Are you tired of harsh, unpredictable shifts and frustrating warning lights on your dash? A failing Transmission Control Module can make your reliable GM truck or SUV feel unsafe and unpredictable. This pre-programmed T42 TCM is the direct-fit, plug-and-play solution engineered to restore the smooth, dependable performance you need, getting you back on the road with confidence and without an expensive trip to the dealership.
Common Symptoms & Your Solution
If your vehicle is exhibiting any of the following issues, a faulty TCM is the likely culprit. This module is designed to be the definitive solution for problems such as:
- Harsh, erratic, or delayed gear shifts
- The vehicle being stuck in “limp mode” (usually 2nd or 3rd gear)
- An illuminated Check Engine Light or transmission warning light
- Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related codes
- Failure to upshift or downshift correctly, leading to poor acceleration and fuel economy
- Complete loss of communication with the transmission
Installing our programmed T42 TCM 24240449 directly addresses these issues by restoring precise electronic control over your transmission’s mechanical functions, ensuring every shift is smooth and timed perfectly.
Key Features & Tangible Benefits
- ✔ 100% Plug-and-Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. This critical step eliminates the need for expensive dealership programming, saving you time and money.
- ✔ Restored Drivability: By precisely managing shift points, torque converter lockup, and line pressure, this TCM restores the smooth, responsive feel your vehicle had when it was new.
- ✔ Lasting Reliability: Built to meet or exceed strict OEM specifications, this module is engineered for durability, ensuring a long-lasting solution to your transmission problems.
- ✔ Clear Your Dash Lights: This module is programmed with the latest GM software updates to resolve common electronic faults that trigger check engine and transmission warning lights.
- ✔ Guaranteed Performance: This unit is backed by our one-year replacement warranty.
From the Expert’s Bench:
In my 20+ years of diagnostics, I’ve seen countless drivers replace solenoids and sensors only to find the root cause was the TCM all along. The T42 module is the brain of your 4-speed automatic transmission. When it fails, it sends incorrect signals, causing perfectly good mechanical parts to behave erratically. The VIN programming is not just a convenience—it’s essential. It ensures the module has the correct software and calibrations for your specific vehicle’s weight, engine, and axle ratio. A generic, non-programmed module can often cause new, more complex issues. This programmed T42 TCM 24240449 is the right way to fix it once and for all.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
Absolutely not. We handle all the programming before it ships. This module is flashed with your vehicle’s unique VIN and the latest GM software, making it ready for installation right out of the box.
Is this part difficult to install?
For most DIYers with basic tools, this is a straightforward job. The TCM is typically located in the engine bay and can be replaced in under 30 minutes. Just remember to disconnect the battery before you begin.
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, we always recommend running a full diagnostic scan to check for other specific codes (like for shift solenoids) that might be present.
How do I know if this will fit my vehicle?
This module fits a wide range of GM vehicles from 2006-2014. Please refer to the detailed compatibility list on this page and match your vehicle’s year, make, and model. You can also match the service number on your original part to the numbers listed in our description.
What does the programmed T42 TCM 24240449 actually do?
The Transmission Control Module (TCM) acts as the computer for your automatic transmission. It processes data from various sensors to control shift timing, hydraulic pressure, and torque converter operation, ensuring optimal performance, fuel efficiency, and smooth operation.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old part, eliminating the hassle and expense of shipping it back.