Restore Your Vehicle’s Electrical System with a Reliable, Programmed BCM
Are you chasing electrical gremlins in your GM vehicle? Flickering lights, power windows with a mind of their own, or a dashboard that lights up with random warnings are classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can make your car or truck feel unreliable and frustrating. I’ve seen it hundreds of times in the shop—a perfectly good engine that won’t start because the BCM isn’t communicating correctly with the security system. This isn’t just an inconvenience; it’s a critical failure that needs a dependable solution.
This isn’t a used part from a junkyard with an unknown history. This is a quality-tested GM Body Control Module, programmed with the latest GM software specifically for your vehicle’s Vehicle Identification Number (VIN). This critical step ensures that when you receive the part, it’s ready for installation, saving you a costly trip to the dealership for programming. We handle the complex part so you can focus on the straightforward installation.
A Technician’s Notebook: The 2016 Traverse with a Mind of its Own
A customer brought in their 2016 Chevy Traverse, complaining of a battery that would die overnight and power locks that worked intermittently. They had already replaced the battery twice. My initial scan showed a slew of communication codes (U-codes), all pointing to the BCM. After confirming power and grounds to the module were good, I knew the internal logic of the BCM itself was failing. It was keeping other modules awake, causing a parasitic draw that drained the battery. We replaced it with a VIN-programmed unit just like this one. The electrical gremlins vanished, the battery drain was gone, and the customer had their reliable family vehicle back. This is a common failure, and a pre-programmed module is the most efficient fix.
Is Your Vehicle Showing These BCM Failure Signs?
A failing BCM can cause a wide range of confusing symptoms. If you’re experiencing any of the following, your BCM is the likely culprit:
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or not turning on.
- ✔ The security system alarm going off randomly or preventing the vehicle from starting.
- ✔ Inaccurate or non-functional gauges on the instrument cluster.
- ✔ Warning lights such as the airbag, ABS, or traction control light illuminating.
- ✔ Communication error codes, particularly U-codes like U0140 (Lost Communication With Body Control Module).
- ✔ The engine cranks but refuses to start due to a security system fault.
A Straightforward Guide to Your BCM Installation
Installing your new BCM is a manageable job for a confident DIYer. Follow these general steps for a successful replacement. Remember, the BCM location varies (LH dash or center dash) depending on your model.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On most listed vehicles like the Traverse, Acadia, and Impala, the BCM is located under the driver’s side of the dashboard. On Express and Savana vans, it’s typically behind the center dash trim.
- Access the Module: You may need to remove a few plastic trim panels or the lower dash cover to gain clear access to the BCM.
- Disconnect and Remove: Carefully unplug the 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 BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical harnesses. Ensure they click into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, wipers, etc.—to confirm the repair.
Important Post-Installation Information
Because this GM Body Control Module is pre-programmed, most vehicles will be ready to go. However, in some cases, additional synchronization procedures may be needed:
- ✔ Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- ✔ Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure proper brake light and traction control operation.
- ✔ No Core Charge: You are not required to return your old module. You can keep it or dispose of it at your convenience.
Disclaimer: Vehicle systems vary. For procedures specific to your exact model, always consult a factory service manual or a qualified automotive technician.
Verified Compatibility for Your GM Vehicle
This module is a direct-fit replacement for part numbers 22915542 and 22820314 on a wide range of GM models. Please verify your vehicle is on this list:
- Acadia: 2013-2016, 2017 (Limited)
- Captiva Sport: 2013-2015
- CTS: 2014 (SW, V-Series Sedan), 2014-2015 (Coupe)
- Enclave: 2013-2017
- Express Van (1500, 2500, 3500): 2013-2018
- Impala: 2013, 2014-2016 (Limited)
- Savana Van (1500, 2500, 3500): 2013-2018
- Traverse: 2013-2017
Frequently Asked Questions
Do I need to program this BCM?
No. We program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you a trip to the dealer. You must provide your VIN at or after checkout.
What does a Body Control Module do?
The BCM is a computer that controls many of your vehicle’s non-engine related functions, such as power windows, locks, lights, wipers, security system, and instrument cluster gauges.
Is there a core charge for my old part?
No, there is no core charge. You can keep your original module.
What if my airbag light comes on after I install it?
This can happen occasionally. The new BCM needs to be synchronized with the airbag module (SDM). This requires a ‘Setup SDM Primary Key in BCM’ procedure, which must be done with a professional-grade diagnostic tool.
How do I give you my VIN?
After you complete your purchase, please send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your BCM without it.