Restore Full Functionality to Your GM Truck or SUV

Are you dealing with baffling electrical issues in your 2007-2011 GMC Yukon XL 1500? One moment the A/C works, the next it doesn’t. Power windows have a mind of their own, and you’re seeing persistent warning lights on the dash. As a technician with over two decades of experience, I’ve seen these exact frustrations hundreds of times. The culprit is almost always a failing Body Control Module (BCM), the central computer for your vehicle’s comfort and convenience features. This replacement BCM, part number 25790509, is the definitive solution to restore your vehicle’s electronics to factory-perfect operation.

We take the guesswork and high dealership costs out of the equation. Each module is expertly programmed to your vehicle’s specific VIN before it ships. This means no expensive trips to the dealer for programming—it arrives ready for a true plug-and-play installation. This isn’t just a replacement part; it’s a permanent fix for the erratic behavior that has been plaguing your truck or SUV, from the security system to the interior lights.

Is Your Yukon Exhibiting These Telltale Signs?

A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s highly likely your BCM is the root cause:

• ✔ Erratic or non-functional HVAC controls and blower motor operation.
• ✔ Annoying airbag warning light, often accompanied by Diagnostic Trouble Code (DTC) B1001.
• ✔ Power windows, door locks, or exterior lights that work intermittently or not at all.
• ✔ Security system faults, causing no-start conditions, stalling, or misfires.
• ✔ A dashboard lit up with various warning lights and communication DTCs (U-codes).
• ✔ Strange electrical behavior, like the radio turning on by itself or interior lights staying on.

Your 5-Minute BCM Installation Guide

Getting your truck back to normal is easier than you think. This is a job most DIYers can complete in their driveway in just a few minutes.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronics.
2. Locate the BCM: On most GM trucks and SUVs of this era, the BCM is located under the driver’s side of the dashboard, to the left of the steering column. It’s a black box with several large multi-pin connectors.
3. Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be pressed. Once unplugged, unclip the old module from its mounting bracket and clip the new one in its place.
4. Reconnect Everything: Firmly plug the connectors into your new, pre-programmed BCM. Reconnect the negative battery terminal.
5. Post-Installation Checks: Start the vehicle and verify that all functions (lights, windows, HVAC, etc.) are working correctly. Note: If the airbag light remains on, a simple ‘Setup SDM Primary Key’ relearn procedure may be needed with a compatible scan tool, as detailed in our FAQs.

Verified Fitment for Your GM Truck or SUV

This module is a direct replacement for part number 25790509 and is interchangeable with a wide range of other part numbers, ensuring broad compatibility. Please verify your vehicle is on this list for guaranteed fitment.