Restore Flawless Shifting in Your GM Truck or Car
Is your 2015-2016 Silverado 1500 or other GM vehicle suffering from harsh shifts, delayed gear engagement, or a persistent Check Engine Light? You’re not just dealing with an annoyance; you’re experiencing the classic signs of a failing Transmission Control Module (TCM). As the electronic brain of your transmission, the TCM dictates every shift. When it falters, drivability and reliability suffer. This isn’t just about comfort—erratic transmission behavior can be a serious safety concern.
This replacement Transmission Control Module, part number 24276411, is the definitive solution. We take the guesswork and high cost out of the repair by pre-programming the module to your vehicle’s exact Vehicle Identification Number (VIN) before it ships. This means it arrives at your door loaded with the latest GM factory software, ready for a straightforward installation. You get a reliable fix that restores the smooth, predictable performance you expect from your vehicle, without the expensive trip to a dealership for programming.
Case Study: A Tricky Diagnosis
A customer brought in a 2016 Sierra 1500 with the 8-speed transmission. The complaint was a jarringly hard shift from 1st to 2nd gear, but only after it warmed up. No specific gear ratio codes were stored, just a generic P0700 (Transmission Control System Malfunction) and a U0101 (Lost Communication with TCM) that would pop up intermittently. After verifying the fluid level and condition were perfect, we monitored the TCM data stream. We saw erratic line pressure commands that didn’t match the driving conditions. This pointed directly to an internal TCM processor fault. Swapping in a VIN-programmed module like this one resolved the hard shift and cleared all codes. The customer was back on the road the same day, having avoided a costly diagnostic rabbit hole at the dealer.
Is Your Vehicle Showing These Symptoms?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Harsh, slamming, or erratic shifting between gears.
- ✔ The transmission gets stuck in one gear (often called “limp mode”).
- ✔ Delayed or hesitant engagement when shifting into Drive or Reverse.
- ✔ A lit Check Engine Light with transmission-related Diagnostic Trouble Codes (DTCs) such as P0700, P0751, P0756, or U0101.
- ✔ Poor fuel economy due to inefficient shifting.
- ✔ The gear indicator on your dashboard may display incorrectly or not at all.
A Straightforward Guide to Installation
Installing your new, pre-programmed 2015-2016 Silverado TCM is a manageable job for a DIY enthusiast or any professional technician. Since the programming is already done, you’re just swapping the hardware.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the TCM: On most Silverado/Sierra models, the TCM is mounted to the left-hand side of the core support or radiator area. On other vehicles, it may be on the frame rail or fan shroud. Refer to your vehicle’s service manual for the exact location.
- Disconnect Connectors: Carefully unclip the large electrical connectors from the old TCM. Inspect them for any signs of corrosion or damage and clean if necessary.
- 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 onto the bracket and secure it with the bolts.
- Reconnect and Finalize: Firmly plug the electrical connectors into the new module until they click into place. Reconnect the negative battery terminal.
- Perform Relearn (If Needed): While not always required, some vehicles benefit from a transmission adaptive pressure relearn procedure, which can be done with a capable scan tool to ensure the absolute smoothest shifting from the start.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 24276411 and 24272004. It is guaranteed to fit the following makes and models with the specified options. Please provide your VIN upon purchase to ensure correct programming.
- Cadillac CTS: 2016 (Transmission; LH front rail, ID 24276411)
- Cadillac Escalade / ESV: 2015-2017 (Transmission; LH radiator, 8-speed, opt M5U)
- Chevrolet Camaro: 2016 (Transmission Control; underhood, LH frame rail)
- Chevrolet Silverado 1500: 2015-2016 (Transmission; LH core support, 8-speed, opt M5U)
- Chevrolet Silverado 2500 / 3500: 2015-2016 (Transmission; LH fan shroud, AT, 6-speed, opt MW7)
- GMC Sierra 1500 / Denali 1500: 2015-2016 (Transmission; LH core support, 8-speed, opt M5U)
- GMC Sierra 2500 / 3500 & Denali 2500 / 3500: 2015-2016 (Transmission; LH fan shroud, AT, 6-speed, opt MW7)
- GMC Yukon / Yukon XL 1500: 2015-2016 (Transmission; LH radiator, 8-speed, opt M5U)
Frequently Asked Questions
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we receive this information.
Is this module truly plug-and-play?
Yes. Because we program it with your vehicle’s specific VIN and the latest GM software, it is ready to be installed without any additional programming or trips to the dealer. It’s designed to be a direct-swap solution.
Will this fix my specific transmission problem?
This module corrects issues directly caused by a faulty TCM, including electronic communication errors (U-codes) and incorrect shift commands. It is the most common solution for the symptoms listed above. However, it will not fix internal mechanical failures within the transmission itself.
What if I have a different part number on my old module?
This module is a direct replacement for part numbers 24276411 and 24272004. If your module has one of these numbers, this part is compatible. Always confirm fitment using our vehicle list or by contacting us with your VIN.
Do I need any special tools for installation?
For most installations, you will only need basic hand tools like a socket set to remove the module’s mounting bolts. No special programming tools are required.