Restore Flawless Shifting to Your GM Vehicle
Is your GMC Yukon, Sierra, or Cadillac Escalade suffering from erratic shifting, delayed gear engagement, or a persistent check engine light? These are classic signs of a failing Transmission Control Module (TCM), the electronic brain of your automatic transmission. When the TCM falters, it can make driving frustrating and unpredictable. This replacement TCM, part number 24276411, is the definitive solution, arriving at your door fully programmed with the latest GM software, specifically matched to your vehicle’s VIN.
Spot These Warning Signs Early
A failing TCM doesn’t just get better on its own. If you’re noticing any of the following symptoms, it’s time to address the root cause:
- ✔ Harsh or clunky shifts between gears, especially when accelerating or decelerating.
- ✔ The transmission seems to get stuck in one gear (limp mode).
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ An illuminated Check Engine Light with transmission-related Diagnostic Trouble Codes (DTCs) such as P0700, P0751, or U0101.
- ✔ Inaccurate gear indicator on your dashboard.
- ✔ Complete loss of communication with the transmission, leading to a no-start condition.
Step-by-Step Guide to Get You Rolling
Replacing your 2015-2016 Yukon TCM is a straightforward job that most DIY mechanics can handle. Since this module comes pre-programmed, you skip the expensive and time-consuming trip to the dealership. Follow these general steps for a smooth installation:
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Old TCM: On most compatible trucks and SUVs, the TCM is mounted on the driver’s side, either on the core support near the radiator, on the fan shroud, or along the frame rail.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be released. Once disconnected, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place. Securely reconnect the electrical harnesses, ensuring they click and lock firmly.
- Power Up: Reconnect the negative battery terminal.
- Initial Test: Start the vehicle and let it idle for a few minutes. Cycle through the gears (Park, Reverse, Neutral, Drive) while holding the brake. Take it for a test drive to confirm that shifting is smooth and responsive. In some cases, the vehicle’s systems will perform a quick self-relearn process.
Lessons from the Garage Floor
I recently worked with a customer whose 2015 Silverado 1500 with the 8-speed was shifting so hard it felt like being rear-ended at every light. The dealership quoted him over $1200 for a new module plus programming and labor. He was hesitant, to say the least. We sent him this exact pre-programmed TCM. He called back two days later, ecstatic. He’d installed it himself in under 30 minutes in his driveway. The truck, in his words, “drives better than it has in years.” This isn’t just a part; it’s a direct, cost-effective solution that puts the power back in the owner’s hands.
Perfect Match for These Models
This module is a direct replacement for part numbers 24276411 and 24272004 and is guaranteed to fit the following vehicles with the specified options:
- Cadillac CTS: 2016
- 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)
- 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 do I need to do after I place my order?
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, ensuring it’s a perfect match for your vehicle’s specific configuration.
Is any additional programming required after installation?
No. This TCM is a true plug-and-play solution. Because we program it to your VIN before shipping, you can avoid the hassle and expense of a trip to a dealership or specialized shop for programming.
Will this TCM fix my transmission’s harsh shifting problem?
A faulty TCM is the most common cause of harsh and erratic shifting in these vehicles. While this module resolves the issue in the vast majority of cases, it’s always best to ensure your vehicle has been properly diagnosed. This part corrects electronic and software-related faults within the module itself.
Where is the TCM located on my 2015 Sierra?
On the 2015-2016 Sierra and Silverado trucks, the Transmission Control Module is typically found bolted to the driver’s side core support, just behind the headlight and near the radiator.
Do I need to perform a transmission relearn procedure?
In most cases, a formal relearn procedure is not necessary. The vehicle’s computer systems will adapt to the new module during the first few drive cycles. Simply drive normally, and the shifting strategy will optimize itself.