Restore Smooth, Reliable Shifting to Your GM Truck
Is your 2015-2016 Sierra 1500, Silverado, or other compatible GM vehicle suffering from harsh shifting, delayed engagement, or an illuminated check engine light? A failing Transmission Control Module (TCM) is often the culprit behind these frustrating and potentially damaging issues. As the electronic brain of your transmission, the TCM dictates every gear change. When it falters, your truck’s performance and reliability suffer. This replacement TCM, part number 24272004, is the definitive solution to get your vehicle operating as it should, without the excessive cost and hassle of a dealership visit.
Case Study: The Ghost in the Transmission
I recently had a 2015 Sierra 1500 in my bay with a classic complaint: intermittent, bone-jarring shifts from 1st to 2nd gear, but only after it warmed up. The owner had already replaced fluid and filters with no luck. A scan showed a generic P0700 transmission fault code, but no specific solenoid codes. After monitoring live data, I noticed the TCM would momentarily lose communication right before a hard shift—a dead giveaway. Heat soak was causing an internal failure in the original module. Installing a properly programmed 2015-2016 Sierra 1500 TCM like this one resolved the issue completely. The key was having a module with the latest GM software, which addresses known communication glitches.
Is Your Truck Showing These Telltale Signs?
A faulty TCM can manifest in several ways. If you’re experiencing any of the following, it’s time to consider a replacement:
- âś” Harsh or erratic shifting between gears
- âś” Getting stuck in one gear (limp mode)
- âś” Delayed engagement when shifting from Park to Drive or Reverse
- âś” Check Engine Light or “Service Transmission” warning on the dash
- âś” Common Diagnostic Trouble Codes (DTCs) such as P0700, U0101, P0751, P0756
- âś” Poor fuel economy due to inefficient shifting
The Professional’s Solution: VIN-Programmed and Ready to Install
The biggest hurdle in replacing a modern TCM is programming. This module eliminates that problem entirely. We use your vehicle’s VIN to flash the unit with the latest, most stable software directly from GM *before* it ships. This ensures it’s a true plug-and-play part, calibrated specifically for your truck’s transmission (8-speed M5U or 6-speed MW7) and options. You get a reliable, updated component without needing expensive scan tools or a trip to the dealer for programming. This is the exact process we use in the shop to guarantee a successful and efficient repair for our customers.
A Straightforward Guide to Installation
Replacing the TCM on these trucks is a job most DIYers can handle with basic tools. The module is typically located on the driver’s side of the core support or fan shroud.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the TCM: On the Sierra/Silverado, it’s usually mounted on the driver’s side, near the radiator or on the fan shroud.
- Disconnect Connectors: Carefully unclip the electrical wiring harnesses from the old module. Press the release tabs firmly and pull straight out.
- Remove Mounting Bolts: Unbolt the old TCM from its bracket. There are typically two or three 10mm bolts holding it in place.
- Install the New Module: Mount your new, pre-programmed TCM onto the bracket and secure it with the bolts.
- Reconnect Everything: Plug the wiring harnesses back into the new module until they click securely. Reconnect the negative battery terminal.
- Final Steps: In some cases, a transmission service fast learn procedure with a capable scan tool may be recommended for optimal performance, but the vehicle will be operational upon installation.
Will This Fit My Vehicle?
This module is a direct replacement for part numbers 24272004 and 24276411. It is guaranteed to fit the following GM models with the specified options:
- 2016 Cadillac CTS: (LH front rail), ID 24276411
- 2016 Chevrolet Camaro: (Underhood, LH frame rail)
- 2015-2017 Cadillac Escalade / Escalade ESV: (LH radiator), 8-speed (opt M5U)
- 2015-2016 GMC Sierra 1500 / Denali 1500: (LH core support), 8-speed (opt M5U)
- 2015-2016 GMC Sierra 2500/3500 & Denali 2500/3500: (LH fan shroud), 6-speed (opt MW7)
- 2015-2016 Chevrolet Silverado 1500: (LH core support), 8-speed (opt M5U)
- 2015-2016 Chevrolet Silverado 2500/3500: (LH fan shroud), 6-speed (opt MW7)
- 2015-2016 GMC Yukon / Yukon XL 1500: (LH radiator), 8-speed (opt M5U)
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential for us to load the correct, vehicle-specific GM software onto the TCM. This ensures perfect compatibility with your truck’s engine, transmission type, and factory options, making the installation seamless.
Is this part difficult to install for a DIYer?
No, this is a very manageable DIY job. The TCM is typically easy to access in the engine bay, requiring only basic hand tools for removal and installation. Our pre-programming service handles the most complex part of the job for you.
Will I need to do anything after installing this module?
The module arrives ready to install and operate the vehicle. While not always required, a transmission service fast learn or adaptive pressure reset with a compatible scan tool can help the transmission adapt to the new module even quicker for the smoothest possible performance.
Does this module fix “limp mode”?
Yes, in most cases where limp mode (being stuck in one gear) is caused by a faulty TCM, this part will resolve the issue. Limp mode is a protective measure triggered by the vehicle’s computer when it detects a critical transmission fault, often originating from the TCM itself.
Is this a genuine GM part?
This is a high-quality replacement module loaded with official GM-licensed software. It’s designed to meet or exceed original equipment specifications for performance and longevity, providing a reliable and cost-effective repair.