Is Your GM Vehicle Experiencing Bizarre Electrical Issues?
If your Chevrolet, GMC, Cadillac, or other GM vehicle is acting possessed—with flickering lights, malfunctioning power windows and locks, a persistent security light, or a no-start condition—a failing Body Control Module (BCM) is often the culprit. The BCM is the central computer for your vehicle’s body electronics, and when it fails, it can cause a wide range of frustrating and difficult-to-diagnose problems. Don’t let electrical gremlins sideline your truck or SUV. This is the reliable, straightforward solution you need.
From the Diagnostic Bay
We had a 2010 Chevy Tahoe come in that was driving the owner crazy. The radio would turn on and off by itself, the dome lights wouldn’t work, and occasionally the truck wouldn’t start, showing a ‘Service Theft Deterrent System’ message. The owner had already replaced the battery and checked the alternator. After hooking up our scanner, we saw multiple communication loss codes with various modules. This pointed directly to the BCM. We installed a VIN-programmed module, and all the strange electrical issues vanished instantly. It saved the customer from chasing down phantom wiring problems for weeks.
Symptoms of a Failing Body Control Module
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ ‘Service Theft Deterrent System’ or other security warnings on the dash.
- ✔ Intermittent no-start conditions where the engine cranks but won’t fire.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ Inaccurate gauge readings or dead gauges.
- ✔ Communication errors with other vehicle modules (DTC U-codes).
The Simple, Reliable Solution: A VIN-Programmed BCM
Replacing a BCM used to mean a trip to the dealership for expensive installation and programming. Our process eliminates that hassle. We offer a direct-fit 2010 Avalanche Body Control Module that is pre-programmed to your vehicle’s specific VIN before it ships. This ensures that the module communicates perfectly with your vehicle’s existing systems right out of the box. Simply provide us with your VIN, and we handle the complex programming for you, making installation as simple as swapping the part.
Important Post-Installation Information
While our BCMs are designed for a straightforward installation, some vehicles may require additional steps to ensure all systems are synchronized. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure correct brake light operation and to keep the traction control system happy.
Always consult a factory service manual or a qualified technician if you are unsure about any part of the installation process.
Frequently Asked Questions
Why do you need my VIN?
Your vehicle’s VIN (Vehicle Identification Number) allows us to program the BCM with the exact software and settings for your specific options package. This ensures the module works correctly right out of the box without needing a trip to the dealer for programming.
Is this part difficult to install?
The physical installation is typically straightforward, involving removing a few dash panels and unplugging the old module to plug in the new one. The location varies by model (e.g., under the steering column, behind the dash). The most important part is that the programming is already done for you.
Will this BCM fit my vehicle?
This module is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers. Please review the detailed fitment list and part numbers on this page to confirm compatibility with your specific make, model, and year.
What if my airbag light is on after I install it?
This is a known possibility. The new BCM needs to be electronically ‘introduced’ to your vehicle’s airbag module (SDM). A mechanic with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Is there a core charge?
No, there is no core charge for this part. You can keep your old module.