Restore Smooth, Reliable Shifting to Your GM Truck
Is your 2015-2016 Sierra 1500, Silverado, or other GM vehicle suffering from erratic shifting, hesitation, or a persistent Check Engine Light? A failing Transmission Control Module (TCM) is often the culprit behind these frustrating and potentially damaging issues. As a technician with over two decades of experience, I’ve seen firsthand how a faulty TCM can mimic a major transmission failure, leading to costly and unnecessary repairs. This genuine GM TCM, part number 24276411, is the definitive solution to restore your transmission’s performance and your peace of mind.
The biggest hurdle with replacing a modern TCM is the complex programming required to sync it with your truck. We eliminate that problem entirely. Before this module ships, our experts will flash it with the latest GM-certified software, precisely matched to your vehicle’s unique Vehicle Identification Number (VIN). This means you receive a part that is 100% plug-and-play. No expensive trips to the dealership, no special scan tools required—just a straightforward installation to get you back on the road fast. This is the most efficient way to fix your transmission problems correctly the first time.
Case Study: A Tricky Diagnosis
A customer brought in his 2015 Sierra 1500 with the 8-speed transmission. The complaint was severe, jerky shifts between 1st and 2nd gear and a U0100 ‘Lost Communication with ECM/PCM’ code that would intermittently appear. He was worried he needed a full transmission rebuild, a quote he’d received for thousands of dollars. After running diagnostics, I found the transmission internals were mechanically sound. The issue was electronic. The original TCM was failing under load, causing the communication drops and erratic commands to the solenoids. We installed a new, VIN-programmed 2015-2016 Sierra 1500 TCM, and the truck shifted like it just rolled off the factory floor. It turned a potential $4,000 repair into a simple, affordable fix.
Is Your Truck Exhibiting These Telltale Signs?
A failing TCM can cause a wide range of symptoms. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Harsh, delayed, or erratic shifting
- ✔ Getting stuck in one gear (limp mode)
- ✔ Check Engine Light illuminated with transmission-related codes
- ✔ Common Diagnostic Trouble Codes (DTCs): P0700, P0751, P0756, U0100
- ✔ ‘Service Transmission’ message on the dash display
- ✔ Poor fuel economy due to inefficient shifting
A Straightforward Guide to Installation
Installing your new, pre-programmed TCM is a job most DIYers can handle with basic tools. For a 2015-2016 Sierra 1500, the module is typically found on the driver’s side of the radiator core support.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Locate the TCM: On your Sierra 1500, find the module mounted to the left-hand (driver’s side) core support, near the radiator.
- Disconnect Connectors: Carefully release the locking tabs and unplug the electrical connectors from the old TCM. Inspect them for any corrosion or damage.
- Remove the Old Module: Unbolt the old TCM from its mounting bracket. Keep the hardware as you will reuse it.
- Install the New Module: Mount your new, pre-programmed TCM using the original hardware. Ensure it is secure.
- Reconnect and Finalize: Plug the electrical connectors firmly into the new module until they click. Reconnect your battery terminal. Start the vehicle and test drive to confirm smooth shifting.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 24276411 and 24272004. It is guaranteed to fit the following GM vehicles with the specified options:
- Cadillac Escalade / ESV (2015-2017): 8-speed (opt M5U)
- Chevrolet Camaro (2016): Underhood, LH frame rail
- 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)
- And more, check the full list above for details.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready for installation.
What VIN do I need to provide?
Please provide the 17-digit VIN from the driver’s side dashboard or door jamb of the exact vehicle this TCM will be installed in. This ensures a perfect software match.
My original part number is 24272004. Will this work?
Yes, this module, part number 24276411, is a fully compatible and direct replacement for part number 24272004.
Where is the TCM on my 2016 Sierra 1500?
The Transmission Control Module is typically located on the driver’s side (LH) of the radiator core support, inside the engine bay.
Is any other relearn procedure required after installation?
In most cases, no. Since the module is pre-programmed to your VIN, the vehicle should operate normally immediately. The transmission will perform a quick adaptive learning process as you drive.