Restore Flawless Shifting to Your Silverado 1500
If your 2007-2013 Silverado 1500 is suffering from erratic shifting, getting stuck in gear, or throwing transmission codes, the problem is often a failing Transmission Control Module (TCM). As the electronic brain of your automatic transmission, the T42 TCM dictates every gear change, manages torque converter lockup, and monitors system health. When it fails, it can make your reliable truck feel unpredictable and unsafe. This replacement T42 TCM, part number 24241806, is the definitive solution, arriving pre-programmed to your truck’s specific VIN for a true plug-and-play repair.
Case Study: A Tricky Diagnosis
I had a 2011 Silverado 1500 in my bay last month that was a real head-scratcher. The owner complained of intermittent, violent 1-2 shifts, but only after the truck was fully warmed up. No consistent check engine light, just a stored P0700 (Transmission Control System Malfunction) code. We checked fluid levels, solenoids, and wiring harnesses—everything looked fine. On a hunch, we swapped in a VIN-programmed T42 module. The difference was immediate. The root cause wasn’t a mechanical fault but the original TCM’s failing internal logic under heat. This is a classic failure I’ve seen on hundreds of these GM trucks, and this module is the go-to fix.
Is Your Silverado Exhibiting These Transmission Problems?
- ✔ Harsh, banging shifts or delayed gear engagement.
- ✔ Vehicle is stuck in “limp mode,” often in 2nd or 3rd gear.
- ✔ The check engine light is on with transmission-related Diagnostic Trouble Codes (DTCs) like P0700, P0750, P0753, P0758, etc.
- ✔ Inability to upshift or downshift, leading to poor acceleration and fuel economy.
- ✔ A complete loss of communication with the transmission module, causing a no-start or no-shift condition.
- ✔ Unexplained drops out of gear or slipping between shifts.
The Solution: Key Features of This Pre-Programmed TCM
This isn’t just a replacement part; it’s a comprehensive fix designed to get your truck back to factory performance without the hassle. We handle the complex part so you can handle the installation with confidence.
- ✔ VIN-Specific Programming: We flash the module with the latest GM software calibrated specifically to your truck’s VIN. This eliminates the need for an expensive trip to the dealership for programming and ensures perfect communication between the engine and transmission.
- ✔ OEM-Standard Build Quality: Constructed to meet or exceed original equipment specifications, this module is built for longevity and can withstand the demanding conditions of daily driving or heavy-duty work.
- ✔ Direct-Fit Replacement: This module is a direct replacement for a wide range of GM part numbers, including 24241806, 24252114, 24234503, and many more, ensuring broad compatibility.
- ✔ No Core Charge: Keep your old part. There’s no need to worry about the cost or inconvenience of returning a core.
Your Quick-Start Installation Guide
- ✔ Safety First: Before you begin, disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help reset the vehicle’s electronic systems.
- ✔ Locate the TCM: On most 2007-2013 Silverado 1500 models, the TCM is located in the engine bay, typically right next to the battery. It’s a silver box with multiple wiring harness connectors.
- ✔ Disconnect and Remove: Carefully unclip the wiring harness connectors. Press the release tabs firmly. Then, unbolt the module from its mounting bracket. It’s usually held in by a few 10mm bolts.
- ✔ Install the New Module: Mount the new, pre-programmed TCM in the same location and secure it with the bolts. Reconnect the wiring harnesses, ensuring they click securely into place.
- ✔ Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s always best practice to use a basic OBD2 scan tool to clear any lingering fault codes from the system’s memory. Start the truck and enjoy smooth shifting!
Verified Fitment for Your GM Vehicle
While this is the correct part for a 2007-2013 Silverado 1500 TCM repair, it also fits a wide variety of other General Motors vehicles. Please confirm your model and year from the list below. The location may vary by model.
Fits: Chevrolet Silverado, Tahoe, Suburban, Avalanche, Express, Colorado, Impala, Cobalt; GMC Sierra, Yukon, Savana, Canyon; Cadillac DTS; Buick Lucerne, LaCrosse; Pontiac G6; Hummer H3, and more from 2006-2014. Please verify your specific model and year against the detailed fitment list provided on this page.
Frequently Asked Questions
Do I need to take my truck to the dealership after installing this?
No. This Transmission Control Module comes fully programmed to your vehicle’s VIN. It is ready for installation right out of the box, saving you time and money on dealer programming fees.
Is this part difficult to install for a DIYer?
Not at all. For most models like the Silverado 1500, the TCM is easily accessible in the engine bay. With basic hand tools, the swap typically takes less than 30 minutes.
What is a T42 TCM?
The T42 is the specific hardware platform used by General Motors for the Transmission Control Module in many of its 4-speed automatic transmissions, such as the 4L60E, 4L65E, and 4L70E, during this era.
Do I need to perform a transmission relearn procedure?
While the module is pre-programmed, the transmission will perform its own adaptive learning as you drive. For most owners, simply driving normally for a few days will allow the system to fine-tune shift points for optimal performance.
What if I order the wrong part?
We’re here to help! Please verify your vehicle in our fitment list or contact our expert support team with your VIN before ordering. We’ll ensure you get the correct module for your truck.