Restore Smooth, Reliable Shifting to Your GM Vehicle
Is your 2015-2016 GMC Yukon, Sierra, or Escalade suffering from erratic shifting, getting stuck in gear, or displaying a ‘Service Transmission’ warning? These are classic signs of a failing Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty TCM can sideline an otherwise perfectly good truck or SUV. It’s not just an annoyance; it’s a critical component for your vehicle’s performance and safety. This module, part number 24272004, is the definitive solution to get you back on the road with confidence.
The biggest hurdle with TCM replacement has always been the expensive and time-consuming programming required at a dealership. We eliminate that problem entirely. Before we ship this module, we flash it with the latest official GM software, specifically matched to your vehicle using the VIN you provide. This means it arrives at your door ready for a straightforward, plug-and-play installation. This isn’t just a replacement part; it’s a complete, hassle-free fix for your transmission woes.
Case Study: A Tricky Diagnosis
A customer brought in a 2015 Sierra 1500 with the 8-speed transmission. The complaint was intermittent harsh downshifts, but only after it was fully warmed up. There were no consistent trouble codes, just a history U0101 (Lost Communication with TCM). We could have spent hours chasing phantom wiring issues. However, from experience, I know that heat-soak can cause the internal circuits of these TCMs to fail intermittently. We swapped in a VIN-programmed module, and the problem was solved instantly. The customer avoided a costly diagnostic bill and a potential transmission rebuild by addressing the root cause: the failing electronic brain.
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. Confirming your diagnosis with a professional scan tool is always recommended.
- ✔ Erratic or harsh shifting between gears
- ✔ The transmission getting stuck in one gear (limp mode)
- ✔ Check Engine Light or ‘Service Transmission’ message on the dash
- ✔ Delayed engagement when shifting from Park to Drive or Reverse
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0751, or U0101
- ✔ Complete loss of communication with the transmission module
A Straightforward Guide to Installation
Replacing your 2015-2016 Yukon TCM is a manageable job for a DIY enthusiast or any professional mechanic. Since we program it beforehand, you won’t need any special scan tools for software installation.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the TCM: On most of these trucks and SUVs, the TCM is mounted on the driver’s side, near the radiator support or fan shroud. Refer to your vehicle’s service manual for the exact location.
- Disconnect Connectors: Carefully release the locking tabs and unplug the electrical connectors from the old module. Inspect them for any corrosion or damage.
- Remove the Old Module: Unbolt the old TCM from its mounting bracket. It’s typically held in place by a few small bolts.
- Install the New Module: Mount your new, pre-programmed TCM onto the bracket and secure it with the bolts.
- Reconnect Everything: Plug the electrical connectors firmly into the new module until they click into place. Reconnect the negative battery terminal.
- Final Check: Start the vehicle and check for any warning lights. A short drive with varied shifting patterns will allow the system to fully adapt. In some cases, a transmission adaptive pressure reset may be beneficial but is not always required.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 24272004 and 24276411. It is guaranteed to fit the following GM models equipped with the specified transmission options:
- Cadillac Escalade / ESV: 2015-2017 (8-speed, opt M5U)
- Cadillac CTS: 2016 (ID 24276411)
- 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
Why do you need my VIN number?
Your Vehicle Identification Number (VIN) is essential. It allows us to access the exact factory software calibration for your specific vehicle’s configuration (engine, transmission, axle ratio, etc.). This ensures the module works perfectly right out of the box, without needing a trip to the dealer.
Is this a simple plug-and-play installation?
Yes. Because we pre-program the module to your VIN, the physical installation is a direct swap. No software flashing or special tools are required on your end. Simply unbolt the old unit and install the new one.
Will this fix my harsh shifting problem?
In the vast majority of cases, a faulty TCM is the direct cause of issues like harsh shifting, delayed engagement, and limp mode. This module, loaded with the newest GM software, is designed to correct those problems and restore factory performance.
What is the difference between part numbers 24272004 and 24276411?
These are interchangeable GM part numbers for the same component. Functionally, they are identical. If your original module has either of these numbers, this part is the correct replacement for you.
Do I need to perform a transmission relearn procedure after installation?
While the module is programmed and ready to go, some technicians recommend performing a transmission adaptive learn procedure with a capable scan tool for optimal performance. However, for most owners, the transmission will adapt and learn on its own during the first 20-50 miles of normal driving.