comfort and convenience features, its failure can cause a cascade of problems. This OEM-quality replacement, part number 25971917, arrives expertly programmed to your vehicle’s VIN. This means no expensive trips to the dealership for coding—it’s a true plug-and-play solution designed to restore full functionality and get you back on the road with confidence.
A Technician’s Notebook
I recently had a 2009 Sierra 2500 in the bay that was driving the owner crazy. The radio would turn off randomly, the driver’s side window wouldn’t roll down, and the security light would flash, sometimes preventing it from starting. The customer had already replaced the battery and checked the main grounds. After scanning, we found a slew of communication codes pointing to the BCM. We swapped in a VIN-programmed module like this one, and every single issue vanished instantly. It’s a common failure point, but thankfully, it’s a straightforward fix.
Is Your Sierra 3500 Showing These Electrical Faults?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s time to consider a replacement:
- ✔ Your power windows, door locks, or mirrors are unresponsive or work intermittently.
- ✔ The dashboard lights flicker, or the interior dome light stays on or won’t turn on.
- ✔ The HVAC system is malfunctioning, with the blower motor not working or climate controls being erratic.
- ✔ An airbag warning light is illuminated, often with a diagnostic trouble code (DTC) like B1001.
- ✔ The anti-theft system acts up, causing no-start conditions or random alarm activation.
- ✔ Unexplained battery drain or communication errors with other modules.
A Straightforward Guide to BCM Installation
Replacing the 2007-2011 Sierra 3500 BCM is a job most DIYers can handle in under 15 minutes with basic tools. It’s one of the most accessible modules in the vehicle.
- Safety First: Always disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the Module: The BCM is typically located under the driver’s side of the dashboard, to the left of the steering column. You may need to remove a lower dash panel for access.
- Swap the Connectors: Carefully unplug the electrical connectors from the old BCM. They have release tabs that need to be pressed. Plug them securely into your new, pre-programmed module.
- Secure the New BCM: Mount the new BCM back into its bracket. It should click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start the truck and test all functions: windows, locks, lights, wipers, and HVAC to confirm the repair was successful.
- Post-Install Checks: While most functions will work immediately, if your airbag light remains on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. This re-syncs the safety systems.
Verified Fitment for Your GM Truck or SUV
This module is a direct replacement for part number 25971917 and is interchangeable with several others, ensuring broad compatibility. It is guaranteed to fit the following models:
AVALANCHE 1500 08-09 Body Control (BCM); (under steering column)
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25835966
AVALANCHE 1500 11 Body Control (BCM)
ESCALADE 07-09 Body Control (BCM); (under steering column)
ESCALADE 10 Body Control (BCM); (under steering column), ID 25835966
ESCALADE 11 Body Control (BCM); (under steering column)
ESCALADE ESV 07-09 Body Control (BCM); (under steering column)
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 25835966
ESCALADE ESV 11 Body Control (BCM); (under steering column)
ESCALADE EXT 07-09 Body Control (BCM); (under steering column)
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25835966
ESCALADE EXT 11 Body Control (BCM); (under steering column)
SIERRA 1500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA 1500 PICKUP 08 Body Control (BCM); (under steering column)
SIERRA 1500 PICKUP 09 Body Control (BCM), (under steering column)
SIERRA 1500 PICKUP 10-11 Body Control (BCM); (under steering column)
SIERRA 2500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA 2500 PICKUP 08-11 Body Control (BCM); (under steering column)
SIERRA 2500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SIERRA 3500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA 3500 PICKUP 08-11 Body Control (BCM); (under steering column)
SIERRA 3500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SIERRA DENALI 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA DENALI 08-10 Body Control (BCM); (under steering column)
SIERRA DENALI 1500 11 Body Control (BCM); (under steering column)
SIERRA DENALI 2500 11 Body Control (BCM); (under steering column)
SIERRA DENALI 2500 13 Body Control (BCM); (under steering column), ID 25835966
SIERRA DENALI 3500 11 Body Control (BCM); (under steering column)
SIERRA DENALI 3500 13 Body Control (BCM); (under steering column), ID 25835966
SILVERADO 1500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SILVERADO 1500 PICKUP 08-11 Body Control (BCM); (under steering column)
SILVERADO 2500 PICKUP 07 Body Control (BCM); new style (smooth door skin), under steering column)
SILVERADO 2500 PICKUP 08 Body Control (BCM), (under steering column)
SILVERADO 2500 PICKUP 09-11 Body Control (BCM); (under steering column)
SILVERADO 2500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SILVERADO 3500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SILVERADO 3500 PICKUP 08 Body Control (BCM), (under steering column)
SILVERADO 3500 PICKUP 09-11 Body Control (BCM); (under steering column)
SILVERADO 3500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SUBURBAN 1500 07-09 Body Control (BCM); (under steering column)
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 25835966
SUBURBAN 1500 11 Body Control (BCM); (under steering column)
SUBURBAN 2500 07-09 Body Control (BCM); (under steering column)
SUBURBAN 2500 10 Body Control (BCM), (under steering column)
SUBURBAN 2500 11 Body Control (BCM); (under steering column)
TAHOE 07 Body Control (BCM); (under steering column)
TAHOE 08 Body Control (BCM)
TAHOE 09 Body Control (BCM); (under steering column)
TAHOE 10 Body Control (BCM); (under steering column), ID 25835966
TAHOE 11 Body Control (BCM); (under steering column)
YUKON 07 Body Control (BCM); (under steering column)
YUKON 08 Body Control (BCM), (under steering column)
YUKON 09 Body Control (BCM); (under steering column)
YUKON 10 Body Control (BCM); (under steering column), ID 25835966
YUKON 11 Body Control (BCM), (under steering column)
YUKON XL 1500 07-09 Body Control (BCM), (under steering column)
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 25835966
YUKON XL 1500 11 Body Control (BCM); (under steering column)
YUKON XL 2500 07-08 Body Control (BCM), (under steering column)
YUKON XL 2500 09-11 Body Control (BCM); (under steering column)
Frequently Asked Questions
What does ‘VIN Programmed’ mean for me?
It means this BCM will arrive ready for installation with no additional programming needed. We flash it with your truck’s specific VIN and the latest GM software, ensuring it works correctly right out of the box and saving you a costly trip to the dealer.
Is this a difficult part to replace myself?
Not at all. For most owners with basic hand tools, this is a very simple repair. The BCM is located under the dash and is held in by clips or simple bolts, making for a quick swap in about 15 minutes.
Why is my airbag light on after installing the new BCM?
This is a normal security measure. The new BCM needs to be electronically ‘introduced’ to the airbag’s Supplemental Deployment Module (SDM). A professional scan tool is required to perform the ‘Setup SDM Primary Key’ function to sync the modules and turn off the light.
Do I need to return my old BCM?
No, there is absolutely no core charge for this part. You can keep your old module without any penalty or hassle.
Will this fix my truck’s no-start problem?
It can. The BCM is a key part of the vehicle’s anti-theft system (Passlock/Passkey). If it fails, it can prevent the engine from starting. Replacing a faulty BCM is a common solution for this specific symptom.