Restore Full Electrical Function to Your GM Truck or SUV
Are you battling a frustrating array of electrical issues in your Chevrolet, GMC, or Cadillac? Flickering lights, unresponsive power windows, erratic HVAC controls, and mysterious warning lights are all classic signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s comfort and convenience features. When it fails, it can make your daily drive a nightmare. This genuine OEM-quality GM Body Control Module, corresponding to part numbers 15901388 and 25844480, is the definitive solution to restore your vehicle’s electronic systems to perfect working order.
Diagnosing a Faulty GM Truck Body Control Module
A failing BCM can manifest in numerous ways, often creating problems that seem completely unrelated. If your truck or SUV is experiencing several of the following symptoms, a faulty BCM is the most likely culprit. This replacement module is engineered to resolve these exact issues, getting you back on the road with confidence.
Common Symptoms of BCM Failure
- ✔ Unresponsive or erratic climate controls, including a blower motor that won’t turn on or off.
- ✔ Power windows, door locks, or exterior lights failing intermittently or not working at all.
- ✔ An illuminated airbag warning light on the dash, often accompanied by diagnostic trouble code (DTC) B1001.
- ✔ Vehicle security system malfunctions, leading to no-start conditions, random alarm activation, or stalling.
- ✔ A variety of seemingly random electrical issues and a dashboard that lights up with multiple warnings.
The Plug-and-Play Advantage: VIN Programming Included
Don’t waste time and money on a trip to the dealership. We pre-program this module to your vehicle’s specific Vehicle Identification Number (VIN) before shipping. This critical step ensures that the BCM communicates flawlessly with your vehicle’s other electronic systems right out of the box. It recognizes all the specific options your vehicle was built with, from the sound system to the type of headlights, for a seamless and error-free installation. Simply provide your VIN at checkout, and we’ll handle the rest.
Installation and Post-Install Procedures
Physically installing the BCM is straightforward. It is typically located under the driver’s side dashboard, near the steering column, and can be swapped in minutes with basic hand tools. While our VIN programming makes this a plug-and-play repair, some vehicles may require a simple relearn procedure after installation.
- Airbag System Sync: If the airbag warning light remains on after installation, a technician will need to perform the ‘Setup SDM Primary Key in BCM’ function using a professional diagnostic tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure proper brake light and traction control operation.
This module is a direct replacement for a wide range of part numbers, including 25835966, 15943678, 25971916, 20939137, and 22860591. There is no core charge, so you can keep your old part without any hassle.
Frequently Asked Questions
What does the Body Control Module do on my Silverado or Escalade?
The BCM is a computer that controls most of your vehicle’s non-engine related electronics. This includes the power windows, locks, interior and exterior lights, wipers, security system, and HVAC climate controls.
Is this BCM really plug-and-play?
Yes. Because we program it to your vehicle’s VIN before it ships, it is ready for installation without requiring a trip to the dealer for programming. In some cases, a simple ‘relearn’ procedure for the airbag system may be required, which can be done with a capable scan tool.
Will this fix my airbag light and code B1001?
This module will fix the hardware fault causing the code. However, after installation, you will likely need to have the ‘Setup SDM Primary Key in BCM’ procedure performed with a professional scan tool to sync the new BCM to the airbag system and turn off the light.
Where is the BCM located on a 2008 GMC Sierra?
On most 2007-2013 GM trucks and SUVs, including the Sierra, the BCM is located under the driver’s side of the dashboard, usually to the left of the steering column.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module without any additional fees or hassle.
Does this part come with a warranty?
Yes, this part is backed by our standard one-year warranty against any defects, giving you peace of mind with your purchase.