Restore Full Electrical Control to Your GM Truck
Is your 2011 Sierra Denali 1500 or other GM truck plagued by frustrating electrical issues? Flickering lights, an unresponsive HVAC system, or power windows with a mind of their own are classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it falters, it can cause a cascade of seemingly unrelated problems. This OEM-quality replacement, equivalent to part number 25844480, is the definitive solution. We pre-program it to your vehicle’s specific VIN, ensuring it works perfectly right out of the box, with no expensive dealership trips required for programming.
A Technician’s Notebook: The Ground-Out That Wasn’t
I once had a 2011 Sierra Denali 1500 in my bay that was a diagnostic nightmare. The customer reported the radio would cut out, the dome light would flicker, and the anti-theft system would randomly engage, preventing the truck from starting. The initial thought was a bad ground—a common issue on these trucks. We spent hours chasing wires. Finally, we hooked up a high-end scanner and saw a flood of communication error codes originating from the BCM. It wasn’t a bad ground; the BCM itself was failing internally, creating the illusion of a grounding problem. Swapping in a VIN-programmed BCM like this one solved every single issue in under 10 minutes. It’s a reminder that sometimes the most complex problems have the simplest solutions.
Is Your Truck Showing These Electrical Gremlins?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement. Over my 20 years in diagnostics, these are the most common symptoms I’ve seen tied directly to a faulty 2011 Sierra Denali BCM.
- ✔ The A/C or heater blower motor works intermittently or not at all.
- ✔ Your airbag warning light is on, often with a DTC like B1001 (Setup SDM Primary Key in BCM).
- ✔ Power windows, door locks, or exterior lights operate erratically or have failed completely.
- ✔ The security system malfunctions, causing no-start conditions, stalling, or misfires.
- ✔ A variety of diagnostic trouble codes (DTCs) related to body systems are present.
- ✔ You experience strange electrical behavior that seems to have no logical cause.
A Straightforward 5-Minute Installation Guide
One of the best features of this module is its ease of installation. You don’t need to be a master mechanic to get your truck back in top shape. Just follow these simple steps.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electrical components.
- Locate the BCM: On most GM trucks and SUVs from this era, the BCM is located in the driver’s footwell, under the dashboard to the left of the steering column.
- Disconnect and Remove: The module is held in by simple clips or tabs. Carefully unplug the electrical connectors (they have locking tabs you’ll need to press) and remove the old BCM.
- Install the New Module: Snap the new, pre-programmed BCM into place and securely reconnect all electrical connectors. You’ll hear a click when they are fully seated.
- Reconnect and Test: Reconnect the negative battery terminal. Start your vehicle and test all functions—lights, windows, HVAC, etc.—to confirm the repair was successful.
- Post-Install Checks: In some cases, an airbag light may persist. This requires an ‘SDM Key Sync’ with a compatible scan tool. Similarly, a ‘Brake Pedal Position Relearn’ might be needed. See our FAQ for more details.
Verified Fitment for Your GM Truck or SUV
This Body Control Module is a direct replacement for part number 15284816 and many others. It is guaranteed to fit the following vehicles. Please match your vehicle and any specific options noted.
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)