Restore Your Truckโs Core Electronics
Is your GMC Sierra Denali 3500 plagued by strange electrical problems? Flickering lights, unresponsive power windows, or an HVAC system with a mind of its own can be incredibly frustrating, undermining the reliability of your premium workhorse. These aren’t just minor annoyances; they are classic signs of a failing Body Control Module (BCM). This VIN-programmed GM BCM is the definitive solution, engineered to restore full functionality and confidence in your vehicle without a costly trip to the dealership for programming.
Common Symptoms & Your Solution
A faulty BCM is the central nervous system for your truck’s body electronics. When it fails, it can trigger a cascade of issues. If you’re experiencing any of the following, this module is the fix you need:
- Intermittent or complete loss of climate control (HVAC) functions.
- Power windows, door locks, or exterior/interior lights that work sporadically or not at all.
- An active airbag warning light, often accompanied by DTC B1001.
- Erratic security system behavior, causing starting issues or unexpected alarms.
- A variety of diagnostic trouble codes (DTCs) related to body systems and communication errors.
This pre-programmed 2013 Sierra Denali 3500 Body Control Module arrives ready for installation, precisely matched to your vehicle’s specific configuration to ensure every feature operates exactly as it did from the factory.
Features & Benefits
- โ Plug & Play Installation: We program the module to your truck’s VIN before shipping. This eliminates the need for expensive dealership programming tools, saving you time and money.
- โ Complete System Restoration: Regain full, reliable control over critical functions including lighting, power accessories, climate control, and vehicle security systems.
- โ OEM-Standard Quality: Built to meet or exceed original equipment specifications, ensuring dependable performance and long-term durability for your hard-working truck.
- โ Broad Compatibility: This unit is a direct replacement for multiple part numbers, including 25971917, 25835966, 20939137, and 22860591, making it a versatile solution for many GM trucks and SUVs.
- โ No Core Charge: You are not required to return your old, faulty module. This simplifies the process and gets your vehicle back on the road faster.
- โ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight from the Garage
As a technician, I’ve seen countless BCM-related issues on these GMT900 platform trucks. Before you replace the module, do a quick visual inspection of the ground connection point located on the driver’s side A-pillar, near the emergency brake pedal. A loose or corroded ground can cause identical symptoms to a failing BCM. Ensuring this ground is clean and tight is a crucial five-minute check that can save you a headache. If the ground is solid and the problems persist, replacing the 2013 Sierra Denali 3500 Body Control Module is the confident next step to a permanent repair.
Frequently Asked Questions
What does “VIN Programmed” actually mean?
It means we load your vehicle’s specific Vehicle Identification Number (VIN) and its corresponding factory settings onto the module before we ship it. This ensures the BCM recognizes all the specific options your truck has (like power seats, sunroof, specific lighting, etc.) and works correctly right out of the box, just like the original part.
Is this a difficult part to install myself?
The physical installation is very straightforward for most DIYers. The BCM is typically located under the driver’s side dashboard, near the steering column, and can be swapped out in under 5 minutes with basic tools. The most critical part is ensuring you order a pre-programmed unit like this one to avoid post-installation software work.
My airbag light is on. Will this module fix it?
This module can resolve airbag light issues caused by BCM failure (like DTC B1001). However, after installation, some vehicles may require a ‘Setup SDM Primary Key in BCM’ procedure using a professional-grade scan tool to sync the new BCM with the airbag system and clear the light. This is a common security handshake procedure on GM vehicles.
Do I need to return my old BCM?
No. We do not require you to send back your original part. There is no core charge associated with this purchase, making the process simpler and more convenient for you.
How can I be sure this is the right part for my truck?
This module is a direct replacement for part number 25971917 and many others listed in the description. The best way to confirm fitment is to match the part number from your original BCM. This specific 2013 Sierra Denali 3500 Body Control Module is designed for your vehicle, but checking the number on your old part is always the most certain method.