Restore Crisp, Reliable Shifting to Your GM Truck
Is your 2015-2016 Sierra 2500 pickup suddenly shifting harshly, getting stuck in gear, or throwing a check engine light? Before you start pricing out a new transmission, the problem is very often the electronic brain that controls it: the Transmission Control Module (TCM). As an automotive diagnostician with over two decades of experience, I’ve seen countless GM trucks exhibit these exact issues, and a faulty TCM is one of the most common culprits. This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine GM TCM, part number 24276411, and flash it with the very latest factory software calibrated specifically to your truck’s Vehicle Identification Number (VIN). This ensures perfect communication between your engine and transmission, restoring the smooth, predictable performance you expect.
Is Your Truck Showing These Symptoms?
A failing TCM can manifest in several ways, often mistaken for more severe mechanical failures. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Harsh or delayed shifting between gears
- ✔ Transmission getting stuck in one gear (limp mode)
- ✔ “Service Transmission” or “Shift Range Inhibited” message on the dash
- ✔ Check Engine Light with transmission-related Diagnostic Trouble Codes (DTCs)
- ✔ Common DTCs stored: P0700, P0606, U0101 (Lost Communication with TCM)
- ✔ Inaccurate gear indicator on the instrument cluster
Case Study: A Tricky Diagnosis
A customer brought in his 2016 Silverado 2500, convinced the transmission was shot. It was slamming into gear and occasionally wouldn’t shift out of 3rd. Another shop had quoted him over $4,000 for a transmission replacement. I hooked up my scanner and immediately found code U0101 – no communication with the TCM. After checking the wiring and connectors (which were fine), it was clear the module itself had an internal failure. Instead of a massive mechanical job, the fix was a new, correctly programmed TCM. We installed one just like this, pre-flashed to his VIN, and had him back on the road in under an hour. He saved thousands of dollars and a lot of unnecessary downtime. It’s a perfect example of why you should always diagnose the electronics first.
The Critical Advantage: Pre-Programmed for Your VIN
A new TCM straight from the dealer is just a blank box. It requires specialized, expensive equipment (like GM’s MDI 2) and a paid subscription to their software service to program it to your vehicle. This process can cost hundreds of dollars and requires a trip to a dealership or a high-end specialty shop. Our service eliminates that entire headache. You provide us with your truck’s VIN during checkout, and we handle the programming for you. When the module arrives, your 2015-2016 Sierra 2500 TCM is ready for a straightforward installation, saving you significant time and money.
A Straightforward Guide to Installation
For the 2015-2016 Sierra/Silverado 2500/3500, the TCM is located on the driver’s side of the fan shroud, making it one of the more accessible modules to replace. This is a job most DIYers can handle with basic tools.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the TCM: Open the hood and find the TCM mounted on the left (driver’s side) of the radiator fan shroud.
- Disconnect Connectors: Carefully release the locking tabs and unplug the electrical connectors from the old module. Inspect the connectors for any corrosion or damage.
- Remove the Old Module: Unbolt the old TCM from its mounting bracket on the fan shroud. It’s typically held on 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 Everything: Plug the electrical connectors firmly into the new module until they click into place. Reconnect the negative battery terminal.
- Final Check: Start the vehicle and check for any warning lights. Take it for a test drive to confirm that shifting has returned to normal. No further programming is required.
Verified Vehicle Compatibility
This module, part number 24276411 (also replaces 24272004), is a direct fit for a wide range of GM vehicles. Please confirm your model and options below:
- Cadillac Escalade / ESV: 2015-2017 (8-speed, opt M5U)
- Chevrolet Camaro: 2016
- Chevrolet Silverado 1500: 2015-2016 (8-speed, opt M5U)
- Chevrolet Silverado 2500 / 3500: 2015-2016 (6-speed, opt MW7)
- Cadillac CTS: 2016 (ID 24276411)
- GMC Sierra 1500 / Denali 1500: 2015-2016 (8-speed, opt M5U)
- GMC Sierra 2500 / 3500 & Denali Models: 2015-2016 (6-speed, opt MW7)
- GMC Yukon / Yukon XL 1500: 2015-2016 (8-speed, opt M5U)
Frequently Asked Questions
How do I provide my vehicle’s VIN?
After you complete your purchase, simply reply to your order confirmation email with your 17-digit VIN, or send it to us through our website’s contact form with your order number. We cannot ship the module until we receive your VIN.
Is any additional programming needed after I install it?
No. This 2015-2016 Sierra 2500 TCM arrives fully programmed with the latest GM software for your specific vehicle. The installation is plug-and-play, with no dealer visit required.
My original module has a different part number. Will this still work?
Yes, this module is the correct service replacement for part numbers 24276411 and 24272004. As long as your vehicle is on the compatibility list, this is the correct part.
Is this a new or used part?
This is a high-quality, inspected, and tested genuine OEM part that has been professionally programmed to function as new. It’s a reliable and cost-effective alternative to a brand-new, unprogrammed module from a dealership.
What is the warranty on this module?
This part comes with our standard warranty, ensuring it is free from defects in functionality. Please see our warranty page for complete details and duration.