Restore Safe Towing with a VIN-Programmed Brake Control Module
Seeing a persistent “Service Trailer Brake System” message on your dash? A faulty Trailer Brake Control Module (TBCM) can put a stop to your towing plans and, more importantly, compromise your safety on the road. This isn’t just an annoyance; it’s a critical safety component that needs to work flawlessly every time you hook up. This module is the definitive, hassle-free solution to get your 2007-2009 Silverado or Sierra back to towing safely and reliably.
Common Symptoms & Your Direct-Fit Solution
If you’re experiencing issues like the trailer brakes not engaging, intermittent connection warnings, or seeing diagnostic trouble codes (DTCs) like C0265, C0266, or U0100, a failing TBCM is the most likely culprit. Our module is designed to be the direct fix. The best part? We pre-program it to your truck’s specific VIN before it leaves our facility. This eliminates the need for an expensive and time-consuming trip to the dealership for programming, making this a true plug-and-play repair you can perform yourself. When you need a reliable programmed Silverado Sierra trailer brake module, this is your answer.
- โ Ready for Immediate Installation: We program this module to your truck’s specific VIN before shipping. This means no trip to the dealership for flashingโit’s a genuine plug-and-play solution.
- โ Updated for Peak Performance: Your module arrives with the latest stable software updates from GM, ensuring optimal communication with your truck’s other systems and reliable braking performance.
- โ Guaranteed Compatibility: This module is a direct replacement for part numbers 20850923, 25854535, 25788981, and 25907533, ensuring a perfect fit and function for your 2007-2009 GM truck.
- โ Restore Towing Confidence: Eliminate dangerous braking errors and warning lights. Get back the peace of mind that comes from knowing your trailer brakes will respond exactly when you need them to.
- โ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
From the Shop Floor: Over our 20+ years of hands-on diagnostics, we’ve seen countless TBCM swaps. The number one mistake owners make is installing a non-programmed unit from a salvage yard or online seller. The module simply won’t communicate with the Body Control Module (BCM) and Electronic Brake Control Module (EBCM), leaving you with the same warning light and, critically, no trailer brakes. By providing a programmed Silverado Sierra trailer brake module matched to your VIN, we’re doing the dealership’s job for you, saving you hundreds in labor and diagnostic fees.
Don’t risk your safety or your cargo with a malfunctioning brake controller. This is the simple, effective, and reliable way to solve your trailer brake system issues and get back to work. Installing this programmed Silverado Sierra trailer brake module is the smart repair that ensures your truck is ready for any job.
Frequently Asked Questions
Do I need to go to the dealer after installing this?
Absolutely not. The main benefit of our service is that we program the module to your specific VIN before we ship it. This makes it a true plug-and-play part, saving you the time and expense of a dealership visit for programming.
Where is this module located on my truck?
The Trailer Brake Control Module is typically located on the driver’s side frame rail, towards the rear of the vehicle (LH rear frame). It’s usually accessible after safely raising and supporting the truck.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can add it as a note to your order or reply to your order confirmation email. We cannot ship the part until we have programmed it.
Will this fix the ‘Service Trailer Brake System’ message?
Yes, in the vast majority of cases, a faulty TBCM is the direct cause of this warning message on 2007-2009 GM trucks. This module is the specific solution designed to clear that warning and restore full system functionality.
Is this compatible with part number 25854535?
Yes. This module is a direct, compatible replacement for several part numbers, including 20850923, 25854535, 25788981, and 25907533. It will function identically to the original part.