Restore Flawless Shifting and Drivability
Is your 2015-2016 Sierra 2500 HD giving you trouble? Experiencing harsh, delayed shifts, getting stuck in gear, or seeing that dreaded “Service Transmission” light on your dash? These are classic signs of a failing Transmission Control Module (TCM). A faulty TCM doesn’t just make for a frustrating drive; it compromises your truck’s performance and reliability. This isn’t a problem you can ignore. In my 20+ years of diagnostics, I’ve seen firsthand how a failing TCM can sideline a perfectly good truck, often leading to expensive and incorrect repairs when the real culprit is this small electronic brain.
This is your direct, reliable solution. We are offering a genuine GM Transmission Control Module, part number 24272004 (also compatible with 24276411), that arrives at your doorstep completely programmed to your truck’s specific Vehicle Identification Number (VIN). We handle the complex part, loading the latest, most stable software from General Motors. This means you skip the expensive trip to the dealership for programming. You get a module that’s ready for installation right out of the box, designed to restore the crisp, predictable shifting you expect from your GM truck.
A Technician’s Notebook
I recently had a 2016 Silverado 2500 in the bay with the 6-speed MW7 transmission. The customer complained of erratic shifting and occasionally getting stuck in 3rd gear (limp mode). He’d already replaced a shift solenoid on another mechanic’s advice, but the problem persisted. My scan tool pulled a U0101 (Lost Communication with TCM) and a P0756 (Shift Solenoid B Performance/Stuck Off). While P0756 points to a solenoid, the U0101 code was the real key. It told me the TCM itself was intermittently failing and not communicating with the rest of the vehicle’s network. We installed one of these VIN-programmed modules, performed the transmission service relearn procedure, and the truck was shifting perfectly. The programming is the critical step that ensures all systems communicate correctly—a step this product handles for you.
Common Signs of a Failing GM TCM
If your vehicle is exhibiting any of these behaviors, a failing TCM is the likely cause. Replacing it with our pre-programmed module can be the definitive fix.
- ✔ Harsh or erratic shifting between gears.
- ✔ The vehicle feels stuck in one gear (often called “limp mode”).
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ “Service Transmission” or Check Engine Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) such as U0101, P0700, or various P07xx solenoid codes.
- ✔ Complete loss of transmission function.
Straightforward Installation Guide for Your Sierra
Installing your new 2015-2016 Sierra 2500 TCM is a manageable job for a confident DIYer or any professional technician. With our pre-programming, you eliminate the most difficult step.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the TCM: On most 2015-2016 Sierra/Silverado HD trucks, the TCM is mounted on the driver’s side of the fan shroud in the engine bay.
- Disconnect Connectors: Carefully release the locking tabs and unplug the large 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. 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 original bolts.
- Reconnect Everything: Firmly plug the electrical connectors into the new TCM until they click into place. Reconnect the negative battery terminal.
- Perform Relearn (Recommended): While the truck may drive fine immediately, a transmission service fast learn or adaptive pressure relearn using a capable scan tool is highly recommended to ensure optimal shift quality from the start. Many local shops can perform this for a minimal charge if you don’t have the tool.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 24272004 and 24276411. Please verify your vehicle’s options (e.g., 6-speed MW7 or 8-speed M5U) to ensure a perfect match. This part fits the following GM vehicles:
- Cadillac Escalade / ESV: 2015-2017 (8-speed, opt M5U)
- Cadillac CTS: 2016 (ID 24276411)
- Chevrolet Camaro: 2016
- Chevrolet Silverado 1500: 2015-2016 (8-speed, opt M5U)
- Chevrolet Silverado 2500 / 3500: 2015-2016 (6-speed, opt MW7)
- GMC Sierra 1500 / Denali 1500: 2015-2016 (8-speed, opt M5U)
- GMC Sierra 2500 / 3500 & Denali 2500 / 3500: 2015-2016 (6-speed, opt MW7)
- GMC Yukon / Yukon XL 1500: 2015-2016 (8-speed, opt M5U)
Frequently Asked Questions
What exactly is a TCM?
The Transmission Control Module (TCM) is a computer that controls your vehicle’s automatic transmission. It reads data from various sensors to determine the perfect moment to shift gears, ensuring smooth performance and fuel efficiency.
Is this part really ready to install out of the box?
Yes. The purchase price includes programming the module to your specific vehicle using the VIN you provide. This critical step ensures the TCM communicates properly with your truck’s engine and other systems, saving you a trip to the dealer.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information to perform the programming.
Do I need any special tools for installation?
Basic hand tools (like a socket set) are all that’s needed to physically swap the module. While the truck will operate after installation, we strongly recommend having a transmission adaptive pressure relearn performed with a professional scan tool for the best results.
Will this fix my transmission problems for good?
If the symptoms and diagnostic codes point to a faulty TCM, this module is the correct and definitive repair. It is loaded with the latest GM software, which often corrects issues present in the original factory programming.
Is this the same part as 24276411?
Yes, this module, part number 24272004, is a fully compatible and interchangeable replacement for part number 24276411.