Restore Crisp, Reliable Shifting to Your GM Vehicle
Is your late-model GM truck or Camaro suffering from erratic shifting, delayed engagement, or a persistent “Service Transmission” light on the dash? These are classic signs of a failing Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty TCM can sideline an otherwise perfectly good vehicle. This isn’t just an annoyance; it’s a critical failure that can affect drivability and safety. You need a solution that is both reliable and straightforward. This genuine GM Programmed GM TCM, part number 24296206, is the definitive fix, arriving at your door ready for installation.
The biggest hurdle with modern electronic components is the programming. In the past, replacing a TCM meant a trip to the dealership for expensive software flashing. We eliminate that step entirely. Before we ship your module, we use your vehicle’s VIN to load the latest, most stable GM factory software directly onto it. This ensures seamless communication with your engine computer (ECM), anti-lock brake module (ABS), and other systems, restoring the precise shifting logic your vehicle was designed with. This isn’t just a replacement part; it’s a fully integrated solution designed to get you back on the road with confidence.
A Technician’s Notebook: The Intermittent Fault
A customer brought in his 2020 Sierra 2500 with a frustrating problem: intermittent harsh downshifts, but only after it was fully warmed up. No check engine light, no stored codes at first. We checked fluid levels and quality—perfect. We monitored live data, and everything looked normal during our initial test drives. The issue was so sporadic it was nearly impossible to replicate on demand. After a few days, it finally threw a U0101 (Lost Communication with TCM) code. The culprit was the TCM itself, developing an internal fault under thermal stress. We installed a new, VIN-Programmed GM TCM, and the truck has been shifting flawlessly for the owner ever since. These intermittent issues are often the first sign of TCM failure.
Is Your Vehicle Showing These Symptoms?
- ✔ Harsh, clunky, or erratic shifting between gears.
- ✔ The transmission gets stuck in one gear (often called “limp mode”).
- ✔ A delay when shifting from Park into Drive or Reverse.
- ✔ Illumination of the Check Engine Light or “Service Transmission” warning.
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as P0700 (Transmission Control System Malfunction) or U0101 (Lost Communication With TCM).
- ✔ Complete loss of transmission function.
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 listed Sierra and Silverado models, the TCM is mounted on the driver’s side (LH) core support near the front of the engine bay. On the Camaro, it’s located on the driver’s side (LH) frame rail under the hood.
- ✔ Disconnect Connectors: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Do not force them. Inspect the connectors for any corrosion or damage.
- ✔ Unbolt the Old Module: Remove the mounting bolts or nuts holding the old TCM in place. Set the old module aside.
- ✔ 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 back into the new TCM until they click into place. Reconnect the negative battery terminal.
- ✔ Final Check: Start the vehicle and check for any warning lights. A short test drive will confirm that shifting performance has been restored. No further programming is required.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the following vehicles. We cross-reference your VIN to ensure 100% correct software and compatibility.
- Chevrolet Camaro: 2022-2023
- Chevrolet Silverado 1500 Pickup: 2019 (New Body Style), 2020
- Chevrolet Silverado 2500/3500 Pickup: 2020-2021
- GMC Sierra 1500 Pickup: 2019 (New Body Style), 2020
- GMC Sierra 2500/3500 Pickup: 2020-2022
- GMC Sierra Denali 1500: 2019-2020
- GMC Sierra Denali 2500/3500: 2020-2022
This part is also a direct replacement for the following service part numbers: 24042698, 24043411, 24043413, and 24289415.
Frequently Asked Questions
How do I provide my VIN for programming?
After completing your purchase, please send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we receive this information, as the programming is specific to your vehicle.
Is any additional programming needed after installation?
No. This is the primary benefit of our service. The Programmed GM TCM arrives ready to install. Once you plug it in, your vehicle will recognize it, and no trip to the dealership is necessary.
Will this fix my specific transmission problem?
This module corrects issues directly caused by a faulty TCM, such as those listed in the symptoms section (erratic shifts, communication codes, etc.). It is essential to properly diagnose your vehicle, as other mechanical or sensor issues can sometimes cause similar symptoms.
Where is my VIN located?
You can find your VIN on your vehicle’s registration, your insurance card, or on the vehicle itself. It is typically located on a small plate on the driver’s side of the dashboard (visible through the windshield) or on the driver’s side door jamb sticker.
Is this a new or used part?
We supply high-quality, fully tested genuine GM components that are guaranteed to perform to factory specifications. Each module is programmed with the latest software available from GM for your specific VIN.