If you’re dealing with erratic shifting, a transmission that feels stuck in gear, or a check engine light that points to a transmission fault, you’ve come to the right place. As a technician with over two decades of experience, I’ve seen firsthand how a failing Transmission Control Module (TCM) can bring a powerful truck like the GMC Sierra to a frustrating halt. This isn’t just an inconvenience; it’s a critical component failure that compromises your truck’s performance and reliability. This listing is for a direct-replacement TCM, part number 24289415, which arrives at your door pre-programmed with the latest official GM software, tailored specifically to your vehicle’s VIN.
You get to skip the expensive trip to the dealership and the hassle of scheduling a programming appointment. We handle the critical software flashing process for you. All you need to do is provide your VIN during checkout, and we’ll ensure this module is a perfect electronic match for your truck, restoring the precise, smooth shifting you expect from your GM vehicle. This is the definitive solution for getting your truck back to peak operational condition.
Case Study: A Tricky Diagnosis
A 2019 Sierra 1500 came into my shop with a complaint of harsh, delayed shifts, particularly from 2nd to 3rd gear, and an intermittent ‘Service Transmission’ message. The owner had already replaced a solenoid pack at another shop with no improvement. My scan tool pulled a U0101 (Lost Communication with TCM) and a P0700. Instead of just throwing more parts at it, I checked the TCM’s power and ground circuits—they were solid. The communication network lines were also fine. This pointed directly to an internal failure within the original TCM. After installing one of our VIN-programmed modules, the communication was instantly restored, all codes cleared, and the truck shifted flawlessly on the test drive. It’s a common scenario where the module itself is the root cause, not the mechanical components it controls.
Is Your Truck 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 2019-2020 Sierra 1500 TCM issues:
- ✔ Harsh or slamming shifts between gears.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ The transmission seems stuck in one gear (limp mode).
- ✔ Check Engine Light is on with transmission-related Diagnostic Trouble Codes (DTCs) such as P0700, U0101, P060B, or solenoid performance codes.
- ✔ ‘Service Transmission’ warning message on the driver information center.
- ✔ Inaccurate gear indicator on the dashboard.
A Straightforward Guide to Installation
Installing your new, pre-programmed TCM is a manageable task for a confident DIYer or any professional technician. The location on most compatible trucks is on the left-hand (driver’s side) core support. Always consult a service manual for your specific vehicle.
- 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 Old TCM: Find the module on the driver’s side core support, near the front of the engine bay.
- Disconnect Connectors: Carefully release the locking tabs on the electrical connectors and pull them straight out. Avoid pulling on the wires themselves.
- Remove the Module: Unbolt the old TCM from its mounting bracket. Keep the hardware as you will reuse it.
- Install the New TCM: Mount your new, VIN-programmed module onto the bracket and secure it with the original hardware.
- Reconnect Everything: Firmly plug in the electrical connectors 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 with varied shifting should confirm the repair was successful. No further programming is needed.
Verified Vehicle Compatibility
This module, service number 24289415, is a direct replacement for several part numbers, including 24042698, 24043411, 24043413, and 24296206. It is guaranteed to fit the following vehicles:
- ✔ 2022-2023 Chevrolet Camaro (underhood, LH frame rail)
- ✔ 2019 GMC Sierra 1500 Pickup (New Style, mirrors on door skin)
- ✔ 2020 GMC Sierra 1500 Pickup
- ✔ 2019-2020 GMC Sierra Denali 1500
- ✔ 2020-2022 GMC Sierra 2500/3500 Pickup & Denali
- ✔ 2019 Chevrolet Silverado 1500 Pickup (New Style, mirrors on door skin)
- ✔ 2020 Chevrolet Silverado 1500 Pickup
- ✔ 2020-2021 Chevrolet Silverado 2500/3500 Pickup
This professionally programmed 2019-2020 Sierra 1500 TCM is your most reliable path to resolving complex transmission issues and restoring your truck’s performance.
Do I need to do any programming after I receive this TCM?
Do I need to do any programming after I receive this TCM?
No. We flash the module with the latest GM software using the VIN you provide before we ship it. This makes the installation a direct replacement, with no additional programming or dealer visits required.
How do I provide my VIN?
Do I need to do any programming after I receive this TCM?
No. We flash the module with the latest GM software using the VIN you provide before we ship it. This makes the installation a direct replacement, with no additional programming or dealer visits required.
Is this part a genuine GM component?
Do I need to do any programming after I receive this TCM?
No. We flash the module with the latest GM software using the VIN you provide before we ship it. This makes the installation a direct replacement, with no additional programming or dealer visits required.
Will this fix my ‘Service Transmission’ light?
Do I need to do any programming after I receive this TCM?
No. We flash the module with the latest GM software using the VIN you provide before we ship it. This makes the installation a direct replacement, with no additional programming or dealer visits required.