Restore Peak Transmission Performance in Your GM Vehicle
Is your 2007 Chevrolet Silverado 2500 or other GM vehicle suffering from erratic shifting, getting stuck in gear, or throwing transmission-related error codes? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth gear changes, managing torque converter lockup, and ensuring overall drivetrain efficiency. When it fails, it can lead to a frustrating and potentially unsafe driving experience. This genuine quality GM T42 TCM, service number 24239926, is the definitive solution to restore your transmission’s factory performance and reliability.
From the Diagnostic Bay
We had a 2007 Sierra with the 6.0L come in with a P0700 code and what the owner described as ‘violent’ shifting from 1st to 2nd. He had already replaced two shift solenoids with no improvement. We suspected the TCM, as the T42 modules can develop internal faults that send incorrect signals to perfectly good solenoids. After installing one of our VIN-programmed modules, we cleared the codes and took it for a test drive. The shifts were buttery smooth, just like it left the factory. It’s a reminder that chasing individual codes can be a dead end when the controller itself is the root cause.
Common Symptoms of a Failing T42 TCM
- ✔ Harsh, delayed, or unpredictable gear shifts.
- ✔ Vehicle enters ‘limp mode,’ often stuck in 2nd or 3rd gear.
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-specific codes are present.
- ✔ The transmission refuses to upshift or downshift properly.
- ✔ A noticeable decrease in fuel economy.
- ✔ Complete loss of communication with the transmission module.
Why Choose Our Programmed 2007 Silverado 2500 TCM?
This isn’t just a replacement part; it’s a complete, plug-and-play solution. The biggest hurdle when replacing a modern vehicle module is the need for expensive dealership programming. We eliminate that step entirely. By providing your vehicle’s VIN at checkout, we program the module with the latest GM software specific to your truck. This ensures that it communicates flawlessly with your engine computer and other vehicle systems right out of the box, restoring optimal shift points and transmission behavior without any additional hassle.
Key Features & Benefits
- ✔ VIN Programmed for Your Vehicle: Arrives ready for installation with no need for a trip to the dealer. This saves you time and hundreds of dollars in programming fees.
- ✔ Restores Smooth Operation: Corrects issues like harsh shifting, slipping, and delayed engagement by restoring precise electronic control over your transmission’s hydraulics.
- ✔ OEM-Standard Quality: Built to meet or exceed original equipment specifications for durability and performance, ensuring a long-lasting repair. Backed by a one-year warranty.
- ✔ Broad Compatibility: A direct replacement for a wide range of GM vehicles from 2006-2014 equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E.
- ✔ No Core Charge: Keep your old part. We don’t require you to send the faulty module back, simplifying the process for you.
Installation is straightforward for the DIY mechanic or professional technician. The TCM is typically located in the engine bay—often next to the battery, on a strut tower, or under the air cleaner box. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Once reconnected, use a standard scan tool to clear any stored DTCs. Get your 2007 Silverado 2500 TCM back in top condition and enjoy the smooth, reliable performance you expect.
Frequently Asked Questions
What does this T42 Transmission Control Module do?
The T42 TCM acts as the central computer for your automatic transmission. It processes data from various sensors to control shift solenoids, regulate line pressure, and manage the torque converter clutch, ensuring smooth and efficient gear changes.
Is professional installation required?
While the physical installation is simple (often under 30 minutes), it’s recommended for individuals comfortable working on vehicles. The key is that our pre-programming eliminates the need for specialized dealer tools, making it a feasible DIY project for many.
Why is VIN programming so important for a TCM?
VIN programming loads the correct software and calibration files for your specific vehicle’s engine, tire size, and gear ratios. Without it, a new TCM won’t communicate correctly with the rest of the vehicle, leading to persistent shifting problems or even a no-start condition.
Will this module fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause that triggers a P0700 (like an internal short), it’s essential to diagnose any other specific codes that accompany it. In many cases, a faulty TCM is the primary culprit.
Do I need to send my old part back?
No. This part is sold without a core charge. You can keep or dispose of your old module without the hassle of returning it, saving you time and shipping costs.