If you’re dealing with the frustration of a problematic transmission in your GM truck—erratic shifting, getting stuck in gear, or a persistent check engine light—you know how quickly it can ruin your driving experience. A faulty Transmission Control Module (TCM) is often the culprit, acting as the brain for your transmission. This isn’t just an inconvenience; it’s a critical failure that can affect your truck’s performance and safety. We offer a reliable, straightforward solution: a genuine GM Transmission Control Module, part number 24289415, delivered to your door fully programmed for your specific vehicle.
Forget about expensive dealership visits and the hassle of scheduling programming appointments. The real value here is in our professional, in-house programming service. Before we ship your part, we flash it with the latest official GM software updates using the Vehicle Identification Number (VIN) you provide. This ensures that when your new 2019-2020 Silverado 1500 TCM arrives, it’s a true plug-and-play component, ready to restore your transmission’s precise, smooth operation. It’s the same quality fix you’d get from a professional shop, but on your terms and your schedule.
Case Study: A Tricky Diagnosis
Just last month, a 2019 Sierra 1500 was brought into a partner shop with a classic complaint: intermittent harsh downshifts and a U0100 ‘Lost Communication with TCM’ code that would come and go. The owner had already replaced a speed sensor with no luck. After checking the wiring harness for integrity, we suspected the TCM itself was failing internally, likely due to heat cycles. Instead of a costly diagnostic path, we recommended this VIN-programmed module. The customer installed it in his driveway in under an hour. The codes vanished, the shifting returned to normal, and he saved hundreds compared to a dealership repair. It’s a testament to how a precise, pre-programmed part can be the most efficient solution.
Is Your Truck Exhibiting These Telltale Signs?
A failing TCM can manifest in several ways. If you’re noticing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Harsh or delayed shifting between gears
- ✔ The vehicle feels like it’s stuck in one gear (limp mode)
- ✔ Inaccurate gear indicator on the dashboard
- ✔ Check Engine Light is on with transmission-related codes
- ✔ Common Diagnostic Trouble Codes (DTCs) include P0700, P0751, P0756, or U0100
- ✔ Poor fuel economy due to inefficient shifting
A Straightforward Guide to TCM Installation
Installing your new 2019-2020 Silverado 1500 TCM is a manageable job for a confident DIYer. On most compatible trucks, the module is located on the driver’s side (LH) core support behind the headlight. Always consult a service manual for your specific model, but here is a general guide:
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the Module: Find the TCM, typically mounted to the left-hand core support in the engine bay. You may need to remove a plastic cover or the air intake box for access.
- Disconnect Connectors: Carefully release the locking tabs on the electrical wiring harnesses and unplug them from the old module. Inspect the connectors for any corrosion or damage.
- Remove Old TCM: Unbolt the mounting hardware holding the TCM in place. There are usually two or three bolts. Set the old module aside.
- Install New TCM: Mount your new, pre-programmed TCM in the same location and secure it with the original hardware. Do not overtighten the bolts.
- Reconnect and Finalize: Plug the wiring harnesses back into the new module, ensuring they click securely into place. Reconnect the negative battery terminal. It may be necessary to perform a transmission service fast learn procedure with a capable scan tool, though many vehicles will adapt on their own over several drive cycles.
Verified Vehicle Compatibility List
This module, part number 24289415, is a direct replacement for service numbers 24042698, 24043411, 24043413, 24296206. It is guaranteed to fit the following vehicles:
- Chevrolet Camaro: 2022-2023
- Chevrolet Silverado 1500: 2019 (New Body Style), 2020
- Chevrolet Silverado 2500/3500: 2020-2021
- GMC Sierra 1500: 2019 (New Body Style), 2020
- GMC Sierra 2500/3500: 2020-2022
- GMC Sierra Denali 1500: 2019-2020
- GMC Sierra Denali 2500/3500: 2020-2022
CRITICAL: After your purchase, you must send us your vehicle’s 17-digit VIN to ensure we can program the module correctly before shipment. This step is essential for a successful installation.
Frequently Asked Questions
Do I need to take this part to the dealer for programming?
No. We handle all the programming for you before we ship the item. Simply provide your VIN during checkout, and the module will arrive ready to install, saving you time and money.
Where is the TCM located on my 2019 Silverado?
On the 2019-2020 Silverado and Sierra 1500, the Transmission Control Module is typically mounted to the vehicle’s frame on the driver’s side (LH) core support, near the front of the engine bay.
What happens if I don’t provide my VIN?
Providing your VIN is mandatory for this part. We cannot program or ship the module without it, as the software is specific to your truck’s factory configuration. This ensures proper communication with other vehicle systems.
Will this fix my truck’s hard shifting problem?
If the hard shifting is caused by a faulty TCM, then yes, this part is the correct solution. A failing TCM is one of the most common causes of erratic shifting, slipping, and other transmission performance issues.
Is this a genuine GM part?
Yes, this is a genuine GM part (service number 24289415) flashed with the latest official GM software. It is the same high-quality component you would receive from a dealership.