Restore Flawless Shifting to Your GM Truck
Is your Sierra or Silverado suffering from erratic shifting, hesitation, or a frustrating “Service Transmission” light on the dash? These are classic signs of a failing Transmission Control Module (TCM). As the electronic brain of your transmission, its proper function is critical for performance, fuel economy, and drivability. When it fails, your powerful truck can feel unreliable and sluggish. This isn’t just an annoyance; it’s a problem that can leave you stranded. We offer a dependable, direct-fit solution with this VIN-programmed TCM, ensuring you get back on the road with confidence.
This isn’t a generic, one-size-fits-all part. We take your vehicle’s specific VIN and program this module with the very latest software updates directly from GM. This critical step ensures seamless communication with your truck’s other systems, like the Engine Control Module (ECM) and Body Control Module (BCM), eliminating the conflicts that can arise from unprogrammed parts. By ordering from us, you bypass the expensive and time-consuming trip to a dealership for programming. You receive a module that is truly ready for installation right out of the box.
A Technician’s Notebook: The Intermittent Ghost Code
A customer brought in a 2021 Silverado 2500 with a complaint that was driving him crazy. Every few days, the truck would slam into gear from a stop and throw a U0100 (Lost Communication With TCM) code, but then it would drive perfectly fine for another hundred miles. We checked wiring, connectors, and grounds—everything looked pristine. In my 20+ years of experience, intermittent electronic issues are the toughest to pin down. We suspected the TCM was failing internally, but only when it reached a specific operating temperature. We installed one of our VIN-programmed modules, and the customer called back a month later to say the truck hadn’t missed a beat. It’s a reminder that even without visible damage, the complex circuit boards inside these modules can and do fail.
Is Your Truck Showing These Symptoms?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution.
- ✔ Harsh, delayed, or erratic gear shifts
- ✔ Vehicle stuck in one gear (limp mode)
- ✔ “Service Transmission” or Check Engine Light illuminated
- ✔ Inaccurate gear indicator on the dashboard
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0751, or U0100
- ✔ Complete loss of communication with the TCM on a scan tool
A Straightforward Guide to Installation
Installing your new 2020-2022 Sierra 3500 TCM is a manageable job for a confident DIYer or any professional technician. The module is typically located on the driver’s side of the core support, near the radiator.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the TCM: On most late-model GM trucks, you’ll find the TCM mounted to the LH (driver’s side) core support or frame rail.
- Disconnect Wiring: Carefully release the locking tabs on the electrical connectors and pull them straight out. Do not force them. Inspect the connectors for any corrosion or damage.
- Remove the Module: Unbolt the mounting hardware holding the old TCM in place. It’s typically held by two or three small bolts.
- Install the New Module: Mount your new, pre-programmed TCM in the same location and secure it with the original hardware.
- Reconnect Everything: Plug the electrical connectors firmly into the new module until they click into place. Reconnect the negative battery terminal.
- Final Check: Start the vehicle and check for any warning lights. Take it for a test drive to confirm that shifting is smooth and correct. No further programming is required.
Guaranteed Fitment for Your GM Vehicle
This module, service part number 24289415, is a direct replacement for several original part numbers, including 24042698, 24043411, 24043413, and 24296206. It is verified to fit the following vehicles:
- CAMARO: 2022-2023
- SIERRA 1500 PICKUP: 2019 (New Style), 2020
- SIERRA 2500 PICKUP: 2020-2022
- SIERRA 3500 PICKUP: 2020-2022
- SIERRA DENALI 1500: 2019-2020
- SIERRA DENALI 2500: 2020-2022
- SIERRA DENALI 3500: 2020-2022
- SILVERADO 1500 PICKUP: 2019 (New Style), 2020
- SILVERADO 2500 PICKUP: 2020-2021
- SILVERADO 3500 PICKUP: 2020-2021
Frequently Asked Questions
Do I need to do any programming after I install this?
No. This module arrives at your door fully programmed to your truck’s VIN with the latest GM software. It is a true plug-and-play solution.
Where do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship the part until we have programmed it.
Will this fix a U0100 communication code?
Yes, in most cases. A U0100 code means the other modules in the vehicle cannot communicate with the TCM. If the wiring and connectors are intact, a faulty TCM is the most common cause, and this part is the correct fix.
Is this a new or used part?
This is a high-quality, inspected, and tested component that is guaranteed to function correctly. It is programmed with new, factory-authorized software.
What is the warranty on this TCM?
This part comes with our standard warranty, ensuring it is free from defects in function. Please see our warranty page for full details.