If you’re dealing with bizarre electrical issues in your 2010 Chevrolet Avalanche 1500, you know how frustrating it can be. One minute the power locks work, the next they don’t. The security light might be on, or your dashboard is lit up with random warnings. These aren’t just annoyances; they’re often symptoms of a failing Body Control Module (BCM), the central computer for your truck’s body electronics. This isn’t a part you can ignore, as it governs everything from your interior lights to your vehicle’s security system.
We offer a dependable and straightforward solution: a replacement Body Control Module, professionally programmed to your vehicle’s specific VIN. By providing your VIN at checkout, we ensure the module arrives with the latest GM software updates already installed. This means you can bypass the expensive and time-consuming trip to the dealership for programming. This is the same reliable process we’ve used in our shops for years to get customers back on the road safely and affordably.
A Technician’s Notebook
I remember a 2010 Tahoe—which uses the same platform as your Avalanche—that came into the bay with a laundry list of complaints. The owner said the radio would turn off randomly, the driver’s side window wouldn’t go down, and the remote key fob was dead. He’d already replaced the battery and checked fuses. After connecting my scan tool, I found multiple U-codes (communication errors) pointing to the BCM. Instead of a complex wiring repair, the fix was a new, correctly programmed 2010 Avalanche 1500 BCM. Once installed, all the ghost-like problems vanished instantly. It’s a common failure point I’ve seen hundreds of times.
Common Signs of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that flicker, stay on, or don’t work at all.
- ✔ The security system light is illuminated, and the engine may not start (Passlock/Passkey issues).
- ✔ Dashboard warning lights (like ABS or Airbag) appearing without a clear cause.
- ✔ Remote keyless entry (fob) stops working.
- ✔ Communication error codes, such as U0140, U0155, or other U-codes, stored in the system.
A Straightforward Guide to Installation
Installing your new BCM is manageable for a confident DIYer. For the 2010 Avalanche, the BCM is typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait about 10 minutes to allow all systems to power down completely.
- Locate the BCM: Remove any lower dash panels needed to access the module. It’s a black plastic box with several large multi-pin electrical connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same location. Securely plug in all the electrical connectors, making sure they click into place.
- Reconnect Power: Reconnect the negative battery terminal.
- Post-Installation Procedures: Turn the key to the ‘ON’ position and check for proper function of lights and accessories. As noted in our technical information, some vehicles may require additional steps. If the airbag light is on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key’ procedure. A ‘Brake Pedal Position Relearn’ may also be necessary for proper brake light and traction control operation.
Disclaimer: This is a general guide. Always consult a vehicle-specific service manual for detailed instructions and torque specifications.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 15921352 and is interchangeable with a wide range of other part numbers. It fits numerous GM vehicles. Please verify your vehicle is on this list and that the location matches. For truck/SUV models like the Tahoe, Suburban, and Avalanche, the BCM is typically under the steering column. For others like the Impala or Acadia, it’s often in the LH dash area.
Fits Models Including: ACADIA (07-12), AVALANCHE 1500 (10), CAPRICE (11-13), CAPTIVA SPORT (12), CTS (08-13), DTS (06-11), ENCLAVE (08-12), EQUINOX (07-09), ESCALADE / ESV / EXT (10), EXPRESS/SAVANA VANS (08-12), G8 (08-09), HUMMER H2 (08-09), IMPALA (06-13), LUCERNE (06-11), MONTE CARLO (06-07), OUTLOOK (07-10), SRX (07-09), STS (10), SUBURBAN 1500 (10), TAHOE (10), TORRENT (07-09), TRAVERSE (09-12), VUE (08-10), YUKON / YUKON XL 1500 (10). Please match the ID number from your original part when specified in the fitment data.
Frequently Asked Questions
Frequently Asked Questions
Does this 2010 Avalanche 1500 BCM require programming?
No. We program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you a trip to the dealer.
Do I need to send my old part back? Is there a core charge?
No, there is absolutely no core charge for this part. You can keep your original module.
What happens if my airbag light is on after installation?
This can happen occasionally. It means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). A repair shop with a high-end diagnostic tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve it.
Is this a difficult part to install myself?
For someone with basic mechanical skills and tools, it is a manageable job. The primary challenge is typically accessing the module’s location under the dashboard. Following a guide and taking your time is key.