Restore Flawless Shifting to Your GM Truck or Car
Are you dealing with the frustration of a transmission that won’t shift correctly, hesitates, or throws a check engine light? A faulty Transmission Control Module (TCM) is often the culprit, leaving your powerful truck or performance car feeling unreliable. This is the definitive, hassle-free solution. We provide a genuine GM Transmission Control Module, part number 24296206, that arrives at your door pre-programmed with the latest factory software specifically for your vehicle. Simply provide your Vehicle Identification Number (VIN) after purchase, and we handle the complex programming for you. This eliminates the need for an expensive trip to the dealership for calibration.
Case Study: A Tricky Diagnosis
A customer brought in a 2020 Silverado 2500 with a complaint that was driving him crazy: intermittent harsh downshifts, but only after towing for more than an hour. No consistent check engine light, just a stored generic P0700 (Transmission Control System Malfunction) code. We checked fluid levels and scanned for other codes, but everything looked clean. In my 20+ years of experience, heat-related electronic failures are common. We suspected the TCM was failing under the higher thermal load of towing. Instead of a costly diagnostic goose chase, we recommended this VIN-programmed module. The customer installed it himself in under 30 minutes. Two weeks later, he called back after a long haul—the truck shifted perfectly, just like it did when it was new. It’s a testament to how a precise, pre-programmed part can solve even the most elusive issues.
Is Your Vehicle Exhibiting These Symptoms?
A failing TCM can manifest in several ways. If you’re noticing any of the following, this module is the likely solution for your 2020-2021 Silverado 3500 TCM issues and other compatible models:
- ✔ Erratic or harsh shifting between gears
- ✔ Getting stuck in one gear (limp mode)
- ✔ Delayed engagement into Drive or Reverse
- ✔ Check Engine Light illuminated with transmission-related codes (e.g., P0700, U0100, U0101)
- ✔ “Service Transmission” message on the dashboard
- ✔ Poor fuel economy due to inefficient shifting
A Straightforward Guide to Installation
Installing your new 2020-2021 Silverado 3500 TCM is a manageable job for a DIY enthusiast or any professional technician. For most listed trucks, the module is located on the driver’s side (LH) core support, near the radiator.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the TCM: On most Silverado and Sierra models, you’ll find the TCM mounted to the left-hand (driver’s side) core support in the engine bay. On the Camaro, it’s located on the LH frame rail under the hood.
- Disconnect Connectors: Carefully release the locking tabs and unplug the electrical wiring harnesses from the old module. Inspect the connectors for any corrosion or damage.
- Remove the Old Module: Unbolt the old TCM from its mounting bracket. It’s typically held in place by a few small bolts.
- Install the New Module: Mount your new, pre-programmed TCM in the same location and secure it with the original bolts.
- Reconnect Everything: Plug the wiring harnesses back into the new module, ensuring they click securely into place. Reconnect the negative battery terminal.
- Final Steps: While the module is pre-programmed, some vehicles may benefit from a transmission adaptive pressure relearn procedure using a capable scan tool to ensure the smoothest possible shifting from the start. However, the vehicle will be fully operational without this step.
Guaranteed Fitment for Your GM Vehicle
This module is a direct replacement for multiple service numbers, including 24042698, 24043411, 24043413, 24289415, and 24296206. It is guaranteed to fit the following vehicles:
- CAMARO 2022-2023
- SIERRA 1500 PICKUP 2019 (New Body 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 Body Style), 2020
- SILVERADO 2500 PICKUP 2020-2021
- SILVERADO 3500 PICKUP 2020-2021
Frequently Asked Questions
Frequently Asked Questions
Do I need to program this module?
No. We pre-program the module to your vehicle’s specific VIN before shipping. It arrives ready for installation, saving you a trip to the dealer.
What information do you need from me?
After you place your order, you will need to provide us with your 17-digit Vehicle Identification Number (VIN). This ensures we load the correct software for your truck’s specific configuration.
Is this a new or used part?
This is a high-quality, genuine GM component that has been inspected and programmed with the latest software updates available from the manufacturer.
Will this fix my transmission problem for sure?
This part corrects issues directly caused by a faulty TCM. While it resolves the most common transmission electronic failures, you should ensure your vehicle has been properly diagnosed. This module will not fix internal mechanical transmission problems.
What is the main benefit of buying this part from you?
The primary benefit is convenience and cost savings. You receive a part that is programmed and ready to install, bypassing the expensive programming fees and scheduling hassles associated with a dealership visit.