Restore Flawless Shifting to Your Trailblazer
Are you tired of dealing with harsh, erratic shifting, a check engine light that won’t go away, or your Trailblazer being stuck in ‘limp mode’? These are classic signs of a failing Transmission Control Module (TCM). This critical component is the brain of your automatic transmission, and when it falters, it can make your vehicle feel unreliable and unsafe. Put an end to the guesswork and restore your vehicle’s performance with our pre-programmed T42 Transmission Control Module, designed specifically as a direct-fit solution for your SUV.
Common Symptoms & Your Solution
A failing TCM can manifest in numerous ways, causing significant stress and driveability issues. If you’re experiencing any of the following, this module is the definitive solution you need:
- Abrupt, harsh, or delayed gear shifts
- Vehicle stuck in a single gear (limp mode)
- Illuminated Check Engine or Transmission warning lights
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift properly
- Noticeably decreased fuel economy
This expertly prepared 2006-2009 Trailblazer transmission control module arrives programmed to your vehicle’s specific VIN, ensuring it works seamlessly with your engine and existing components right out of the box.
Features & Benefits
- โ Plug & Play Installation: This module is professionally programmed to your vehicle’s unique VIN. This critical step eliminates the need for expensive and time-consuming trips to the dealership for programming, saving you hundreds of dollars.
- โ Restored Performance: By precisely managing shift points, torque converter lockup, and line pressure, this TCM restores the smooth, predictable shifting you expect from your Trailblazer.
- โ Durable & Reliable: Built to meet or exceed strict OEM specifications, this module is engineered for longevity, ensuring dependable operation for years to come.
- โ Peace of Mind: This unit is backed by our one-year replacement warranty. Drive with confidence knowing your purchase is protected.
- โ Perfect Fitment: Guaranteed to be the correct 2006-2009 Trailblazer transmission control module, it’s also a direct replacement for a wide range of GM part numbers, including 24242391, 24234503, and 24252114.
An Expert’s Insight
With over two decades of hands-on diagnostic experience, we’ve seen countless transmission problems that were mistakenly blamed on internal mechanical failure. In many cases, the root cause was a faulty TCM. A failing module sends incorrect signals, causing perfectly good solenoids and clutches to behave erratically. Replacing the TCM with a properly programmed unit like this one is often the most effective and economical repair, preventing unnecessary and costly transmission work. Our VIN-specific programming is not just a convenienceโit’s essential for ensuring all of your vehicle’s electronic systems communicate perfectly for optimal performance and reliability.
Don’t let a faulty TCM keep your vehicle off the road. Installing this part is a straightforward job that can typically be completed in under 30 minutes with basic hand tools. This is the most reliable way to fix your transmission issues and get your vehicle operating as it should. By choosing our pre-programmed 2006-2009 Trailblazer transmission control module, you are choosing a hassle-free, effective, and lasting repair.
Frequently Asked Questions
What is a T42 TCM and what does it do?
The T42 Transmission Control Module (TCM) is an electronic computer that acts as the ‘brain’ for your automatic transmission. It receives data from various sensors on the engine and vehicle, and uses that information to control shift timing, gear engagement, and torque converter operation for smooth and efficient driving.
Is this part difficult to install?
No, installation is generally straightforward for someone with basic mechanical skills. On most Trailblazer models, the TCM is located in the engine compartment (typically on the LH side) and can be swapped in under 30 minutes. Be sure to disconnect the battery before starting the repair.
Do I need to take my vehicle to a dealer after installation?
Absolutely not. The primary benefit of our service is that we program the module to your vehicle’s VIN before it ships. This means it is ready for immediate, plug-and-play installation with no further programming required, saving you time and dealership fees.
How do I know for sure that my TCM is the problem?
Common signs include erratic shifting, getting stuck in one gear (‘limp mode’), and specific diagnostic codes like P0700. While these symptoms strongly point to a failing TCM, it is always best to have a qualified technician perform a full diagnosis to confirm the issue before ordering.
What happens if I don’t provide my VIN when ordering?
Providing your VIN is essential for the programming process. If we do not receive a VIN, we cannot program the module, and it will not function correctly in your vehicle. Please be sure to enter your 17-digit VIN during checkout to ensure a successful repair.