Is Your GM Truck or SUV Plagued by Electrical Gremlins?
If you’re dealing with flickering lights, a malfunctioning climate control system, or power windows and locks with a mind of their own, a faulty Body Control Module (BCM) is the likely culprit. The BCM acts as the central command center for your vehicle’s body electronics. When it fails, it can cause a cascade of frustrating and seemingly unrelated issues. This genuine OEM-quality GM Body Control Module is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a true plug-and-play repair.
From the Diagnostic Bay
We had a 2011 Silverado 2500 in the shop that was driving the owner crazy. The dome lights would stay on, the radio would cut out, and the security light would flash intermittently, sometimes preventing the truck from starting. The owner had already replaced the battery and checked fuses. After scanning, we found a slew of communication error codes pointing to the BCM. Upon removal, we noticed a faint trace of corrosion on one of the connector pins. A new, programmed BCM fixed every single issue. It’s a reminder that this single module is tied into so many critical systems.
Symptoms of a Failing GM Body Control Module
- ✔ Power windows, door locks, or mirrors not working or operating erratically.
- ✔ Interior or exterior lights staying on, not turning on, or flickering.
- ✔ HVAC and climate control functions are unresponsive or blower motor issues.
- ✔ Vehicle security system malfunctions, causing no-start conditions.
- ✔ Airbag warning light illuminated on the dash, often with DTC B1001.
- ✔ Intermittent stalling, misfires, or other performance problems tied to electrical grounding.
- ✔ Multiple diagnostic trouble codes (DTCs) related to body systems.
The Plug-and-Play Solution
Forget expensive dealership visits and programming fees. We simplify the repair process by programming this module to your vehicle’s specific VIN number before it ships. This ensures that all factory settings and vehicle options are correctly configured, allowing for a seamless installation. Simply locate the old module under the driver’s side dash, swap it with your new one, and restore full functionality to your vehicle. This module is a direct replacement for a wide range of part numbers, including 25835966, 15943678, 25971916, 25971917, 20939137, and 22860591.
Post-Installation Procedures
While the module is programmed for your vehicle, some systems may require a relearn or sync procedure after installation. If the airbag warning light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. Additionally, a Brake Pedal Position Relearn might be necessary on some models to ensure proper brake light and stability control operation. Always consult a factory service manual for your specific vehicle.
Frequently Asked Questions
What does a Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related functions, such as power windows, locks, lights, wipers, security system, and climate controls.
Is this BCM really plug-and-play?
Yes, because we program it with your vehicle’s VIN before shipping, it will integrate with your vehicle’s existing systems without needing additional programming from a dealership for most functions. Some safety systems, like the airbag, may require a sync procedure as noted.
Where is the BCM located on my truck or SUV?
On most 2007-2013 GM trucks and SUVs like the Sierra, Silverado, and Tahoe, the BCM is located under the driver’s side of the dashboard, near the steering column.
Why is my airbag light on after installing the new BCM?
The airbag system (SDM) and BCM are linked for security. If the light is on, it means they need to be electronically re-synced. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.
Do I need to return my old part?
No, there is no core charge for this part. You can keep or dispose of your original module without any hassle.