Restore Your Acadia’s Electrical System with a Reliable, Programmed BCM
Are you chasing frustrating electrical gremlins in your 2007-2012 GMC Acadia? Intermittent warning lights, flickering gauges, power windows with a mind of their own, or even a vehicle that refuses to start can all point to a single, critical component: a failing Body Control Module (BCM). As the central nervous system for your vehicle’s comfort and convenience features, a faulty BCM can wreak havoc, making your daily drive unpredictable and stressful. In my 20+ years diagnosing these exact issues, I’ve seen how a compromised BCM can mimic a dozen other problems, leading to wasted time and money on incorrect repairs.
This isn’t just a replacement part; it’s a direct solution. We take the guesswork and hassle out of the repair by professionally programming this BCM to your vehicle’s specific VIN before it ships. This means you can bypass the expensive trip to the dealership for programming. You get a component that’s loaded with the latest GM software updates and is ready for installation right out of the box, saving you hundreds in potential labor and programming fees. This is the smart, efficient way to get your Acadia back to 100%.
From the Diagnostic Bay: The Case of the Haunted Acadia
I remember a 2011 Acadia that came into the shop with a list of complaints that sounded like something out of a horror movie. The interior lights would fade on and off while driving, the radio would randomly change stations, and occasionally, the liftgate would open on its own. The owner had already replaced the battery and checked the alternator. A quick scan with a pro-level tool revealed a flood of U-codes (communication errors) all pointing back to one culprit. The BCM was failing internally, sending erratic signals across the vehicle’s network. Installing a new, properly programmed 2007-2012 Acadia BCM didn’t just fix one problem—it solved all of them instantly. It’s a classic failure pattern for these vehicles.
Is Your Acadia Showing These Signs of a Failing BCM?
- ✔️ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔️ Interior or exterior lights flickering, staying on, or not working.
- ✔️ The security system light is on, or the alarm randomly triggers.
- ✔️ The engine cranks but won’t start, or there’s an intermittent no-start condition.
- ✔️ Warning messages on the dash, such as “Service Stabilitrak,” “Service Traction Control,” or other system alerts.
- ✔️ Communication-related Diagnostic Trouble Codes (DTCs), especially U-codes like U0140, are present.
- ✔️ The key fob stops working reliably.
A Straightforward Guide to Your BCM Installation
For the confident DIYer or professional technician, swapping the BCM is a manageable job. The key is our pre-programming service, which eliminates the most complex step.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronic components.
- Locate the Module: In the GMC Acadia (and its platform mates like the Traverse and Enclave), the BCM is typically located under the driver’s side of the dashboard, to the left of the steering column.
- Disconnect and Remove: Carefully unplug the multiple electrical connectors. They have locking tabs that need to be depressed. Once disconnected, remove the bolts or nuts holding the BCM in its bracket.
- Install the New BCM: Mount your new, pre-programmed module in place and ensure it is secure. Reconnect all electrical connectors, making sure each one clicks firmly into place.
- Power Up and Test: Reconnect the negative battery terminal. Start the vehicle and perform a full function check: test all lights, windows, locks, wipers, and radio functions to confirm the repair.
Important Post-Installation Steps
While our programming handles the heavy lifting, some vehicle systems may need to be re-synced after the new BCM is installed. This is normal. 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 required to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be needed to ensure correct brake light operation and to clear any traction control system warnings.
Disclaimer: Procedures can vary. We always recommend consulting a factory service manual or a qualified technician for your specific vehicle.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 20935349 and interchanges with a wide range of other part numbers. It is guaranteed to fit the following models, among others. Please verify your part number or contact us with your VIN to ensure compatibility.
Chevrolet: TRAVERSE (2009-2012), IMPALA (2006-2013), TAHOE / SUBURBAN / AVALANCHE (2010), EQUINOX (2007-2009), EXPRESS VANS (2008-2012), CAPTIVA SPORT (2012), MONTE CARLO (2006-2007)
Buick: ENCLAVE (2008-2012), LUCERNE (2006-2011)
Cadillac: CTS (2008-2013), DTS (2006-2011), SRX (2007-2009), STS (2010), ESCALADE / ESV / EXT (2010)
And more: Including Saturn Outlook, Pontiac Torrent/G8, and Hummer H2.
Frequently Asked Questions
Frequently Asked Questions
Do I need to take my vehicle to the dealer for programming?
Absolutely not. The main benefit of our service is that we program the BCM to your vehicle’s VIN before we ship it. It arrives ready for installation, saving you time and money.
What exactly does the Body Control Module do?
The BCM is a computer that manages most of the non-engine related electronics in your vehicle. This includes the power windows, locks, interior and exterior lighting, security system, wipers, and various other comfort and convenience features.
Is there a core charge for this part?
No, there is no core charge. You can keep your old module, so you don’t have to worry about the cost or hassle of shipping it back.
What information do you need from me to program the BCM?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit VIN (Vehicle Identification Number). This ensures we can load the correct software and settings for your specific car.
My airbag light came on after I installed the BCM. Is it defective?
No, this is a common occurrence. The BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems and turn off the light.
Will this 2007-2012 Acadia BCM fit other GM vehicles?
Yes, this module is used across a very wide range of GM cars, trucks, and SUVs from this era. Please check the detailed fitment list on this page or send us your VIN to confirm it’s the right part for your vehicle.