Are you chasing down bizarre electrical issues in your GM truck or SUV? One minute the power windows work, the next they don’t. The radio cuts out, the security light is flashing, or the HVAC blower motor has a mind of its own. After 20 years in the business, I can tell you that these frustrating, intermittent problems often point to one component: a failing Body Control Module (BCM). This module is the central command center for your vehicle’s body electronics, and when it starts to fail, it can cause a cascade of confusing symptoms.
This replacement Body Control Module, compatible with part number 15137394, is the definitive solution. We take the hassle and high cost out of the repair by pre-programming the module to your vehicle’s specific VIN. This means no expensive trip to the dealership for programming. It arrives at your door ready for a simple, plug-and-play installation, restoring full functionality and reliability to your vehicle’s essential systems.
From the Diagnostic Bay
Case Study: The 2005 Silverado That Wouldn’t Start
A customer brought in a 2005 Silverado 1500 with a classic BCM failure story. The truck would randomly refuse to start, the security light would flash on the dash, and the driver’s power window was dead. They had already replaced the battery and checked the alternator. After hooking up my scanner, I saw a handful of communication loss codes (U-codes) pointing to the BCM. A quick check of the BCM’s ground connection under the dash showed it was secure, confirming an internal module failure. We installed a VIN-programmed BCM, and within 10 minutes, all the electrical gremlins were gone. The truck started every time, and all accessories worked perfectly. This is a text-book repair for these symptoms.
Is Your GM Truck or SUV Showing These Symptoms?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, a replacement is likely the solution:
- ✔ Intermittent or non-functional power windows, door locks, or interior lights.
- ✔ HVAC system problems, such as the blower motor not working or being stuck on one speed.
- ✔ The security or anti-theft system acting up, causing a no-start condition.
- ✔ An airbag warning light on the dash, sometimes accompanied by DTC B1001 (Option Configuration Error).
- ✔ Unpredictable behavior from windshield wipers or radio controls.
- ✔ A cluster of communication-related Diagnostic Trouble Codes (DTCs).
A Straightforward Guide to Installation
For most DIYers and professional mechanics, this is a quick and simple job. You’ll have your truck back to normal in minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work. This prevents shorts and helps reset the system.
- Locate the BCM: On most compatible trucks and SUVs (like the Silverado, Sierra, Suburban, and Tahoe), the BCM is located under the driver’s side dashboard, near the steering column. On Express and Savana vans, it’s typically behind the center dash panel.
- Swap the Module: Carefully unplug the electrical connectors from the old BCM. They have locking tabs, so be gentle. Remove any mounting screws or clips holding the old module in place, then install the new module and reconnect the connectors securely.
- Reconnect and Test: Reconnect the battery terminal. Start the vehicle and test all functions: lights, locks, windows, wipers, and HVAC to ensure everything is working correctly.
- Post-Install Checks: 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. This is a simple sync process that a well-equipped independent shop can perform.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of General Motors vehicles. It is interchangeable with part numbers 10383536, 15116066, 15136225, 15136877, 15137393, 15137395, 15198116, and more. Please verify your part number or contact us for fitment confirmation. This is a reliable solution for your 2003-2006 Suburban 2500 BCM and many other models.
Fits models including: Chevrolet Avalanche, Silverado, Suburban, Tahoe, Express Van; GMC Sierra, Yukon, Savana Van; Cadillac Escalade (all variants); and Hummer H2 from approximately 2002-2007. Specific options and cab styles may apply.
Frequently Asked Questions
Q:
Do I need to take my truck to the dealer after installing this BCM?
A: No. This module comes pre-programmed to your vehicle’s VIN. This eliminates the need for dealership programming, saving you time and money. It’s designed for a plug-and-play installation.
Q:
What does “No Core Charge” mean?
A: It means you don’t have to send your old, faulty module back to us. You can keep it or dispose of it yourself, simplifying the process for you.
Q:
My airbag light is on after installation. What should I do?
A: This is not uncommon. The new BCM needs to be electronically ‘introduced’ to the airbag system’s Sensing and Diagnostic Module (SDM). A mechanic with a bi-directional scan tool can perform the “Setup SDM Primary Key” procedure in a few minutes to clear the light.
Q:
Is this a difficult part for a DIYer to replace?
A: Not at all. The BCM is usually held in by a few clips or screws and is easily accessible under the dashboard. With basic hand tools, most people can swap it out in under 15 minutes.
Q:
Will this fix my specific problem, like the blower motor not working?
A: The BCM controls a wide range of body electronics, including the HVAC blower motor relay. While it is a very common cause for these issues, always ensure your vehicle has been properly diagnosed. A faulty BCM is the most likely culprit for multiple, unrelated electrical failures occurring at once.