Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical issues in your GMC Sierra, Chevy Silverado, or Cadillac Escalade? A faulty Body Control Module (BCM) is often the culprit behind a cascade of problems, from flickering lights and unresponsive power windows to a non-functional HVAC system. This genuine GM Body Control Module, interchangeable with part number 25823559, is the definitive solution to restore your vehicle’s electronic systems to perfect working order. As the central command center for your vehicle’s body electronics, a functioning BCM is critical for safety, comfort, and convenience.
We take the guesswork and dealership hassle out of the repair process. Each module is professionally programmed to your vehicle’s specific VIN before shipping. This ensures a true plug-and-play installation, eliminating the need for expensive trips to the dealer for additional programming. Simply install the module, and you’re ready to go. This is the most efficient way to get your truck back on the road and operating as it should.
Is Your Vehicle Showing These BCM Failure Symptoms?
- ✔ Intermittent or total loss of HVAC controls and blower fan operation.
- ✔ Power windows, door locks, or interior/exterior lights not working correctly.
- ✔ The security system malfunctions, causing no-start conditions or random alarms.
- ✔ An active airbag warning light, often accompanied by DTC B1001.
- ✔ Unexplained battery drain or other bizarre electrical behavior.
- ✔ Stalling, misfires, or other performance issues linked to poor grounding managed by the BCM.
The Right Solution for Your Sierra Denali BCM
This module is engineered to meet or exceed original equipment standards, providing a dependable and lasting repair. By replacing your failing Sierra Denali BCM, you’re not just fixing a few annoying glitches; you are restoring the core stability of your vehicle’s electronic architecture. Our VIN programming service uses the latest GM software updates, ensuring optimal performance and compatibility with all related vehicle systems right out of the box.
Installation and Post-Install Notes
Installation is straightforward for those with basic mechanical skills. The BCM is typically located under the driver’s side dashboard, near the steering column. The process usually takes less than 15 minutes. While our programming handles the primary setup, some vehicles may require a ‘Setup SDM Primary Key in BCM’ procedure if the airbag light remains on after installation. This requires a professional-grade scan tool and syncs the new BCM with the airbag system. Additionally, a Brake Pedal Position Relearn may be necessary on certain models. There is no core charge, so you can keep your old part without any extra hassle.
Frequently Asked Questions
What does a Body Control Module do on a GMC Sierra?
The BCM acts as the central computer for your truck’s body electronics. It controls non-engine related functions like power windows, door locks, the security system, interior and exterior lighting, wipers, and the HVAC climate control system.
Is this BCM ready to install out of the box?
Yes! We pre-program the module to your vehicle’s specific VIN before it ships. This makes it a true plug-and-play part, requiring no additional dealership programming for standard operation.
What if my airbag light is on after installation?
If the airbag warning light is illuminated, you will need to have a technician perform the ‘Setup SDM Primary Key in BCM’ procedure using a professional scan tool. This syncs the new BCM with your vehicle’s existing airbag system.
Do I need to return my old BCM?
No. We do not require you to return your original module. There is no core charge associated with this part, making the transaction simple and hassle-free.
How do I know this part will fit my vehicle?
This module fits a wide range of 2007-2013 GM trucks and SUVs. It is a direct replacement for part number 25823559 and many others, including 25844480, 25835966, and 20939137. Please check the detailed fitment list on this page or contact us with your VIN to confirm compatibility.