End Frustrating Electrical Problems in Your GM Truck
Are you chasing down bizarre electrical issues in your 2007-2010 GMC Sierra Denali? Flickering lights, a dead HVAC system, or power windows with a mind of their own are classic signs of a failing Body Control Module (BCM). As the central computer for your truck’s comfort and security features, a faulty BCM can make your daily drive a nightmare. This replacement module, part number 15901388, is the definitive solution to restore full functionality and peace of mind.
What is Our Cloning Service?
Forget about expensive dealership visits and programming headaches. Our unique cloning service makes this a true plug-and-play repair. Here’s how it works: you send us your original BCM, and we professionally transfer its critical data—including your vehicle’s VIN, key information, and specific options—directly onto this replacement unit. We then ship both your original module and the ready-to-install replacement back to you. This process ensures 100% seamless compatibility with your truck’s existing systems, getting you back on the road without any extra steps.
Is Your Sierra Denali Showing These Electrical Gremlins?
- ✔ Intermittent or completely dead HVAC and blower motor controls.
- ✔ An airbag warning light that won’t turn off, often with DTC B1001.
- ✔ Power windows, door locks, or interior/exterior lights that work sporadically or not at all.
- ✔ Security system faults, causing no-start conditions, stalling, or misfires.
- ✔ A cluster of seemingly unrelated diagnostic trouble codes (DTCs) pointing to body system failures.
- ✔ Strange grounding issues or parasitic battery drain that leaves you with a dead battery.
A Technician’s Notebook: The Phantom Battery Drain
I once had a 2009 Sierra 1500 in my bay that was on its third new battery in a year. The owner was convinced he had a bad alternator or a short somewhere. After hours of diagnostics, we traced a significant parasitic draw back to the BCM. Even with the key off, the module wasn’t properly going to sleep, slowly draining the battery overnight. A cloned BCM replacement didn’t just fix the weird electrical glitches he’d learned to live with; it solved the root cause of his battery woes. It’s a perfect example of how a failing 2007-2010 Sierra Denali BCM can cause problems that seem completely unrelated.
Your 5-Minute BCM Swap Guide
- ✔ Step 1: Safety First. Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Step 2: Locate the BCM. On most GM trucks of this era, you’ll find the BCM located under the driver’s side dashboard, near the steering column.
- ✔ Step 3: Disconnect and Remove. Carefully unplug the electrical connectors from the old module. They have locking tabs, so be gentle. Once disconnected, remove the old BCM.
- ✔ Step 4: Install the New Module. Seat the new, cloned BCM into the mounting bracket and securely plug in all the connectors. You should hear a click as they lock into place.
- ✔ Step 5: Reconnect and Test. Reconnect the negative battery terminal. Start your truck and test all functions—lights, windows, locks, and HVAC—to confirm the repair was successful.
Important Post-Installation Information
While our cloning service handles the primary programming, some vehicle systems may require a quick sync. If your airbag light remains on after installation, a technician will need to perform the “Setup SDM Primary Key in BCM” procedure using a compatible scan tool. Additionally, some models may require a Brake Pedal Position sensor relearn. These are simple procedures for any professional shop. Always refer to a factory service manual for vehicle-specific instructions.
Verified Fitment for Your GM Truck or SUV
This module is a direct replacement for part number 15901388 and is interchangeable with a wide range of other part numbers, including: 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 20939137, 20939138, and 22860591. It fits a vast array of General Motors vehicles, including:
- Cadillac Escalade, ESV, EXT (2007-2011)
- Chevrolet Avalanche 1500 (2007-2011)
- Chevrolet Silverado 1500, 2500, 3500 (2007-2013)
- Chevrolet Suburban 1500, 2500 (2007-2011)
- Chevrolet Tahoe (2007-2011)
- GMC Sierra 1500, 2500, 3500 & Denali (2007-2013)
- GMC Yukon & Yukon XL (2007-2011)
Fix your truck the right way with a reliable, pre-configured 2007-2010 Sierra Denali BCM. Order yours today and take back control of your vehicle’s electronics.
Frequently Asked Questions
What exactly is a ‘Cloning Service’?
Cloning is a process where we transfer the complete software and vehicle-specific data (like VIN and security information) from your original BCM to the replacement unit. This makes the new part an exact digital copy of the old one, ensuring it works perfectly with your truck without needing a trip to the dealer for programming.
Do I need any special tools for installation?
No, basic hand tools are all you need to physically swap the module. It’s typically held in place by simple clips or small bolts. The entire process often takes less than 15 minutes. However, if an airbag sync is needed post-installation, a professional-grade scan tool is required.
What happens if my airbag light is on after I install the new BCM?
This is not uncommon. It simply means the new BCM needs to be electronically ‘introduced’ to your truck’s airbag system (SDM). A repair shop can perform the “Setup SDM Primary Key in BCM” procedure with a scan tool to sync the modules and turn off the light.
Is there a core charge or do I need to return my old part?
You need to send us your original module for the cloning service. However, there is no core charge, and we always return your original BCM to you along with the newly programmed replacement unit.