Tired of Unpredictable Electronics in Your GMC Truck?
Is your 2007-2010 Sierra Denali acting possessed? One day the radio works, the next it doesn’t. The power windows have a mind of their own, the HVAC system is on strike, and you’re seeing strange warning lights on the dash. These aren’t just random annoyances; they’re classic signs of a failing Body Control Module (BCM). The BCM is the central command for your truck’s body electronics, and when it starts to go, it can cause a cascade of frustrating and hard-to-diagnose problems. This VIN-programmed replacement BCM, a direct alternative for part number 25790508, is the definitive solution to restore order and reliability to your vehicle’s essential functions.
A Technician’s Notebook: The Misleading Ground Fault
I had a 2008 Sierra 2500 in my bay last month with a laundry list of complaints: intermittent no-start, wipers activating on their own, and a flickering instrument cluster. The owner had already replaced the battery and alternator with no luck. A scan showed a dozen communication codes. My first step in these cases is always to check the main BCM ground points under the dash. Sure enough, a loose ground bolt was the culprit for some issues, but the BCM itself had suffered internal damage from the erratic voltage. After tightening the ground and installing a new programmed BCM, every single issue was resolved. It’s a powerful reminder: a solid electrical foundation is key, and this module provides the reliable core your truck needs.
Is Your Sierra Denali Showing These Electrical Gremlins?
- ✔ The security light stays on, preventing the truck from starting.
- ✔ Power door locks or windows work intermittently or not at all.
- ✔ HVAC controls are unresponsive, or the blower motor won’t turn on.
- ✔ An airbag warning light is illuminated, often with a DTC B1001 (Setup SDM Primary Key in BCM).
- ✔ Headlights, taillights, or interior lights flicker or fail to operate correctly.
- ✔ Your scanner is pulling multiple communication (U-codes) or body-related (B-codes) trouble codes.
Your 5-Minute Path to a Fully Functional Truck
Forget about expensive dealership visits and complex programming procedures. This module is delivered to your door ready for installation. The entire process typically takes less than 5 minutes.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the BCM: On most GM trucks of this era, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black box with several large multi-pin connectors.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have release tabs that need to be depressed. Remove the old module and snap the new one into place.
- Reconnect and Test: Securely plug the connectors into your new BCM. Reconnect the battery terminal and start the vehicle. Test all functions like lights, locks, windows, and climate controls to confirm the repair.
- Post-Install Note: In some cases, an airbag light may persist. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ function. A brake pedal position sensor relearn may also be needed for some models.
Verified Vehicle Compatibility List
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)
AVALANCHE 1500 07 Body Control (BCM), (under steering column)
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)
SIERRA 1500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA 1500 PICKUP 08-09 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 08-11 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 08-11 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 10-11 Body Control (BCM), (under steering column)
TAHOE 07-09 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 07-09 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)
This quality replacement part is your solution for a wide range of GM trucks and SUVs. By purchasing this pre-programmed 2007-2010 Sierra Denali BCM, you are choosing a reliable, long-term fix that restores your vehicle to factory-fresh functionality.
Frequently Asked Questions
What does a BCM do on a 2007-2010 GMC Sierra Denali?
The Body Control Module, or BCM, acts as the brain for your truck’s body electronics. It controls features you use every day, including the power windows, door locks, interior and exterior lighting, security system, wipers, and the heating and air conditioning (HVAC) system.
Is this module truly plug-and-play?
Yes. We program the module to your vehicle’s specific VIN before shipping. This ensures it communicates correctly with your truck’s other systems right out of the box, eliminating the need for a trip to the dealership for expensive programming.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your old module, which saves you the time and hassle of packaging and shipping it back.
My airbag light is on after installing. What do I do?
If the airbag light appears after installation (often with code B1001), it means the new BCM needs to be synchronized with the airbag system’s Sensing and Diagnostic Module (SDM). This is a simple ‘Setup SDM Primary Key’ procedure that can be done with most professional-grade scan tools.
What if I have other questions during installation?
We are here to help. Our team of experienced technicians can provide support to ensure your installation is a success. While specific procedures can vary, we are committed to helping you get your truck back on the road.