Restore Safe Towing and Clear That Annoying Warning Light
Seeing the “Service Trailer Brake System” message on your dash is more than just an annoyanceโit’s a critical safety warning. When you’re hauling heavy equipment, a camper, or a trailer full of materials, you need absolute confidence in your braking system. This VIN-programmed Trailer Brake Control Module (TBCM) is the definitive, no-hassle solution to restore full function and peace of mind to your 2007-2009 GM truck’s towing system.
Common Symptoms & Your Solution
If your truck is experiencing any of the following issues, a failing TBCM is the most likely culprit. This module is designed to be the direct fix for:
- The persistent “Service Trailer Brake System” message on the Driver Information Center (DIC).
- Trailer brakes that don’t engage or work intermittently.
- Diagnostic Trouble Codes (DTCs) such as C0265, C0266, or U0100 related to the TBCM.
- A complete lack of output from the manual trailer brake controller slider.
Don’t let a faulty module compromise your safety. Installing our pre-programmed Silverado 2500 trailer brake control module is the most efficient way to get your truck back to work, ensuring your trailer brakes respond exactly when you need them to.
Features & Benefits
- โ Plug-and-Play Installation: This module is pre-programmed to your truckโs specific Vehicle Identification Number (VIN). It arrives ready to install, with no expensive trip to the dealership required for programming.
- โ Updated GM Software: We flash each unit with the newest, most stable software updates from GM, ensuring optimal performance and communication with your truck’s other electronic systems.
- โ Restored Safety and Control: Regain the full, proportional braking power your integrated trailer brake system was designed to provide. Tow heavy loads with the confidence that you have complete control.
- โ Guaranteed Fitment: Designed as a direct replacement for part numbers 25907533, 20850923, 25854535, and 25788981, this module mounts in the factory location on the LH rear frame rail.
- โ This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN-Programming is Non-Negotiable
As a technician, I’ve seen countless truck owners buy a used TBCM from a salvage yard, only to find it doesn’t work. That’s because these modules are electronically tied to the original vehicle’s VIN and option package. They are not interchangeable. Our process completely eliminates this problem. By programming the module to your VIN before it ships, we ensure it communicates seamlessly with your truck’s Body Control Module (BCM) and Engine Control Module (ECM) right out of the box. This saves you time, money, and the immense frustration of a failed repair.
Getting your truck back to 100% is simple. After purchase, just provide us with your VIN, and we’ll handle the complex programming. We’ll then ship you a fully updated, ready-to-install Silverado 2500 trailer brake control module that solves your problem correctly the first time. This is the professional-grade solution for the serious truck owner.
Frequently Asked Questions
Why do I need to provide my VIN?
Your truck’s Vehicle Identification Number (VIN) is required so we can program the module specifically for your vehicle’s options and software configuration. This step ensures the part works perfectly upon installation without needing a trip to the dealer.
Is this part difficult to install?
No, for someone with basic mechanical skills, it’s a straightforward job. The module is located on the driver’s side frame rail, near the rear axle. It typically involves disconnecting the electrical connector and removing a few bolts. Since our part is pre-programmed, the electronic side of the repair is already done for you.
Will this clear the ‘Service Trailer Brake System’ message on my dash?
Yes, in the vast majority of cases, a failed TBCM is the root cause of this warning. Replacing your old, faulty unit with this new programmed module will resolve the issue and extinguish the warning light.
My truck is a GMC Sierra 3500. Will this part fit?
Yes, this module is compatible with a range of GM trucks from 2007-2009, including the Silverado 2500/3500, Sierra 2500/3500, and even some 1500 and Denali models. Please check the fitment list in the description to confirm your specific vehicle.
What happens if I forget to send my VIN after ordering?
We cannot ship your order without a VIN. Our team will reach out to you via email to request the information. To ensure the fastest possible delivery, please provide your VIN during checkout or immediately after placing your order.
How does the one-year replacement warranty work?
If the module fails within one year of the purchase date, we will provide a direct replacement. Simply contact our customer service team to initiate the process. The warranty covers the part itself.