Restore Flawless Shifting to Your GM Truck or Car
If you’re dealing with erratic shifting, a ‘Service Transmission’ warning light, or your truck going into limp mode, the problem often points directly to a failing Transmission Control Module (TCM). As the electronic brain of your transmission, the TCM is responsible for every gear change. When it fails, it can make your powerful Silverado, Sierra, or even Camaro feel unpredictable and unreliable. In my 20+ years in diagnostics, I’ve seen how a faulty TCM can sideline an otherwise perfect vehicle, causing immense frustration for the owner.
This isn’t just a replacement part; it’s a complete solution. We offer a genuine GM Transmission Control Module, part number 24289415, that comes professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures the module has the latest factory software updates from GM and communicates perfectly with your truck’s other systems right out of the box. You get to bypass the expensive and time-consuming trip to the dealership for programming—we handle it for you before we ship.
Is Your Vehicle Showing These Symptoms?
- ✔ Harsh, delayed, or erratic gear shifts.
- ✔ Vehicle gets stuck in one gear (limp mode).
- ✔ “Service Transmission” or Check Engine Light is illuminated on the dash.
- ✔ Complete loss of communication with the transmission.
- ✔ Diagnostic Trouble Codes (DTCs) stored, such as U0101 (Lost Communication with TCM), P0700 (Transmission Control System Malfunction), or other transmission-specific codes.
- ✔ Inability to shift out of Park.
Case Study: The ‘Limp Mode’ Sierra
A customer brought in his 2020 Sierra 2500, a truck he relied on daily for his contracting business. It was stuck in 3rd gear, and the dash was lit up. The dealership had quoted him over a thousand dollars for a new TCM plus programming and labor. He was worried about the cost and the downtime. We diagnosed a confirmed internal TCM failure. Instead of the dealer route, we sourced this exact pre-programmed module. The installation took less than an hour in his own garage. The truck immediately started and shifted perfectly, clearing all codes. He saved hundreds of dollars and, more importantly, got his work truck back on the road the very next day. This is the value of a direct, pre-programmed solution.
Why a VIN-Programmed Module is the Smart Choice
Modern vehicles are complex networks of computers. Simply installing a blank TCM won’t work—it needs to be coded to your specific VIN and vehicle options. Our process eliminates that hurdle. By providing your VIN at checkout, you receive a 2020-2021 Silverado 2500 TCM that is truly plug-and-play. It’s loaded with the correct software to manage your transmission’s shift points, torque converter lockup, and line pressure, restoring the smooth, factory-new performance you expect.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental reconnection.
- ✔ Locate the TCM: On most Silverado and Sierra trucks, the TCM is mounted on the driver’s side (LH) core support, near the radiator. For the Camaro, it’s typically found on the driver’s side frame rail under the hood.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Note their orientation. Then, unbolt the module from its mounting bracket.
- ✔ Install the New Module: Bolt the new, pre-programmed TCM into place. Reconnect the electrical connectors, ensuring they click securely into place.
- ✔ Final Steps: Reconnect the negative battery terminal. Start the vehicle and check for any warning lights. A short drive with varied speeds will allow the system to confirm proper operation. No additional programming is required.
Verified Vehicle Compatibility
This module is a direct replacement for service numbers 24042698, 24043411, 24043413, 24289415, and 24296206, and fits the following models:
- ✔ 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 2500/3500: 2020-2022
- ✔ SILVERADO 1500 PICKUP: 2019 (New Style), 2020
- ✔ SILVERADO 2500 PICKUP: 2020-2021
- ✔ SILVERADO 3500 PICKUP: 2020-2021
Choosing this VIN-programmed 2020-2021 Silverado 2500 TCM is the most efficient and reliable way to solve your transmission problems and restore your vehicle’s performance and dependability.
Frequently Asked Questions
Why do you need my VIN?
Your VIN is essential for us to load the exact, correct GM factory software for your vehicle’s specific build, including engine, transmission type, and other options. This ensures the TCM works perfectly upon installation without needing a trip to the dealer.
Is this a difficult part to install myself?
For someone with basic mechanical skills, this is a very straightforward installation. It typically involves disconnecting the battery, unplugging a few connectors, and removing a few bolts. Since it’s pre-programmed, no special computer tools are needed.
Will this fix my ‘Service Transmission’ light?
If the warning light and shifting issues are caused by a faulty TCM, this part is the correct solution. After installation, any stored codes related to the old, faulty module should clear, and the light should go out.
What is the difference between a TCM and a PCM?
The TCM (Transmission Control Module) specifically controls transmission functions like shifting. The PCM (Powertrain Control Module) is the main computer that controls the engine and often communicates with the TCM. In many modern trucks, they are separate units.
Is there a warranty with this part?
Yes, all our electronic components come with a warranty against defects. Please see our warranty policy page for complete details and duration.