Restore Your Truck’s Powertrain Performance
If you’re dealing with the frustration of a transmission that won’t shift correctly, hesitates, or throws confusing error codes on your dash, 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 a Sierra Denali to a standstill. It’s the brain of your transmission, and when it falters, the symptoms can range from annoying to debilitating. This isn’t just a part; it’s the solution to getting your truck’s crisp, reliable shifting back.
We offer a dependable, pre-programmed Transmission Control Module, part number 24272004 (also compatible with 24276411). The biggest hurdle in replacing a modern vehicle module is the programming. We eliminate that completely. Before this module ships, we flash it with the latest official GM software specifically matched to your vehicle’s VIN. This means it arrives at your door ready for installation, saving you a costly trip to the dealership and the hassle of coordinating programming services.
Case Study: A Tricky Diagnosis
I remember a 2015 Sierra 1500 that came into the shop with a complaint of intermittent, bone-jarring shifts from 2nd to 3rd gear, but only after it was fully warmed up. There were no consistent check engine lights, just a stored history code for U0100 (Lost Communication with ECM/PCM). We checked wiring and connectors, which all seemed fine. The issue was so intermittent it was nearly impossible to replicate on a test drive. Based on experience with these 8-speed transmissions, we suspected the TCM was failing internally under heat. We installed a VIN-programmed module, and the problem vanished instantly. The customer called a week later, thrilled that his truck drove better than it had in years. This highlights how a faulty 2015-2016 Sierra Denali 1500 TCM can cause elusive issues that a simple component swap can permanently resolve.
Is Your Truck Exhibiting These Transmission Faults?
A failing TCM often gives clear warning signs. If you’re noticing any of the following, it’s a strong indicator that your module is the culprit:
- âś” Harsh or erratic shifting between gears
- âś” Delayed engagement when shifting from Park to Drive or Reverse
- âś” Vehicle stuck in one gear (often called “limp mode”)
- âś” “Service Transmission” or Check Engine Light illuminated
- âś” Diagnostic Trouble Codes (DTCs) such as P0700, U0100, P0606, or other transmission-related faults
- âś” Inaccurate gear indicator on the dashboard
A Straightforward Guide to Installation
Replacing the TCM on your Sierra or similar GM truck is a manageable job for a confident DIYer. Since our module comes pre-programmed, you skip the most difficult step. Here’s a general guide:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the TCM: On most 2015-2016 Sierra/Silverado 1500 models, the TCM is mounted to the left-hand (driver’s side) core support, near the radiator.
- Disconnect Connectors: Carefully release the locking tabs and unplug the main electrical connectors from the old module. Inspect them for any corrosion or damage.
- Unbolt the Module: Remove the bolts or nuts securing the TCM to its mounting bracket. Keep the hardware safe for reinstallation.
- Install the New Module: Mount your new, pre-programmed TCM in place and secure it with the original hardware.
- Reconnect Everything: Plug the electrical connectors firmly back into the new module until they click. Reconnect the negative battery terminal.
- Final Steps: Start the vehicle. While no further programming is needed, some vehicles may require a simple idle relearn or a short drive cycle for the system to fully sync. In most cases, it’s ready to go.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of General Motors vehicles. Please verify your part number (24272004 or 24276411) and check the list below. This part is confirmed to fit:
- Cadillac Escalade / ESV: 2015-2017 (8-speed, M5U)
- Cadillac CTS: 2016 (ID 24276411)
- Chevrolet Camaro: 2016
- Chevrolet Silverado 1500: 2015-2016 (8-speed, M5U)
- Chevrolet Silverado 2500/3500: 2015-2016 (6-speed, MW7)
- GMC Sierra 1500: 2015-2016 (8-speed, M5U)
- GMC Sierra Denali 1500: 2015-2016
- GMC Sierra 2500/3500 & Denali 2500/3500: 2015-2016 (6-speed, MW7)
- GMC Yukon / Yukon XL 1500: 2015-2016 (8-speed, M5U)
By purchasing this pre-programmed 2015-2016 Sierra Denali 1500 TCM, you are choosing a reliable, cost-effective repair that restores your vehicle’s function and your driving confidence.
Frequently Asked Questions
What do I need to do after I purchase this TCM?
After you complete your purchase, you must provide us with your vehicle’s 17-digit VIN. We use this to load the correct, most up-to-date GM software onto the module before we ship it to you.
Is any additional programming required after installation?
No. This module is a true plug-and-play solution. Because we program it to your VIN, you can install it and drive without needing a trip to the dealer or a specialized scan tool for programming.
Where is the TCM located on my 2016 Sierra 1500?
On the 2015-2016 Sierra and Silverado 1500 trucks, the Transmission Control Module is typically located on the driver’s side of the radiator core support in the engine bay.
Will this part fix common communication codes like U0100?
Yes, in many cases. A U0100 code (Lost Communication With ECM/TCM) is a very common symptom of an internal failure in the TCM. Replacing the faulty module with this pre-programmed unit is a direct fix for that issue.
How can I be sure this is the correct part for my truck?
Please match your original part number to either 24272004 or 24276411. You can also confirm your vehicle’s make, model, and year are on our compatibility list. Providing your VIN ensures we program it perfectly for your specific configuration.