Tired of Electrical Gremlins in Your GM Truck?
If you’re dealing with a frustrating mix of electrical issues in your 2007-2013 GM truck or SUV—like flickering lights, a dead HVAC system, or random warning messages—you’re not alone. The Body Control Module (BCM) is the central command for your vehicle’s body electronics, and when it fails, it can cause widespread, confusing problems. This replacement GM Body Control Module, part number 15263363, is the definitive solution. We pre-program it to your vehicle’s specific VIN, so it arrives ready for a simple, plug-and-play installation, getting you back on the road without a costly trip to the dealership.
A Technician’s Notebook: The 2009 Silverado Case
A customer brought in his ’09 Silverado 1500 last month with a classic case of BCM failure. The radio would turn on and off by itself, the driver’s side power window was dead, and the A/C blower was intermittent. He’d already replaced the battery and checked fuses, but the problems persisted. After a quick scan, we saw a handful of communication codes pointing to the BCM. Instead of a lengthy diagnostic and programming session at the dealer, we ordered this VIN-programmed unit. The swap took less than ten minutes, and upon reconnecting the battery, all the phantom electrical issues were gone. It’s a prime example of how the right part saves hours of frustration and diagnostic fees.
Is Your GM Truck or SUV Showing These Symptoms?
- ✔ The HVAC blower motor works intermittently or not at all.
- ✔ Your airbag warning light is on, often with a DTC B1001 code.
- ✔ Power windows, door locks, or interior/exterior lights are behaving erratically.
- ✔ The vehicle’s security system is malfunctioning, causing no-start or stalling conditions.
- ✔ You’re experiencing strange grounding issues or a variety of communication DTCs.
A Straightforward Guide to Your BCM Installation
Replacing your GM Body Control Module is a job most DIYers can handle in their own driveway. The module is typically located under the driver’s side dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most GM trucks and SUVs, you’ll find it attached to a metal bracket under the dash. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting location.
- Install the New Module: Seat the new, pre-programmed BCM in place and plug in the electrical connectors until they click securely. Re-install any panels you removed.
- Reconnect & Test: Reconnect the negative battery terminal. Start the vehicle and test all functions: lights, wipers, locks, windows, and HVAC to confirm the repair.
Important Post-Installation Procedures
After installing your new BCM, a couple of steps may be necessary to ensure full system functionality:
- Airbag System Reset: If the airbag light remains on (DTC B1001), you must perform the ‘Setup SDM Primary Key in BCM’ procedure. This requires a professional-grade scan tool with access to BCM special functions.
- Brake Pedal Position Sensor Relearn: Some vehicles require a brake pedal position sensor recalibration after BCM replacement to ensure proper brake light operation and stability control performance.
Note: Always consult your vehicle’s service manual or a professional technician if you are unsure about these procedures.
Verified Vehicle Compatibility
This module is a direct replacement for a wide range of popular GM vehicles and interchanges with numerous part numbers, including 25844480, 25835966, 15263497, and 15878753. It is guaranteed to fit the following models:
- Cadillac Escalade / ESV / EXT (2007-2011)
- Chevrolet Avalanche 1500 (2007-2011)
- Chevrolet Silverado 1500 / 2500 / 3500 (2007-2011, plus some 2013 models)
- Chevrolet Suburban 1500 / 2500 (2007-2011)
- Chevrolet Tahoe (2007-2011)
- GMC Sierra 1500 / 2500 / 3500 & Denali (2007-2011, plus some 2013 models)
- GMC Yukon / XL / Denali (2007-2011)
Frequently Asked Questions
Do I need to program this GM Body Control Module?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you the time and expense of a dealership visit.
Where is the BCM located on my 2008 Silverado?
On most 2007-2013 GM trucks and SUVs, the BCM is located under the driver-side dashboard, to the left of the steering column. You may need to remove a plastic trim panel to see it clearly.
Will this part fix my airbag light with code B1001?
Yes, a faulty BCM is a common cause of the B1001 code. However, after installing the new module, you must perform the ‘Setup SDM Primary Key in BCM’ procedure with a compatible scan tool to clear the code and reset the airbag system.
What if the part number on my old module is different?
This module replaces many different GM part numbers. As long as your vehicle’s year, make, and model are on our compatibility list, this part will function correctly. The VIN programming ensures it has the right software for your specific options.
Is there a core charge for this part?
No, there is no core charge. You can keep or dispose of your old module without needing to send it back to us.