Restore Your Vehicle’s Electrical Functions and Stability

Are you chasing electrical gremlins in your GM vehicle? Flickering lights, power windows with a mind of their own, or a security system that randomly acts up are more than just annoyances—they’re classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s comfort and convenience features, a faulty BCM can disrupt everything from your interior lights to your door locks. This isn’t just a part; it’s the solution to restoring order and predictability to your car, truck, or SUV.

We offer a dependable, direct-fit replacement GM Body Control Module that arrives at your door pre-programmed to your vehicle’s specific VIN. Simply provide us with your Vehicle Identification Number after purchase, and our technicians will flash the module with the latest software from GM. This critical step ensures seamless communication with your vehicle’s other electronic systems, saving you a costly trip to the dealership and hours of diagnostic headaches.

Common Signs of a Failing BCM

If your vehicle is exhibiting any of these behaviors, a faulty BCM is the likely cause. Replacing it can resolve these persistent problems and restore proper functionality.

• ✔ Power windows or door locks working erratically or not at all.
• ✔ Interior dome lights or dashboard lights staying on or not turning on.
• ✔ The anti-theft or security system light is illuminated, preventing the engine from starting.
• ✔ Horn honking unexpectedly or not working when pressed.
• ✔ Communication Diagnostic Trouble Codes (DTCs) such as U0140, U0155, or U0164.
• ✔ Wipers activating on their own or not responding to the switch.

A Straightforward Guide to Your BCM Replacement

Installing your new BCM is a manageable job for a DIY enthusiast. While specific locations vary, this general guide will help you through the process. Always consult a vehicle-specific service manual for detailed diagrams.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
2. Locate the BCM: On most compatible models, the BCM is located under the driver’s side of the dashboard, often to the left of the steering column or in the center dash area. You may need to remove a lower dash panel for access.
3. Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
4. Install the New Module: Mount your new, pre-programmed GM Body Control Module in the same location. Securely plug in all the electrical connectors, ensuring each one clicks firmly into place.
5. Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all related functions: lights, locks, windows, wipers, and horn.

Important Post-Installation Notes

This module is designed to be as plug-and-play as possible. However, due to the complexity of modern vehicle systems, a couple of additional steps may be required in certain situations:

• Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This syncs the new BCM with the airbag system and requires a professional-grade scan tool.
• Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be necessary to ensure correct brake light and traction control operation.
• No Core Charge: You can keep your old part! There is no core charge or need to return the original module.

Verified Vehicle Compatibility List

This Body Control Module is a direct replacement for numerous part numbers and fits a wide range of GM vehicles. Please verify your model and year below. Part numbers this module replaces include: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, and 95151084.