Restore Your Truck’s Brain and End Electrical Headaches
Is your GM truck or SUV acting possessed? One minute the power locks don’t work, the next the radio is dead, and then it won’t even start. These frustrating, random electrical gremlins are classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it goes bad, it can cause chaos. This isn’t just an inconvenience; it can leave you stranded. Stop throwing parts at the problem and get the definitive solution. This replacement BCM arrives programmed to your vehicle’s specific VIN, ensuring a seamless installation and restoring all functions to factory-perfect operation.
Case Study: A Tricky Diagnosis
I remember a 2013 Silverado 2500 that came into my shop. The owner was at his wit’s end. His dashboard would light up like a Christmas tree intermittently, the power windows had a mind of their own, and twice it had refused to start, only to fire right up an hour later. He’d already replaced the battery and checked the alternator. After hooking up my scan tool, I saw a slew of communication error codes (U-codes) pointing to a network issue. The culprit? A failing BCM. Instead of a costly trip to the dealer for a new module and programming, we ordered one of these VIN-programmed units. The install took less than an hour, and once we performed the quick Brake Pedal Position Relearn, the truck was back to 100%. The customer saved hundreds and got his reliable workhorse back on the road the same day.
Common Signs of a Failing BCM
If you’re experiencing any of the following, a faulty Body Control Module is the likely cause. Replacing your 2012-2014 Sierra 2500 BCM can resolve these issues:
- ✔ Erratic or non-functional power windows, door locks, and interior lights.
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ Wipers or horn activating unexpectedly or not working at all.
- ✔ Dashboard warning lights appearing and disappearing without reason.
- ✔ Communication error codes stored, such as U0140, U0155, or U0164.
- ✔ Complete loss of power to various accessories.
A Straightforward Guide to Installation
This module is designed for a direct-fit replacement. While professional installation is always an option, a confident DIYer can handle this job. The BCM is typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Access the Module: Remove any lower dash panels or trim necessary to gain clear access to the old BCM.
- Disconnect and Remove: Carefully unplug the electrical connectors from the module. They have locking tabs, so be gentle. Once disconnected, unbolt or unclip the old BCM and remove it from the vehicle.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Test: Reinstall any trim panels you removed, then reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions—windows, locks, lights, radio, etc.
- Perform Relearn Procedures (If Needed): As noted below, some vehicles may require a Brake Pedal Position Relearn or an Airbag System Sync. These are simple procedures that may be required to clear certain warning lights and ensure full system functionality.
Important Post-Installation Information
Because this module is pre-programmed, most of the hard work is done. However, depending on your specific vehicle, one or two final steps might be needed:
- ✔ Airbag System Sync: If your airbag warning light is on after installation, a professional scan tool is needed 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 this recalibration to ensure brake lights and stability control systems operate correctly. This can often be done with a high-end scan tool.
Disclaimer: Always consult your vehicle’s factory service manual for detailed instructions and specifications.
Will This Fit My Truck or SUV?
This BCM is a direct replacement for part numbers 22737275, 22846365, and 22846364. It is guaranteed to fit the following GM models:
ESCALADE & ESV (2012-2014)
ESCALADE EXT (2012-2013)
SIERRA 1500 & DENALI 1500 (2012-2013)
SIERRA 2500 & DENALI 2500 (2012-2014)
SIERRA 3500 & DENALI 3500 (2012-2014)
SILVERADO 1500 (2012-2013)
SILVERADO 2500 (2012-2014)
SILVERADO 3500 (2012-2014)
SUBURBAN 1500 (2012-2014)
SUBURBAN 2500 (2012-2013)
TAHOE (2012-2014)
YUKON & YUKON XL 1500 (2012-2014)
YUKON XL 2500 (2012-2013)
Frequently Asked Questions
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and vehicle-specific options from GM. This ensures it works correctly right out of the box, saving you a trip to the dealership for expensive programming.
Is this a plug-and-play part?
Yes, for the most part. Because we pre-program it, it will connect and restore function immediately. However, as with any BCM replacement, some vehicles may require minor post-install relearn procedures for the brake pedal sensor or airbag system, which can be done with a professional scan tool.
Where is the 2012-2014 Sierra 2500 BCM located?
The Body Control Module on these GM trucks and SUVs is consistently located under the driver’s side dashboard, typically mounted to a bracket near the steering column.
Do I have to return my old BCM?
No. There is absolutely no core charge for this part. You can keep your old module.
What happens if the airbag light is on after I install it?
This is a known possibility. It simply means the new BCM needs to be electronically ‘introduced’ to the airbag system’s computer (SDM). A repair shop with a capable scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to turn off the light.