Restore Full Control Over Your Truck’s Electronics
Are you battling a storm of electrical problems in your GM truck or SUV? One moment the A/C works, the next it’s dead. Power windows have a mind of their own, and a persistent airbag light is staring you down. These aren’t separate issues; they’re classic signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can make your reliable workhorse feel unpredictable. This module, part number 25844480, is the definitive solution, offered with a professional cloning service that makes installation a breeze.
Unlike basic programming, our cloning service transfers the exact data from your original module to this replacement unit. This means all your vehicle-specific settings, security information, and operational parameters are perfectly mirrored. The result is a true plug-and-play component that eliminates the need for expensive dealership visits for programming or complex relearn procedures. Get your 2013 Silverado 3500 Body Control Module back to factory-fresh operation and put an end to the electrical guesswork.
Case Study: A Tricky Diagnosis
I had a 2011 Sierra 2500 in the bay last month with a textbook case of BCM failure—intermittent wipers, flickering dash lights, and a no-start condition when the security light was on. The customer had already replaced the BCM with a junkyard part, but the problems persisted. After confirming the new BCM was good, I went back to basics. On these GMT900 platforms, the ground connection for the BCM (usually a black wire bolted to the metal dash support near the module) is a common failure point. A bit of corrosion was causing high resistance. After cleaning the ground point and re-securing it, both the old and new BCMs worked perfectly. It’s a 5-minute check that has saved me and my customers hours of frustration. Always check your grounds during the swap!
Is Your Truck Showing These Symptoms?
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ HVAC controls are unresponsive, or the blower motor works intermittently.
- ✔ The airbag warning light is illuminated, often with a DTC B1001 (Setup SDM Primary Key in BCM).
- ✔ Strange security system behavior, including random alarm activation or no-start conditions.
- ✔ Headlights, taillights, or interior dome lights failing to function correctly.
- ✔ Diagnostic scanner shows multiple communication codes (U-codes) or body-related DTCs.
Your 5-Minute Path to a Perfect Fix
Installing your replacement 2013 Silverado 3500 Body Control Module is a straightforward process for any DIYer or professional. Since we clone your original module’s data, no special tools are needed for programming.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most compatible models, the BCM is found under the driver’s side dashboard, to the left of the steering column. It’s a black box with several large multi-pin connectors.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unclip or unbolt the module from its mounting bracket.
- Install the New Module: Seat the replacement BCM into the mounting bracket and securely plug in all the electrical connectors. You’ll hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘ON’ position and test all functions: windows, locks, lights, wipers, and HVAC system.
- Post-Installation Checks: In some cases, an ‘Airbag System Sync’ or ‘Brake Pedal Position Relearn’ may be needed if related warning lights appear. This requires a professional scan tool and is detailed in our included instructions.
Will This Fit My Truck or SUV?
This BCM is a direct-fit replacement for a wide range of General Motors vehicles from 2007-2013. It is interchangeable with part numbers 25835966, 15263363, 15263497, 15878753, 15284816, 15943678, 15926094, 15940214, 25790508, 25790509, 25823558, 25823559, 25835965, 25844479, 25971916, 25971917, 15901388, 20939137, 20939138, and 22860591. Please verify compatibility with your specific model below:
- Chevrolet Avalanche (2007-2011)
- Chevrolet Silverado 1500 (2007-2011)
- Chevrolet Silverado 2500/3500 (2007-2013)
- Chevrolet Suburban 1500/2500 (2007-2011)
- Chevrolet Tahoe (2007-2011)
- GMC Sierra 1500 (2007-2011)
- GMC Sierra 2500/3500 (2007-2013)
- GMC Sierra Denali (2007-2013)
- GMC Yukon & Yukon XL (2007-2011)
- Cadillac Escalade, ESV, EXT (2007-2011)
Note: For 2007 models, this fits the ‘new style’ with the smooth door skin. If you have any fitment questions, our expert team is here to help.
Frequently Asked Questions
Frequently Asked Questions
What is a ‘Cloning Service’ and how is it different from programming?
Cloning is a precise 1-to-1 data transfer from your old BCM to the new one. This copies everything, including security codes and vehicle-specific options, making it a true plug-and-play solution. Standard programming just loads factory software, which often requires additional steps at a dealership to sync with your vehicle.
Do I need to send my original BCM to you?
Yes. For the cloning service, we need your original module to read the data. We perform the service and ship both your original module and the ready-to-install replacement back to you.
Is there a core charge for this part?
No, there is no core charge. We always return your original module to you along with the replacement unit, so you don’t have to worry about extra fees or returns.
My airbag light is on. Will this fix it?
A faulty BCM is a common cause for an airbag light, especially with code B1001. Replacing it often solves the problem. However, if the light stays on after installation, you may need to perform the ‘Setup SDM Primary Key in BCM’ procedure with a professional scan tool to sync the security systems.
What if my original module is completely dead or missing?
If your module is non-communicative or lost, we cannot perform the cloning service. In that case, we can provide a VIN-programmed module. Please contact us directly to discuss this option before ordering.