Restore Peak Transmission Performance in Your GM Truck or SUV
Is your 2015 or 2016 GMC Yukon XL 1500 suffering from erratic shifting, delayed gear engagement, or a persistent check engine light? The Transmission Control Module (TCM) is the central command unit for your vehicle’s 8-speed automatic transmission, and its failure can lead to a frustrating and potentially damaging driving experience. This replacement TCM, part number 24276411, is the definitive solution to get your vehicle operating as it should. We take the guesswork and extra expense out of the equation by pre-programming the module with the latest GM software specifically for your vehicle’s VIN. This means no trip to the dealership is required for flashing—it arrives ready for installation.
Is Your TCM Failing? Spot These Warning Signs
- ✔ Unpredictable or harsh shifting between gears.
- ✔ The transmission seems to get stuck in one gear (limp mode).
- ✔ Delayed response when shifting from Park to Drive or Reverse.
- ✔ “Service Transmission” warning message on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs) such as U0101 (Lost Communication With TCM).
- ✔ Poor fuel economy due to inefficient transmission operation.
Step-by-Step Guide to a Hassle-Free Installation
Replacing the 2015-2016 Yukon XL TCM is a straightforward job for a confident DIYer or any professional technician. With our pre-programmed module, you’ll be back on the road in no time.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On most of these GM trucks and SUVs, the TCM is mounted on the driver’s side, near the radiator or on the core support.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Note the orientation of any locking tabs. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new, pre-programmed TCM in the same location. Securely fasten the bolts.
- Reconnect: Plug the electrical connectors firmly into the new module. You should hear a click as they lock into place.
- Final Steps: Reconnect the negative battery terminal. Start the vehicle and allow it to idle for a few minutes. A short test drive with gentle acceleration will allow the system to fully adapt.
A Mechanic’s Field Tale: The Phantom Shudder
We had a 2015 Sierra 1500 in the shop with a bizarre, intermittent shudder at around 45 mph. The owner had been to two other shops that couldn’t find the cause. There were no consistent trouble codes, just a vague history of a communication fault. We suspected the TCM was failing internally, causing momentary signal drops to the transmission solenoids. Instead of a full transmission teardown, we started with this VIN-programmed TCM. After a simple swap, the shudder was completely gone. The owner was thrilled to have avoided a multi-thousand-dollar bill for a problem that was purely electronic. It’s a classic reminder that the brain is just as important as the brawn.
Confirmed Vehicle Fitment
This module is a direct replacement for part numbers 24276411 and 24272004 and is confirmed to fit the following vehicles with the specified options:
- 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: 2015-2016 (6-speed, opt MW7)
- GMC Yukon / Yukon XL 1500: 2015-2016 (8-speed, opt M5U)
Please provide your VIN upon purchase to ensure we flash the correct software for your vehicle’s specific configuration.
Frequently Asked Questions
Do I need to get this module programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready to install.
Where is the TCM located on my 2015 Yukon XL?
The Transmission Control Module is typically located on the driver’s side of the engine bay, mounted to the radiator core support or the inner fender frame rail.
Will this part fix my transmission’s hard shifting?
A faulty TCM is one of the most common causes of hard or erratic shifting in these vehicles. If your symptoms match those listed and you have related diagnostic codes, this module is the most likely solution.
Why do you need my VIN?
The VIN (Vehicle Identification Number) allows us to access the specific factory software and calibration files for your vehicle’s exact build, including engine, transmission, and other options. This ensures perfect compatibility and performance.
Is any other relearn procedure needed after installation?
In most cases, no special relearn procedure is required. After installation, a short test drive with varied speeds allows the transmission’s adaptive learning strategy to adjust to the new module and driving style.