Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your Chevrolet Avalanche, Silverado, or Tahoe? Intermittent power windows, a malfunctioning HVAC system, or random warning lights are common signs of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a cascade of confusing issues. This genuine GM Body Control Module, interchangeable with part number 22860591, is the definitive solution to restore your vehicle’s performance and reliability.
From the Diagnostic Bay
We had a 2010 Silverado 1500 in the shop that was driving the owner crazy. The radio would turn off randomly, the driver’s side power window worked only when it wanted to, and the anti-theft light would flash, sometimes preventing the truck from starting. The owner had already replaced the window switch and checked fuses with no luck. After a quick scan, we saw multiple communication codes pointing to the BCM. Instead of a dozen small problems, it was one central failure. Installing a VIN-programmed BCM like this one solved every single issue in under 10 minutes. It’s a classic case where chasing individual symptoms can be a waste of time and money when the root cause is the main controller.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights (headlights, taillights, dome lights) failing to work correctly.
- ✔ HVAC controls are unresponsive, or the blower motor works intermittently.
- ✔ The vehicle’s security system malfunctions, causing no-start conditions or false alarms.
- ✔ Airbag warning light is illuminated on the dash, often with DTC B1001.
- ✔ Unexplained battery drain while the vehicle is parked.
- ✔ Wipers behaving unpredictably or not turning off.
Why Choose Our Pre-Programmed 2007-2011 Avalanche BCM?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We pre-program the module to your vehicle’s specific Vehicle Identification Number (VIN) before shipping. This critical step ensures that the BCM communicates flawlessly with all other modules in your truck, like the Engine Control Module (ECM) and Transmission Control Module (TCM). You get a true plug-and-play installation without the need for an expensive trip to the dealership for programming.
Located conveniently under the driver’s side dash near the steering column, the physical swap is straightforward for any DIYer. Once installed, your vehicle’s essential functions will be restored. Please note that in some cases, particularly if the airbag light was on, a post-installation procedure like an ‘SDM Key Sync’ may be required using a professional scan tool to clear the light. This is a simple sync procedure, not a full programming session.
Frequently Asked Questions
What does the Body Control Module (BCM) do on my 2008 Silverado?
The BCM is a computer that manages and controls most of your truck’s non-engine related electronic systems. This includes power windows, door locks, the security system, interior and exterior lighting, wipers, and the HVAC climate control system.
Is this module ready to install out of the box?
Yes! We program the module to your vehicle’s VIN before it ships. This makes the installation plug-and-play, eliminating the need for additional dealership programming for the module to function correctly.
My airbag light is on. Will this BCM fix it?
If the airbag light is caused by a faulty BCM (often indicated by code B1001), this replacement will solve the root problem. However, after installation, you may need a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the new BCM with the airbag system and turn off the light.
Where is the BCM located on my 2007-2011 Avalanche BCM?
The BCM is typically located under the driver’s side dashboard, to the left of the steering column. It’s an accessible location that usually requires removing a lower dash panel for access.
Do I have to send my old part back?
No, there is no core charge for this part. You can keep your old module, which saves you the time and hassle of a return shipment.