Solve Your Truck’s Electrical Gremlins for Good
Is your Chevrolet or GMC truck acting possessed? One day the power windows work, the next they don’t. The A/C blower motor has a mind of its own, and a persistent airbag light is staring you down. As a technician with over two decades of experience, I’ve seen these frustrating electrical mysteries hundreds of times. The culprit is almost always a failing Body Control Module (BCM). This isn’t just an inconvenience; it affects your vehicle’s safety and core functions. This VIN-programmed BCM, part number 25823559, is the definitive solution, designed to restore full functionality to your vehicle without a costly trip to the dealership.
The BCM is the central command center for your truck’s body electronics. When it fails, it creates a cascade of confusing problems. Our replacement module arrives pre-programmed to your vehicle’s specific VIN, ensuring it communicates perfectly with all other systems right out of the box. This is the simple, reliable fix for your 2007-2011 Suburban 2500 BCM and many other GM models.
Case Study: The Suburban That Wouldn’t Cooperate
A customer brought in their ’09 Suburban 2500 with a perplexing set of issues: the security light would flash intermittently causing a no-start condition, the radio would cut out, and the airbag light was on with a DTC B1001. They had already replaced the battery and checked fuses. After confirming power and grounds to the BCM, we noticed slight corrosion on the main ground point under the dash. We installed one of our programmed BCMs and cleaned the ground connection thoroughly. The new module immediately resolved the no-start and radio issues. We then performed the ‘Setup SDM Primary Key’ procedure with our scanner, which cleared the B1001 code for good. It’s a classic example of how a failing BCM, sometimes combined with a poor ground, can create chaos. This fix saved the customer hundreds compared to a dealership repair.
Is Your GM Truck Showing These Symptoms?
- âś” Power windows, door locks, or interior/exterior lights operating erratically or not at all.
- âś” HVAC controls are unresponsive, or the blower motor works intermittently.
- âś” The security system acts up, causing no-start or stalling conditions.
- âś” An airbag warning light is illuminated, often with Diagnostic Trouble Code (DTC) B1001.
- âś” Communication errors with other modules, leading to various warning lights on the dash.
- âś” Wipers won’t turn on, or won’t park in the correct position.
A Straightforward Guide to BCM Installation
Replacing the BCM is a quick job for any DIY enthusiast or professional. You can have your truck back to normal in minutes.
- Safety First: Always disconnect the negative battery terminal before working on any vehicle electronics.
- Locate the BCM: On most of these GM trucks and SUVs, the BCM is located under the driver’s side of the dashboard, near the steering column.
- Remove Connectors: Carefully unplug the electrical connectors from the old module. They have release tabs that need to be pressed.
- Swap the Module: Unclip or unbolt the old BCM and install the new one in its place.
- Reconnect Everything: Plug the connectors firmly into the new module and reconnect the negative battery terminal.
- Post-Install Checks: Start the vehicle and test all functions (lights, locks, windows, HVAC). If the airbag light remains on, a ‘Setup SDM Primary Key’ relearn procedure is required using a compatible scan tool. Some models may also require a Brake Pedal Position relearn.
Guaranteed Fitment for Your GM Truck or SUV
This module is a direct replacement for part number 25823559 and is interchangeable with a wide range of other part numbers, including 25844480, 25835966, 15943678, 20939137, and 22860591. It provides a reliable solution for a faulty 2007-2011 Suburban 2500 BCM and many other vehicles. Please verify your part number or contact us to confirm compatibility.
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
Does this BCM need to be programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. This ensures it’s ready for installation right out of the box, saving you time and money on dealership programming fees.
Is there a core charge for my old BCM?
No, there is no core charge. You can keep your old part, so there’s no need to worry about return shipping or waiting for a refund.
Why is my airbag light still on after installing the new BCM?
This is a common security feature. The BCM needs to be synced with the airbag system’s Sensing and Diagnostic Module (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure. It’s a quick process for any qualified shop.
How difficult is the installation?
The physical installation is very easy and typically takes less than 15 minutes. It involves unplugging the old module and plugging in the new one. No special tools are needed for the swap itself.
Will this fix my intermittent no-start problem?
A faulty BCM is a very common cause of security-related no-start issues in these GM trucks. If your security light is flashing and the vehicle won’t crank, replacing the 2007-2011 Suburban 2500 BCM is a highly effective repair.