Restore Peak Performance to Your Sierra Denali
A truck as capable as your Sierra Denali 3500 demands a transmission that shifts with precision and authority. When the Transmission Control Module (TCM) fails, it can bring your work, towing, and daily driving to a frustrating halt. This isn’t just a replacement part; it’s a complete, pre-programmed solution designed to restore your truck’s factory performance and get you back on the road with confidence. We professionally flash this genuine GM TCM (service no. 24289415) with the latest official software, precisely matched to your vehicle’s VIN, ensuring a seamless and correct installation.
Common Symptoms & Your Definitive Solution
If you’re experiencing issues like harsh or delayed shifting, getting stuck in gear, a lit Check Engine Light with transmission-related codes (like U0101 for lost communication), or a complete failure to shift, a faulty TCM is the most likely culprit. This module is the definitive fix, engineered to resolve these problems and restore the crisp, reliable shifting you expect from your heavy-duty truck. By purchasing a pre-programmed 2020-2022 Sierra Denali 3500 TCM from us, you bypass the need for expensive dealership visits for programming.
- ✔ VIN-Programmed for Your Truck: We flash the module with your vehicle’s specific VIN, ensuring it is ready for a true plug-and-play installation with no additional programming required.
- ✔ Loaded with Latest GM Software: Your TCM arrives with the most current software updates from General Motors, promoting optimal transmission performance, fuel efficiency, and longevity.
- ✔ Direct-Fit Solution: This is a direct replacement for a range of service numbers including 24042698, 24043411, 24043413, 24289415, and 24296206, guaranteeing perfect fitment and function.
- ✔ Eliminate Transmission Faults: Put an end to confusing error codes, limp mode, and unpredictable gear changes for a smoother, safer driving experience.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
An Expert’s Note on Modern Truck Repair: In today’s highly sophisticated trucks, the TCM is the absolute brain of the transmission. It’s not a one-size-fits-all component. We’ve seen countless cases where an unprogrammed or incorrectly programmed module causes more problems than it solves, leading to communication errors and even damage. By programming this 2020-2022 Sierra Denali 3500 TCM specifically to your truck’s VIN before it ships, we ensure all related systems—from the engine to the transfer case—communicate flawlessly from the moment you install it. This is the professional way to get your heavy-duty truck back to work.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
Absolutely not. The main benefit of our service is that we program the module to your vehicle’s VIN before we ship it. This means it’s ready to be installed right out of the box, saving you time and the high cost of dealership programming.
How do I provide my Vehicle Identification Number (VIN)?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or reply to your order confirmation email. We cannot ship your part until we receive your VIN.
Is this a brand new part?
This is a fully tested, genuine GM module that has been meticulously inspected and programmed to ensure it meets or exceeds original factory performance specifications. It is ready to provide long-lasting, reliable service for your 2020-2022 Sierra Denali 3500 TCM needs.
My original part number is different. Will this still work?
Yes. This module, service number 24289415, is the correct, updated replacement for several older part numbers, including 24042698, 24043411, 24043413, and 24296206. As long as your vehicle is listed in the compatibility chart, this part will work perfectly.
How long does programming take before you ship?
Programming is typically completed within one business day of receiving your VIN. We pride ourselves on getting your truck back on the road as quickly as possible.
What is the warranty on this part?
This unit is backed by our one-year replacement warranty. Please see our warranty page for full details and conditions.