Restore Your Truck’s Electrical Functions with a Plug-and-Play BCM
Is your 2010 Chevrolet Avalanche experiencing bizarre electrical issues? Flickering lights, malfunctioning power windows and locks, a security system that won’t cooperate, or even a no-start condition can all point to a single culprit: a failing Body Control Module (BCM). The BCM acts as the central command center for your truck’s body electronics, and when it malfunctions, it can create a cascade of frustrating and seemingly unrelated problems. This replacement Body Control Module, part number 15921353, is the definitive solution to get your vehicle back in perfect working order without the exorbitant costs and hassle of a dealership visit.
We take the guesswork and complexity out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our expert technicians will program the module with the latest official GM software specific to your Avalanche. This means the unit arrives at your door ready for installation, eliminating the need for expensive dealer-specific programming tools. This is the most efficient and reliable way to replace a faulty 2010 Avalanche BCM and restore your vehicle’s functionality and your peace of mind.
From the Diagnostic Bay
We recently had a 2010 Avalanche towed in that the owner described as being “possessed.” The dome lights would stay on, the radio would randomly change stations, and the key fob worked only when it wanted to. The final straw was when the truck refused to start, with the security light flashing on the dash. After confirming the battery and main grounds were solid, we connected our diagnostic scanner. It revealed a slew of communication error codes all pointing back to the BCM. Instead of a complex and costly rewiring job, we installed a VIN-programmed BCM. In less than an hour, every single electrical gremlin was gone. The owner was thrilled to have his reliable truck back without a massive dealership bill.
Common BCM Failure Symptoms
- ✔ Intermittent or non-functional power windows, door locks, and mirrors.
- ✔ Erratic behavior from interior or exterior lights (flickering, staying on, or not working at all).
- ✔ The security or anti-theft system light is illuminated, preventing the engine from starting.
- ✔ Inconsistent or failed operation of the key fob and remote start.
- ✔ False warnings on the instrument cluster (e.g., “Door Ajar” when all doors are closed).
- ✔ HVAC (heating and air conditioning) controls not responding correctly.
- ✔ Communication errors with other vehicle modules, leading to warning lights like ABS or Traction Control.
Why Choose Our Pre-Programmed 2010 Avalanche BCM?
Choosing our pre-programmed module is the smartest way to handle this critical repair. A BCM from a salvage yard won’t work, as it’s locked to the original vehicle’s VIN. A new module from the dealership comes blank and requires you to have the vehicle towed in for costly programming. Our solution provides the best of both worlds: a fully updated, correctly configured module that you can install yourself. We flash it with the most current GM calibrations, which can resolve issues that were present even in the original factory software. By matching the programming to your VIN, we ensure all your vehicle’s specific options and security information are correctly loaded, making the installation process as seamless as possible.
Important Post-Installation Procedures
While this module is designed for straightforward installation, some GM vehicles require additional steps to ensure all systems communicate correctly after the new BCM is installed. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is on after installation, a “Setup SDM Primary Key in BCM” procedure is necessary. This requires a professional-grade scan tool to sync the new BCM with the airbag system’s Sensing and Diagnostic Module (SDM).
- Brake Pedal Position Relearn: To ensure proper brake light operation and stability control function, a brake pedal position sensor recalibration may be required. This also typically requires a diagnostic tool.
Always consult a factory service manual or a qualified technician if you are unsure about performing these steps.
Frequently Asked Questions
Why do you need my vehicle’s VIN?
Your Vehicle Identification Number (VIN) is essential for us to program the BCM correctly. It allows us to load the exact software and settings for your vehicle’s specific options, such as the type of transmission, security system, and other electronic features. This ensures a true plug-and-play installation.
Is this part difficult to install?
The physical installation is generally straightforward for someone with basic mechanical skills. The BCM is typically located under the steering column or behind the dash. However, as noted, some vehicles may require post-installation relearn procedures with a professional scan tool to clear warning lights like the airbag light.
What happens if I don’t perform the post-installation relearns?
If your vehicle requires these procedures and they are not performed, you may have persistent warning lights on your dashboard (like the airbag light) or certain systems may not function as intended. For safety systems like airbags and brakes, it is critical to ensure they are properly synced.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module, which can be helpful for comparison or as a backup if needed for diagnostics.
How can I be certain my BCM is the problem?
The symptoms listed above are strong indicators of a failing BCM. However, similar issues can sometimes be caused by poor battery connections, faulty ground wires, or other failing modules. If you are not 100% certain, a professional diagnosis from a qualified mechanic is recommended to confirm the BCM is the root cause before ordering.