End Frustrating Shifting Problems and Get Back on the Road
Is your Chevrolet Trailblazer, Silverado, or other GM vehicle suffering from harsh, erratic shifts, getting stuck in gear, or displaying a persistent check engine light? A failing transmission control module (TCM) can sideline your truck or SUV, causing daily stress and uncertainty about your vehicle’s reliability. This professionally programmed T42 Transmission Control Module is the definitive, direct-fit solution designed to restore your transmission’s precise performance and get you back behind the wheel with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the issues below, a failing TCM is the most likely culprit. This module is engineered to resolve these exact problems:
- Harsh or Delayed Shifting: Abrupt gear changes, banging into gear, or a noticeable lag when accelerating.
- Stuck in Limp Mode: The vehicle refuses to shift out of 2nd or 3rd gear as a protective measure.
- Warning Lights: A steady Check Engine Light or Transmission Warning Light on your dash.
- Diagnostic Trouble Codes (DTCs): Common codes like P0700 (Transmission Control System Malfunction) or various solenoid-specific codes (e.g., P0750-P0770).
- Poor Performance & Fuel Economy: A struggling transmission can lead to sluggish acceleration and a significant drop in gas mileage.
Installing this Programmed T42 Transmission Control Module directly addresses the electronic brain of your transmission, providing a fresh, reliable component that eliminates these frustrating and potentially damaging symptoms.
Features & Tangible Benefits
- ✔ Ready to Install, No Dealer Needed: Your module arrives pre-programmed to your vehicle’s specific VIN. This crucial step ensures perfect communication between the TCM and your vehicle’s other systems for a true plug-and-play installation, saving you hundreds in dealership programming fees.
- ✔ Restore Smooth, Decisive Shifting: By precisely controlling shift points, line pressure, and torque converter lockup, this module brings back the smooth, predictable operation you expect from your vehicle.
- ✔ Built to OEM Standards: Manufactured to meet or exceed original equipment specifications, ensuring dependable performance and long-term durability for your daily driver or work truck.
- ✔ Guaranteed Compatibility: A direct replacement for a wide range of part numbers, including 24252114, 24234503, 24235754, and more, ensuring a perfect fit for dozens of GM models.
- ✔ No Core Charge, No Hassle: Keep your old part. We don’t require a core return, simplifying your repair process and eliminating extra shipping costs or surprise charges.
- ✔ Protected Investment: This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
Many vehicle owners purchase a standard TCM online, only to find their vehicle won’t start or shift correctly after installation. This is because a non-programmed module cannot communicate with the rest of the vehicle’s electronics. It forces an unexpected, expensive trip to a dealership for programming. Our process eliminates that critical point of failure. By flashing the module with your specific VIN and the latest GM software updates before it ships, we ensure it integrates seamlessly, just like the original part from the factory. This is the key to a successful, one-time repair.
Frequently Asked Questions
What is a T42 TCM and what does it do?
The T42 Transmission Control Module (TCM) is a small computer that acts as the electronic brain for your automatic transmission. It receives data from various sensors on the engine and vehicle, and uses that information to control exactly when and how the transmission shifts gears, ensuring optimal performance, fuel efficiency, and smoothness.
Is this part truly “plug-and-play”?
Yes. Because we pre-program the module to your vehicle’s unique VIN before shipping, it is ready for installation right out of the box. Simply disconnect the battery, swap the old module with the new one, reconnect the battery, and you’re ready to go. No additional programming or dealer visits are required.
How do I provide my vehicle’s VIN?
You can typically enter your 17-digit Vehicle Identification Number (VIN) during the checkout process. You can find your VIN on your vehicle’s registration, insurance card, or on a small plate on the driver’s side dashboard, visible through the windshield.
Will this clear my check engine light?
This module will fix the underlying problem that is causing the transmission-related trouble codes and check engine light. After installation, the codes may clear on their own after a few drive cycles, or you can use a basic OBD2 scan tool to clear them immediately.
What tools are needed for installation?
Installation is typically very straightforward and requires only basic hand tools, such as a socket set or wrench to disconnect the battery terminal and unbolt the module. The entire process can often be completed in under 30 minutes.
Do I need to return my old TCM?
No. This part is sold without a core charge, meaning you are not required to send your old, faulty module back to us. This saves you time and the hassle of return shipping.