Restore Peak Transmission Performance in Your GM Vehicle
Is your Chevrolet, GMC, Buick, or Cadillac suffering from frustrating and unpredictable transmission problems? Harsh shifting, delayed gear engagement, or a check engine light that won’t go away are classic signs of a failing Transmission Control Module (TCM). Get your truck, SUV, or sedan back on the road quickly and confidently with our professionally VIN-programmed GM T42 Transmission Control Module. This is a direct, OEM-quality solution designed to eliminate guesswork and costly dealership visits.
Common Symptoms & Your Solution
A faulty TCM can make your vehicle feel unreliable and unsafe. If you’re experiencing any of the following issues, this pre-programmed module is the definitive fix:
- Abrupt, harsh, or erratic gear shifts
- The vehicle is stuck in “limp mode” (usually 2nd or 3rd gear)
- Check Engine Light or Transmission Warning Light is on
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift properly
- Noticeably poor fuel economy and transmission overheating
Installing our GM T42 Transmission Control Module resolves these issues by restoring the precise electronic communication between your engine and transmission, ensuring smooth, efficient operation just like it was designed to.
Features & Benefits
- โ Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. This critical step ensures perfect compatibility and function right out of the box, saving you from a mandatory, expensive programming session at a dealership.
- โ Restores Smooth Shifting: By precisely managing shift points, line pressure, and torque converter lockup, this TCM eliminates harsh shifting and gear hunting, providing a comfortable and predictable driving experience.
- โ Clears Persistent Codes: Engineered with the latest GM software updates to resolve common transmission-related DTCs and keep your dashboard free of warning lights.
- โ OEM-Standard Quality: Built to meet or exceed original equipment specifications for durability and performance, ensuring it can handle the demands of a work truck like a Sierra or a family SUV like a Tahoe.
- โ Broad Compatibility: A direct replacement for a wide range of part numbers (including 24252114, 24234503, 24230461) and fits popular 4-speed automatic transmissions like the 4L60E, 4L65E, 4L70E, and 4L80E.
- โ Guaranteed Performance: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of VIN Programming
Many sellers offer non-programmed modules, which seems like a deal until you realize the vehicle won’t start or shift correctly without a separate, costly trip to a mechanic with specialized GM tools. That can add hundreds to your repair bill. Our process handles this for you. By programming the module to your VIN before shipping, we ensure the unit has the correct software and calibrations for your vehicle’s specific configuration. This makes the installation a true do-it-yourself job and is the single most important factor for a successful repair.
Frequently Asked Questions
Do I need to program this module after I receive it?
No. This GM T42 Transmission Control Module is delivered fully pre-programmed to your vehicle’s VIN. It is ready for installation right out of the box, with no additional programming or dealership visits required.
Will this 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 of a P0700, it’s essential to diagnose any other codes that appear alongside it. In most cases where the TCM itself is faulty, replacing it with our programmed unit will clear the code after installation.
How difficult is the installation?
For most DIYers with basic tools, the installation is straightforward and typically takes less than 30 minutes. The module is usually located in an accessible spot in the engine bay. Always disconnect the battery before starting work. After installation, use a basic scan tool to clear any stored codes.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old part without the hassle of needing to return it, simplifying your repair process.
How do I know if this fits my exact vehicle?
This module fits a wide range of 2006-2014 GM vehicles. Please use the vehicle compatibility tool on this page and verify that your original part number is on our interchange list to ensure a perfect fit for your car, truck, or SUV.