Restore Flawless Shifting in Your GM Vehicle
Is your 2016 Cadillac CTS or another GM vehicle suffering from erratic transmission behavior? As a technician with over two decades of experience, I’ve seen firsthand how a failing Transmission Control Module (TCM) can turn a smooth ride into a frustrating and unpredictable ordeal. Symptoms like harsh, delayed shifts, getting stuck in gear, or an illuminated check engine light are often the first signs that the brain of your transmission is in trouble. This isn’t just an annoyance; it’s a critical component failure that can affect your vehicle’s safety and performance.
This is your direct-fit, reliable solution. We are offering a genuine GM Transmission Control Module, part number 24276411, that arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). By handling the programming with the latest GM software updates before we ship, we eliminate the most expensive and time-consuming step of the repair. You can bypass the dealership, save on programming fees, and get your car, truck, or SUV shifting like new again. This is the smart, efficient fix for both professional repair shops and determined DIY enthusiasts.
Case Study: A Tricky Diagnosis
I remember a 2016 Sierra 1500 with the 8-speed M5U transmission that came into my shop with a complaint of intermittent, bone-jarring shifts, especially from 1st to 2nd gear. The strange part was that it wouldn’t always happen, and there were no consistent trouble codes—just a generic P0700 (Transmission Control System Malfunction) that would pop up occasionally. After checking fluid levels and ruling out mechanical issues, we suspected the TCM. The internal logic was failing under certain temperature conditions, causing the erratic commands. Swapping in a pre-programmed TCM like this one solved the problem instantly. The customer was thrilled to have his smooth-shifting truck back without a prolonged and costly diagnostic battle at the dealership.
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 or slamming gear engagements
- ✔ Delayed shifting or failure to shift
- ✔ Vehicle stuck in “limp mode” (usually one gear)
- ✔ Check Engine Light or “Service Transmission” warning on the dash
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, U0101, or other transmission-related faults
- ✔ Inaccurate gear indicator display
A Straightforward Guide to Installation
Installing your new 2016 CTS TCM is a manageable job for a confident DIYer or a quick task for any professional. While specific locations vary slightly by model, the general process is consistent.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On many GM trucks (Sierra/Silverado), the TCM is found on the LH core support or fan shroud. On cars like the CTS or Camaro, it’s often on the LH frame rail. Consult a service manual for your specific vehicle if you’re unsure.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly to avoid damaging them. Then, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place. Reconnect the electrical harnesses, ensuring they click securely into position.
- Final Steps: Reconnect the negative battery terminal. In some cases, a transmission service relearn procedure may be recommended with a capable scan tool to ensure the fastest adaptation, but the vehicle will also relearn shift points over time with normal driving.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 24276411 and 24272004. It is guaranteed to fit the following GM vehicles equipped with the specified options:
- Cadillac CTS: 2016
- Cadillac Escalade / ESV: 2015-2017 (8-speed, M5U)
- Chevrolet Camaro: 2016
- Chevrolet Silverado 1500: 2015-2016 (8-speed, M5U)
- Chevrolet Silverado 2500 / 3500: 2015-2016 (6-speed, MW7)
- GMC Sierra 1500 / Denali 1500: 2015-2016 (8-speed, M5U)
- GMC Sierra 2500 / 3500 & Denali 2500 / 3500: 2015-2016 (6-speed, MW7)
- GMC Yukon / Yukon XL 1500: 2015-2016 (8-speed, M5U)
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. This is the biggest benefit we offer. We program the module to your vehicle’s VIN before shipping it. It arrives ready for installation, saving you time and money.
How do I provide my VIN?
After you complete your purchase, you will need to send us a message with your 17-digit VIN. We cannot ship the module until we receive this information for programming.
Will this fix a U0101 Lost Communication with TCM code?
In many cases, yes. A U0101 code often indicates a complete internal failure of the TCM. As long as the wiring and connectors to the module are intact, replacing the module should resolve this communication fault.
Is this a genuine GM part?
Yes, this is a genuine GM component loaded with the latest official software from General Motors for your specific vehicle. It ensures proper function and reliability.
What is the difference between this and just buying one from a salvage yard?
A salvage yard module will be programmed for the vehicle it came from, not yours. It would still require a trip to a dealer or equipped shop for correct programming, which often costs hundreds of dollars. Our module is a plug-and-play solution tailored to your car.