Restore Your Truck’s Shifting Performance and Reliability
Are you tired of dealing with erratic shifting, delayed gear engagement, or a persistent Check Engine Light on your 2015-2016 Silverado 3500? 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 shift point and clutch pressure. When it falters, your truck’s performance, fuel economy, and drivability suffer. In my 20+ years of experience, I’ve seen countless heavy-duty trucks sidelined by a faulty TCM, leaving owners facing expensive diagnostic bills and potential transmission damage.
This is your direct-fit, reliable solution. We offer a genuine replacement TCM, part number 24272004, that arrives at your door fully programmed to your truck’s specific Vehicle Identification Number (VIN). This critical step eliminates the need for a costly trip to the dealership for programming. We load the latest GM-certified software updates before shipping, ensuring optimal performance and communication with your vehicle’s other modules. By installing this pre-programmed 2015-2016 Silverado 3500 TCM, you’re not just replacing a part; you’re restoring the precise, smooth shifting your truck had when it was new.
A Technician’s Notebook: The $4,000 Misdiagnosis
A customer brought in his ’15 Sierra 2500, a truck nearly identical in its powertrain controls to the Silverado HD. He was getting quotes for a full transmission rebuild—upwards of $4,000. His symptoms were severe: harsh 2-3 shifts and occasionally getting stuck in what he called “limp mode.” Another shop told him the clutches were shot. I scanned the vehicle and found code P0752 (Shift Solenoid ‘A’ Stuck On) and U0101 (Lost Communication with TCM). While P0752 can point to an internal issue, the U-code was the real clue. A communication loss often points to the module itself. We checked the wiring and found it solid. On a hunch, we installed a known-good, programmed TCM. The difference was immediate. All shifting returned to normal, and the codes were cleared permanently. The customer saved thousands because the problem was never the mechanical transmission—it was the failing electronic brain. This is a scenario I’ve seen play out dozens of times.
Is Your Truck Exhibiting These Symptoms?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution.
- ✔ Harsh, jerky, or delayed gear shifts.
- ✔ Transmission getting stuck in one gear (limp mode).
- ✔ Flashing “Service Transmission” or “Shift Inhibited” message.
- ✔ Check Engine Light is illuminated on your dashboard.
- ✔ Common Diagnostic Trouble Codes (DTCs) stored, such as P0700, P0751, P0752, U0100, or U0101.
- ✔ Unexplained drops in fuel efficiency.
A Straightforward Guide to Installation
Installing your new 2015-2016 Silverado 3500 TCM is a manageable job for a confident DIYer or any professional technician. Since the module comes pre-programmed, no special scan tools are needed for setup.
- Safety First: Always disconnect the negative terminal from your truck’s battery before beginning any electrical work.
- Locate the TCM: On most 2015-2016 GM HD trucks, the TCM is mounted on the driver’s side of the fan shroud or radiator core support. It’s a silver box with large electrical connectors.
- Disconnect Connectors: Carefully release the locking tabs and unplug the electrical harnesses from the old TCM. Inspect the connectors for any corrosion or damage.
- Remove the Old Module: Unbolt the old TCM from its mounting bracket. There are typically a few small bolts holding it in place.
- Install the New Module: Mount your new, pre-programmed TCM onto the bracket and secure it with the original bolts.
- Reconnect and Secure: Plug the electrical harnesses firmly into the new module until they click into place. Ensure the locking tabs are fully engaged.
- Final Steps: Reconnect the negative battery terminal. It’s a good practice to clear any old codes with a basic OBD-II scanner after installation. Start the vehicle and test drive to confirm smooth shifting has been restored.
Guaranteed Fitment for Your GM Vehicle
This module, interchangeable with part numbers 24272004 and 24276411, is a confirmed fit for a wide range of General Motors vehicles. Please verify your model and options below. This is the correct replacement 2015-2016 Silverado 3500 TCM for models with the 6-speed automatic transmission (RPO code MW7).
This part will fit these makes and models with these options
CAMARO 16 Transmission Control; (underhood, LH frame rail)
CTS 16 Transmission; (LH front rail), ID 24276411
ESCALADE 15-17 Transmission; (LH radiator), (8 speed, opt M5U)
ESCALADE ESV 15-17 Transmission; (LH radiator), (8 speed, opt M5U)
SIERRA 1500 PICKUP 15 Transmission; (LH core support), (8 speed, opt M5U)
SIERRA 1500 PICKUP 16 Transmission, (LH core support), (8 speed, opt M5U)
SIERRA 2500 PICKUP 15 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7), w/model year break point (opt AVF)
SIERRA 2500 PICKUP 16 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7)
SIERRA 3500 PICKUP 15 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7), w/model year break point (opt AVF)
SIERRA 3500 PICKUP 16 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7)
SIERRA DENALI 1500 15-16 Transmission; (LH core support)
SIERRA DENALI 2500 15 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7), w/model year break point (opt AVF)
SIERRA DENALI 2500 16 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7)
SIERRA DENALI 3500 15 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7), w/model year break point (opt AVF)
SIERRA DENALI 3500 16 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7)
SILVERADO 1500 PICKUP 15-16 Transmission; (LH core support), (8 speed, opt M5U)
SILVERADO 2500 PICKUP 15 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7), w/model year break point (opt AVF)
SILVERADO 2500 PICKUP 16 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7)
SILVERADO 3500 PICKUP 15 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7), w/model year break point (opt AVF)
SILVERADO 3500 PICKUP 16 Transmission; (LH fan shroud), (AT, 6 speed, opt MW7)
YUKON 15-16 Transmission; (LH radiator), (8 speed, opt M5U)
YUKON XL 1500 15-16 Transmission; (LH radiator), (8 speed, opt M5U)
How do I provide my VIN for programming?
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot ship the module until we have your VIN.
Is this a plug-and-play part?
Yes. Because we program the module to your specific VIN before shipping, it is a direct plug-and-play installation. No additional programming or trips to the dealer are required, which saves you significant time and money.
Will this fix my transmission problems?
This module is the definitive fix for issues directly caused by a failing TCM, such as those listed in the symptoms section. If your truck has underlying mechanical transmission problems, this part will not correct them. Proper diagnosis is always recommended.
What if I have an 8-speed transmission?
This specific part number, 24272004, is compatible with both 6-speed (MW7) and 8-speed (M5U) transmissions in various GM models, as shown in the fitment list. Providing your VIN ensures we load the exact correct software for your vehicle’s specific configuration.