End Frustrating Shifting Problems in Your GM Vehicle
Tired of harsh, unpredictable shifting or your GM vehicle being stuck in limp mode? A failing Transmission Control Module (TCM) is often the culprit, turning your daily drive into a source of constant stress. This pre-programmed T42 TCM is the direct-fit, plug-and-play solution to restore the smooth, reliable performance you depend on, whether you’re in a work-ready Silverado or a family-hauling Tahoe. This is the definitive fix for your transmission woes, saving you a costly and time-consuming trip to the dealership.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty TCM is the likely cause. This module is engineered to resolve these problems directly:
- Erratic or Harsh Shifting: Abrupt, jerky gear changes that make driving uncomfortable.
- Stuck in Limp Mode: The vehicle refuses to shift out of 2nd or 3rd gear as a protective measure.
- Delayed Engagement: A noticeable pause when shifting from Park into Drive or Reverse.
- Warning Lights: A persistent Check Engine Light or Transmission Warning Light on your dash.
- Diagnostic Trouble Codes (DTCs): Specifically codes like P0700 (Transmission Control System Malfunction), P0750-P0758 (Shift Solenoid Faults), and other transmission-related errors.
Installing our Programmed T42 Transmission Control Module is the most effective way to permanently fix these issues and get your vehicle operating correctly again.
Features & Tangible Benefits
- ✔ 100% Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. This means no expensive trips to the dealership for programming—simply install it and restore your transmission’s functionality.
- ✔ Restores Factory Shift Quality: Engineered to OEM specifications, this T42 TCM eliminates harsh shifting, gear slipping, and delayed engagement, bringing back the smooth, responsive feel your vehicle had when it was new.
- ✔ Clears Persistent Trouble Codes: Directly addresses common transmission-related DTCs, helping you turn off that frustrating check engine light and pass inspections.
- ✔ Broad GM Compatibility: Serves as a direct replacement for numerous part numbers including 24252114, 24234503, 24230461, and 24235340, ensuring a perfect fit for a wide range of GM trucks, SUVs, and cars.
- ✔ Reliable and Durable: Built with quality components to withstand the demands of daily driving and harsh conditions, ensuring long-lasting performance and dependability.
- ✔ Backed by Our Guarantee: This unit is backed by our one-year replacement warranty.
A Word From Our Master Technician: For over 20 years, I’ve seen drivers replace solenoids and even entire transmissions, only to find the root cause was a faulty T42 TCM. The electronics inside these modules are sensitive and can fail over time, causing erratic behavior that mimics mechanical failure. The biggest hurdle used to be the mandatory dealership programming. Our VIN programming service for this Programmed T42 Transmission Control Module removes that barrier completely, saving you hundreds of dollars and significant downtime. It’s the most effective and efficient way to get your GM vehicle shifting correctly again.
By providing your VIN at checkout, you ensure that the Programmed T42 Transmission Control Module you receive is perfectly matched to your vehicle’s factory settings. This guarantees optimal performance for everything from engine idle to torque converter lockup, restoring fuel efficiency and driveability.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. We program the module to your vehicle’s VIN before shipping. It is ready for installation right out of the box, making it a true plug-and-play solution.
What is a T42 TCM and what does it do?
The T42 is a specific type of Transmission Control Module (TCM) used by General Motors. It acts as the computer for your automatic transmission, controlling shift points, torque converter lockup, and line pressure for smooth and efficient operation.
Will this fix my ‘limp mode’ issue?
In many cases, yes. A failing TCM is a very common cause of a vehicle entering “limp mode,” where it gets stuck in a single gear (usually 2nd or 3rd) to prevent further damage. This module is designed to resolve the electronic faults that trigger this condition.
Is installation difficult?
For someone with basic mechanical skills, installation is straightforward. The module is typically located in the engine bay and is easy to access. Disconnect the battery, unplug the old module, plug in the new one, and reconnect the battery. It usually takes less than 30 minutes.
What if I order the wrong part?
This module fits a very wide range of GM vehicles listed in our fitment data. To ensure a perfect fit, please provide your vehicle’s VIN at checkout for programming. If you have any doubts, contact our expert support team before ordering.
Do I need to send my old part back?
No, there is no core charge for this module. You can keep or dispose of your old part as you see fit, saving you hassle and return shipping costs.