Restore Command Over Your Vehicle’s Electronics
Are you battling a frustrating array of electrical gremlins in your GM truck or SUV? A faulty Body Control Module (BCM) is often the culprit behind issues like malfunctioning lights, unresponsive power locks, erratic HVAC controls, and mysterious warning lights. The BCM acts as the central nervous system for your vehicle’s body accessories. When it fails, it can make your daily drive a nightmare. This genuine GM 25844480 Body Control Module, which interchanges with part number 25790508, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a seamless, plug-and-play installation.
Common Symptoms of BCM Failure
- ✔ Inoperative power windows, door locks, or remote keyless entry.
- ✔ HVAC blower motor stuck on one speed or not working at all.
- ✔ Interior or exterior lights that flicker, stay on, or won’t turn on.
- ✔ An active airbag warning light, often with DTC B1001.
- ✔ Security system errors, causing no-start or stalling conditions.
- ✔ A variety of communication-related Diagnostic Trouble Codes (DTCs).
- ✔ Wipers behaving erratically or not functioning.
Installation and Post-Install Procedures
Physically replacing the BCM is straightforward. It is typically located under the driver’s side dashboard and can be swapped in minutes. Because this module comes programmed to your VIN, no initial dealership visit is required. However, be aware of a few potential post-installation steps. If the airbag light remains on, a technician will need to perform the ‘Setup SDM Primary Key in BCM’ procedure using a professional scan tool. In some cases, a ‘Brake Pedal Position Relearn’ may also be necessary to ensure all safety systems are calibrated correctly. This pre-programmed 2011 Sierra Denali BCM is your first and most important step to restoring your truck’s functionality.
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 electronic features, including the power windows, locks, lights, wipers, security system, and HVAC controls.
Will I need to program this module?
No. We pre-program the module to your vehicle’s VIN before shipping. This ensures it works right out of the box without requiring an expensive trip to the dealership for programming.
Is this part difficult to install?
The physical installation is simple for most DIY mechanics, typically taking less than 15 minutes. The module is usually located under the steering column. However, post-installation electronic procedures like an airbag sync may require a professional scan tool.
My airbag light is on. Will this fix it?
If the airbag light is caused by a faulty BCM (often indicated by code B1001), this part will resolve the root cause. However, you will still need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a compatible scan tool to sync the new BCM with the airbag system and turn off the light.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep or dispose of your old module without any hassle.