Restore Your GM’s Shifting Precision
Is your GMC Yukon, Sierra, or Silverado suffering from erratic shifting, delayed gear engagement, or a persistent check engine light? The Transmission Control Module (TCM) is the brain of your automatic transmission, and when it fails, it can cause a host of frustrating and potentially damaging drivability issues. This replacement TCM, part number 24272004, is the definitive solution to get your truck or SUV performing like it just rolled off the factory line. We take the guesswork and dealer expense out of the equation by pre-programming the module to your vehicle’s specific VIN before it ships. This ensures perfect communication with your vehicle’s other systems and a smooth, straightforward installation process.
Is Your Vehicle Exhibiting These Warning Signs?
A faulty TCM can manifest in several ways. If you’re noticing any of the following, it’s a strong indicator that your module needs attention:
- ✔ Harsh, jerky, or unpredictable shifting between gears.
- ✔ The transmission seems stuck in one gear (often called ‘limp mode’).
- ✔ A lit Check Engine Light with transmission-related Diagnostic Trouble Codes (DTCs) such as P0700, P0751, or P0756.
- ✔ A “Service Transmission” warning message appearing on your instrument cluster.
- ✔ Significant delay when shifting from Park into Drive or Reverse.
Step-by-Step Guide to Get You Rolling Again
Installing your new, VIN-programmed 2015-2016 Yukon TCM is a manageable task for a confident DIYer. Follow these steps for a successful replacement:
- Safety First: Always begin by disconnecting the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Old TCM: Depending on your model, the TCM is typically mounted in the engine bay. Common locations for these GM trucks and SUVs are on the driver’s side core support, near the radiator, or on the fan shroud.
- Disconnect and Remove: Carefully unplug the main electrical harness connectors. Be gentle with the locking tabs. Once disconnected, unbolt the module from its mounting bracket and remove it from the vehicle.
- Install the New Module: Position your new pre-programmed TCM onto the mounting bracket and secure it with the original bolts. Firmly reconnect the electrical harnesses, ensuring they click into place.
- Final Steps: Reconnect the negative battery terminal. Start the engine and allow it to idle for a minute. Cycle through the gears (P-R-N-D) while stationary, then take the vehicle for a test drive to confirm that shifting is smooth and responsive.
Lessons from the Garage Floor: The Case of the Hesitant Silverado
A customer brought in his 2015 Silverado 1500 with the 8-speed transmission, complaining of a violent bang when shifting from 1st to 2nd gear. He’d been told by another shop he needed a full transmission rebuild. After a quick scan, we found codes pointing directly to internal TCM failure. Instead of a multi-thousand dollar repair, we installed a VIN-programmed module just like this one. The entire job took less than an hour, and the truck shifted perfectly on the test drive. The customer saved a significant amount of money and time by correctly diagnosing the electronic failure instead of assuming a mechanical one. This highlights the importance of addressing the vehicle’s computer controls first.
Perfect Match for These Models
This module is a direct replacement for part numbers 24272004 and 24276411, and is confirmed to fit the following vehicles:
- CAMARO: 2016
- CTS: 2016
- ESCALADE / ESCALADE ESV: 2015-2017 (with 8-speed, opt M5U)
- SIERRA 1500 / DENALI 1500: 2015-2016 (with 8-speed, opt M5U)
- SIERRA 2500 & 3500 / DENALI 2500 & 3500: 2015-2016 (with 6-speed, opt MW7)
- SILVERADO 1500: 2015-2016 (with 8-speed, opt M5U)
- SILVERADO 2500 & 3500: 2015-2016 (with 6-speed, opt MW7)
- YUKON / YUKON XL 1500: 2015-2016 (with 8-speed, opt M5U)
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. We handle all the programming for you before we ship. Simply provide your vehicle’s VIN during or after checkout, and the module will arrive ready for installation.
What is the benefit of a VIN-programmed module?
Programming the module to your specific VIN ensures it has the correct software and calibrations for your vehicle’s exact configuration (engine, axle ratio, tire size, etc.). This guarantees proper transmission function and seamless integration with other vehicle computers.
Where is the TCM located on my 2015 Sierra 1500?
On the 2015 Sierra 1500, the Transmission Control Module is typically mounted on the driver’s side (LH) core support, near the front of the engine bay.
Is any special ‘relearn’ procedure required after installation?
In most cases, the vehicle will adapt to the new module on its own during the first few drive cycles. While a professional scan tool can perform a fast-adaptive learn, it is generally not required for the vehicle to operate correctly.
What happens if I install this without providing a VIN?
We cannot ship the module without your VIN. An unprogrammed module will not function in the vehicle, as it lacks the necessary operating software to communicate with the engine and other systems.