Solve Your Truck’s Electrical Nightmares
Is your 2007-2011 Chevrolet Avalanche 1500 acting possessed? Flickering lights, a dead A/C blower, or power windows with a mind of their own are classic signs of a failing Body Control Module (BCM). As the central command for your truck’s comfort and convenience features, a faulty BCM can cause a cascade of frustrating, hard-to-diagnose issues. This OEM-quality replacement, part number 15901388, is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a true plug-and-play installation.
A Technician’s Notebook: The Grounding Gremlin
I once had a 2009 Sierra in the bay with the wildest symptoms—the radio would cut out on right turns, the dome light would flicker, and the driver’s window worked intermittently. The customer had already replaced the battery and alternator. After checking the network, I suspected the BCM. When I pulled the old module, I noticed a faint trace of corrosion on the main ground pin. These GMT900 platforms are notorious for a small water leak from the cowl or A-pillar that drips right onto the BCM area. A new, properly sealed BCM fixed everything instantly. It’s a reminder that over 50% of electronic failures I see are rooted in a bad ground or voltage issue, and this module is often the victim.
Is Your Avalanche Exhibiting These Symptoms?
A failing BCM doesn’t always throw a check engine light. Instead, it creates a host of confusing electrical problems. If you’re experiencing any of the following, your BCM is the likely culprit:
- ✔ The A/C and heater controls are unresponsive or the blower motor works sporadically.
- ✔ Your power windows, door locks, or interior/exterior lights fail to operate correctly.
- ✔ The security system acts up, causing no-start conditions, stalling, or random alarms.
- ✔ An airbag warning light is illuminated, often with a persistent DTC B1001 (Setup SDM Primary Key in BCM).
- ✔ The instrument cluster displays erratic warnings or gauges behave abnormally.
- ✔ Communication errors are present across various modules on the CAN bus network.
Your Straightforward 5-Minute Installation Guide
Replacing your 2007-2011 Avalanche 1500 BCM is a simple job that saves you a costly trip to the dealership. No complex wiring or software flashing required.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronics.
- Locate the BCM: You’ll find the module tucked under the driver’s side dashboard, just to the left of the steering column.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have release tabs that need to be pressed. Once disconnected, the old BCM can be unclipped from its mounting bracket.
- Install the New Module: Snap the new, VIN-programmed BCM into the bracket and firmly reconnect all electrical connectors until they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start your Avalanche and test all functions—lights, windows, locks, wipers, and HVAC—to confirm the repair was successful.
Post-Installation Note: In some cases, particularly if you had an airbag light, a professional scan tool may be needed to perform the “Setup SDM Primary Key” function to clear the light. A “Brake Pedal Position Relearn” may also be required on certain models. These are simple procedures for any qualified shop.
Verified Fitment For Your GM Truck or SUV
This module is a direct replacement for a wide range of General Motors vehicles, ensuring perfect compatibility. It interchanges with part numbers including 15901388, 25835966, 20939137, and 22860591. Please verify your model and year below:
Avalanche 1500 (2007-2011)
Silverado 1500/2500/3500 (2007-2013)
Suburban 1500/2500 (2007-2011)
Tahoe (2007-2011)
Sierra 1500/2500/3500 (2007-2013)
Sierra Denali (2007-2013)
Yukon & Yukon XL (2007-2011)
Escalade, ESV, EXT (2007-2011)
Frequently Asked Questions
Do I need to take this BCM to the dealer for programming?
No. We program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you hundreds in dealership fees.
Is this a difficult part for a DIYer to install?
Not at all. The BCM is easily accessible under the driver’s side dash and requires no special tools to replace. The entire job typically takes less than 10 minutes.
What if my airbag light is still on after installation?
This is a known GM security feature. The ‘Setup SDM Primary Key in BCM’ procedure must be performed using a bi-directional scan tool. This syncs the new BCM with the airbag system. Most independent repair shops can perform this service.
Do I need to send my old BCM back?
No. There is absolutely no core charge for this part. You can keep or dispose of your old module at your convenience.
What is the warranty on this part?
This Body Control Module is backed by our comprehensive one-year warranty, giving you peace of mind with your purchase.