Restore Full Functionality to Your GM Truck or SUV
If you’re dealing with baffling electrical issues in your 2003-2006 Chevrolet Suburban 2500—like flickering lights, a dead instrument cluster, or power windows with a mind of their own—a failing Body Control Module (BCM) is the most common cause. As the central nervous system for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating and unpredictable problems. This replacement BCM, part number 15137395, is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a true plug-and-play repair that restores your truck’s reliability and puts you back in control.
A Technician’s Notebook: The Intermittent Gremlin
I had a 2005 Suburban 2500 in the bay last month that was driving its owner crazy. The radio would randomly shut off, the door locks would cycle while driving, and sometimes the truck wouldn’t start, showing a ‘Service Security System’ message. The owner had already replaced the battery and checked the grounds. After connecting my scanner, I saw a handful of communication loss DTCs pointing to the BCM. These modules often fail internally, causing precisely these kinds of intermittent electrical gremlins. Installing a VIN-programmed BCM like this one resolved all the issues in under 10 minutes, without a trip to the dealership. It’s the most efficient fix for these symptoms.
Is Your Suburban Showing These Electrical Glitches?
- ✔ Unresponsive or erratic power windows, door locks, or interior lights.
- ✔ The HVAC system or blower motor works intermittently or not at all.
- ✔ An airbag warning light is illuminated on the dash, often with a B1001 communication code.
- ✔ The vehicle’s security system malfunctions, leading to a no-start condition.
- ✔ A variety of communication-related Diagnostic Trouble Codes (DTCs) are stored in the system.
- ✔ Erratic wiper operation or failure to turn off.
A Straightforward Guide to Installation
Getting your Suburban back to normal is a simple, straightforward process that you can do in your own driveway. No specialized tools are required.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the system.
- Locate the BCM: On most Suburbans, Tahoes, and Silverado/Sierra trucks, the BCM is located under the driver’s side of the dashboard, just to the left of the steering column.
- Remove the Old Module: The BCM is typically held in place by plastic clips or a few small bolts. Disconnect the electrical connectors (they have release tabs) and remove the old module.
- Install the New BCM: Snap the new, pre-programmed module into place and securely reconnect all electrical connectors.
- Reconnect and Test: Reconnect the battery terminal. Start the vehicle and test all functions—lights, windows, locks, wipers, and HVAC—to confirm the repair was successful.
Important Post-Installation Note: In some cases, an airbag light may remain on. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the modules. Additionally, a brake pedal position relearn may be needed on certain models. This is a normal part of the process when replacing a central computer.
Verified Vehicle Compatibility
This BCM is a direct-fit replacement for a wide range of General Motors vehicles. It is interchangeable with part numbers 15116066, 15137395, 10383536, 15136225, 15198116, and others. Please verify your part number or contact us to ensure compatibility.
CHEVROLET AVALANCHE 1500/2500 03-06 Body Control (BCM); (under steering column)
CHEVROLET SILVERADO & GMC SIERRA 1500/2500/3500 03-07 (Classic) Body Control (BCM); Crew Cab, (under steering column)
CHEVROLET TAHOE & GMC YUKON/XL 03-06 Body Control (BCM); (under steering column)
CADILLAC ESCALADE, ESV, EXT 03-06 Body Control (BCM); (under steering column)
HUMMER H2 03-07 Body Control (BCM); (LH dash)
CHEVROLET EXPRESS & GMC SAVANA VANS 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
Why is a VIN-programmed BCM better?
Our BCM comes programmed to your vehicle’s specific VIN number. This means it’s ready for immediate installation without requiring expensive programming at a dealership. It ensures all your vehicle’s original options work correctly right out of the box.
Is this installation really DIY-friendly?
Absolutely. For most owners with basic tools, this is a 5-10 minute job. The module is easily accessible under the driver’s side dash, and the connectors are simple to release and re-attach.
My airbag light came on after I installed the new BCM. Is it defective?
No, this is a normal security measure in GM vehicles. The new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). A repair shop with a bi-directional scan tool can perform the ‘Setup SDM Primary Key’ procedure in a few minutes to clear the light.
Do I have to return my old BCM?
No. There is no core charge for this part. You can keep your old module, which saves you the time and hassle of return shipping.
Will this fix my power locks and windows acting strangely?
Yes, those are classic symptoms of a failing 2003-2006 Suburban 2500 BCM. This module directly controls those circuits, and replacing it is the most reliable way to solve those specific problems.