Restore Full Electrical Function to Your GM Truck
If you’re dealing with baffling electrical issues in your 2013 Sierra Denali 2500—like an air conditioner that won’t turn on, power windows with a mind of their own, or persistent warning lights on the dash—a failing Body Control Module (BCM) is the likely culprit. As the central hub for your truck’s body electronics, a faulty BCM can cause a cascade of frustrating problems. This OEM-quality Body Control Module, equivalent to part number 25823558, is the definitive solution. It arrives expertly programmed to your vehicle’s specific VIN, eliminating the need for expensive dealership visits and ensuring a seamless, out-of-the-box installation.
A Technician’s Notebook: The Ghost in the Machine
I once had a 2011 Silverado 2500 in my bay with a classic case of what the owner called ‘gremlins.’ The radio would shut off randomly, the dome light would flicker when hitting a bump, and the HVAC blower was completely dead. The owner had already replaced the battery and the HVAC control head with no luck. After hooking up my scanner, I saw a handful of U-codes (loss of communication) pointing toward the BCM. These GMT900-platform trucks are notorious for BCM failures that cause poor grounding signals internally. We installed a VIN-programmed BCM, and every single issue was resolved instantly. It’s a reminder that chasing individual symptoms can be a waste of time when the central controller is the root cause.
Is Your GM Truck Showing These Telltale Signs?
A failing BCM doesn’t always trigger a check engine light, but it leaves a trail of clues. If you’re experiencing any of the following, it’s time to inspect your BCM:
- ✔ Intermittent or non-functional HVAC controls and blower motor.
- ✔ Erratic power door locks, windows, or exterior lighting.
- ✔ An airbag warning light that won’t go away, often with DTC B1001 (Setup SDM Primary Key).
- ✔ Security system malfunctions, causing no-start or stalling conditions.
- ✔ A host of communication codes (U-codes) or other body-related DTCs.
- ✔ Unexplained battery drain when the vehicle is off.
A Straightforward Guide to BCM Replacement
For the average DIYer, this is one of the easier module swaps you can perform. With our VIN programming, you can have your truck back to normal in under 15 minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on electrical components.
- Locate the BCM: On most 2007-2013 GM trucks and SUVs, the BCM is located under the driver’s side of the dashboard, to the left of the steering column.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Remove the old module (it’s typically held in by clips or a few small bolts) and install the new one in its place.
- Reconnect and Test: Securely plug the connectors into your new BCM. Reconnect the negative battery terminal. Start the vehicle and test all body functions—lights, wipers, locks, windows, and HVAC—to confirm the repair.
- Final Checks: In some cases, an airbag light may remain on. This requires an ‘SDM Key Sync’ with a compatible high-end scan tool. Similarly, a brake pedal position relearn may be needed. See our FAQ for more details.
Will This Fit My Truck?
This module is a direct replacement for part number 25823558 and other interchangeable numbers, ensuring broad compatibility across the GM truck and SUV lineup. Please verify your vehicle is on the list below.
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25835966
SIERRA 2500 PICKUP 08-11 Body Control (BCM); (under steering column)
SIERRA DENALI 2500 11 Body Control (BCM); (under steering column)
SIERRA DENALI 3500 13 Body Control (BCM); (under steering column), ID 25835966
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 25835966
SUBURBAN 2500 10 Body Control (BCM), (under steering column)
YUKON XL 2500 09-11 Body Control (BCM); (under steering column)
ESCALADE EXT 07-09 Body Control (BCM); (under steering column)
SIERRA 3500 PICKUP 08-11 Body Control (BCM); (under steering column)
TAHOE 07 Body Control (BCM); (under steering column)
YUKON 07 Body Control (BCM); (under steering column)
ESCALADE EXT 11 Body Control (BCM); (under steering column)
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 25835966
AVALANCHE 1500 08-09 Body Control (BCM); (under steering column)
SILVERADO 1500 PICKUP 08-11 Body Control (BCM); (under steering column)
TAHOE 09 Body Control (BCM); (under steering column)
SIERRA 1500 PICKUP 10-11 Body Control (BCM); (under steering column)
SIERRA 2500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SILVERADO 2500 PICKUP 09-11 Body Control (BCM); (under steering column)
SUBURBAN 2500 07-09 Body Control (BCM); (under steering column)
YUKON 11 Body Control (BCM), (under steering column)
ESCALADE 11 Body Control (BCM); (under steering column)
ESCALADE ESV 11 Body Control (BCM); (under steering column)
SUBURBAN 1500 07-09 Body Control (BCM); (under steering column)
AVALANCHE 1500 07 Body Control (BCM), (under steering column)
SIERRA 3500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SILVERADO 3500 PICKUP 08 Body Control (BCM), (under steering column)
TAHOE 10 Body Control (BCM); (under steering column), ID 25835966
YUKON 08 Body Control (BCM), (under steering column)
YUKON 09 Body Control (BCM); (under steering column)
SIERRA 3500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SIERRA DENALI 2500 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 3500 PICKUP 09-11 Body Control (BCM); (under steering column)
SILVERADO 3500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
TAHOE 08 Body Control (BCM)
YUKON XL 2500 07-08 Body Control (BCM), (under steering column)
SIERRA DENALI 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA DENALI 1500 11 Body Control (BCM); (under steering column)
SILVERADO 2500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
YUKON 10 Body Control (BCM); (under steering column), ID 25835966
YUKON XL 1500 07-09 Body Control (BCM), (under steering column)
YUKON XL 1500 11 Body Control (BCM); (under steering column)
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25835966
SIERRA 2500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
ESCALADE 07-09 Body Control (BCM); (under steering column)
SIERRA 1500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA 1500 PICKUP 09 Body Control (BCM), (under steering column)
SIERRA DENALI 3500 11 Body Control (BCM); (under steering column)
SUBURBAN 2500 11 Body Control (BCM); (under steering column)
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 25835966
SIERRA 1500 PICKUP 08 Body Control (BCM); (under steering column)
SIERRA DENALI 08-10 Body Control (BCM); (under steering column)
SUBURBAN 1500 11 Body Control (BCM); (under steering column)
ESCALADE 10 Body Control (BCM); (under steering column), ID 25835966
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 3500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
AVALANCHE 1500 11 Body Control (BCM)
TAHOE 11 Body Control (BCM); (under steering column)
Frequently Asked Questions
Frequently Asked Questions
What exactly does VIN programming do for me?VIN programming means we load your vehicle’s unique identification number and factory-specified software onto the module before we ship it. This ensures it communicates correctly with your truck’s other systems, like the engine computer and anti-theft system, making installation a true plug-and-play process without needing a trip to the dealer for coding.