Restore Full Electrical Function to Your GM Truck
If you’re battling a storm of electrical problems in your 2003-2007 GMC Sierra 1500, the Body Control Module (BCM) is the likely culprit. As the central command center for your truck’s body electronics, a failing BCM can cause chaos—from non-responsive power windows and door locks to a dead HVAC system or even a no-start condition. This replacement BCM, equivalent to GM part number 15137395, is the definitive solution. We pre-program it to your vehicle’s specific VIN, ensuring it works perfectly right out of the box, with no expensive dealership programming required. Get your truck back to 100% without the hassle.
A Technician’s Notebook
I remember a 2005 Sierra 2500 that came into the shop with a laundry list of complaints. The owner said the radio would cut out, the driver’s side window wouldn’t go down, and the ‘Service Airbag’ message was on. He’d already replaced the battery and checked fuses. After confirming good power and ground at the BCM connectors, we knew where the problem was. These modules often fail internally from heat cycles and vibrations over the years, causing these bizarre, unrelated symptoms. Swapping in a VIN-programmed BCM fixed every single issue in under 10 minutes. It’s a common failure, and this part is the most reliable fix.
Is Your Sierra Exhibiting These Electrical Gremlins?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement. This is especially true if you have multiple symptoms at once.
- ✔ Power windows, door locks, or interior lights operating intermittently or not at all.
- ✔ HVAC controls are unresponsive, or the blower motor won’t turn on.
- ✔ The security system malfunctions, causing alarm issues or preventing the engine from starting.
- ✔ The airbag warning light is illuminated, often with a related Diagnostic Trouble Code (DTC) like B1001 (Option Configuration Error).
- ✔ Erratic behavior from windshield wipers or exterior lighting.
- ✔ Communication issues across the vehicle’s data network, leading to multiple error codes.
DIY-Friendly Installation: Get Your Truck Fixed in Minutes
One of the best features of our pre-programmed BCM is the simple, straightforward installation. You don’t need to be a master mechanic to get this job done. Just follow these steps:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the BCM: On most Sierra and Silverado models, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black plastic box with several large multi-pin connectors.
- Swap the Modules: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once unplugged, remove the old module from its mounting bracket and install the new one in its place.
- Reconnect and Test: Securely plug all connectors into your new BCM. Reconnect the battery terminal. Start the vehicle and test all functions—lights, locks, windows, HVAC, and wipers—to confirm the repair was successful.
Verified Fitment For Your GM Truck or SUV
This Body Control Module is a direct replacement for part numbers 15137395, 15116066, 15136225, 15198116, 10383536, and many others. It is guaranteed to fit the following vehicles (Crew Cab models specifically, and others as listed):
CADILLAC ESCALADE, ESV, EXT 03-06 (under steering column)
HUMMER H2 04-07 (LH dash)
CHEVROLET/GMC EXPRESS/SAVANA VANS 04-07 (center dash, w/ opt PRP)
SILVERADO/SIERRA 1500 PICKUP 03-06 (Crew Cab, under steering column)
SILVERADO/SIERRA 1500 PICKUP 07 Classic (Crew Cab, under steering column)
SILVERADO/SIERRA 2500/3500 PICKUP 03-06 (Crew Cab, under steering column)
SILVERADO/SIERRA 2500/3500 PICKUP 07 Classic (Crew Cab, under steering column)
SUBURBAN/YUKON XL 1500/2500 03-06 (under steering column)
TAHOE/YUKON 03-06 (under steering column)
Frequently Asked Questions
Frequently Asked Questions
Why is VIN programming so important for a BCM?
VIN programming loads your truck’s specific configuration—like power seats, keyless entry, or specific lighting—onto the module. Without it, these features won’t work. Our service ensures it’s a true plug-and-play part, saving you a trip to the dealer.
Do I need to send my old BCM back?
No. There is no core charge for this part. You can keep your old module, which saves you the time and expense of return shipping.
My airbag light is still on after installation. What do I do?
This is a normal possibility. If the airbag light remains on, it means the new BCM needs to be synced with the airbag’s Sensing and Diagnostic Module (SDM). A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light.
What tools do I need for this job?
Installation typically requires only basic hand tools, such as a socket set or a nut driver to remove the dashboard panel and a small screwdriver or trim tool to help release the connector tabs. No special electronic tools are needed for the physical swap.
Is this part number 15137395 the same as 15116066?
Yes. GM often uses multiple part numbers for the same component over its production life. This module is a direct interchange for part numbers 15137395, 15116066, and many others listed in the fitment section, guaranteeing proper function.
Will this fix a BCM-related no-start condition?
Absolutely. The BCM is a critical part of the vehicle’s anti-theft and starting system. If your original BCM has failed in a way that affects the security handshake with the key, replacing it with our VIN-programmed module will resolve the issue.