Is your Chevrolet Trailblazer suffering from erratic shifting, getting stuck in gear, or flashing a check engine light?
A faulty Transmission Control Module (TCM) can turn a reliable SUV into a source of constant stress. When the computer that manages your transmission starts to fail, you’ll experience frustrating and potentially dangerous symptoms like harsh gear changes, delayed engagement, and even the vehicle going into “limp mode.” Don’t let a bad module sideline your vehicle. This is the reliable, straightforward solution to get your Trailblazer running right again.
Common Symptoms & Your Solution
If you’re experiencing any of the issues below, a failing TCM is the most likely culprit. This VIN-programmed unit is engineered to be the definitive fix for these problems, restoring communication and control over your transmission. This is the correct 2006-2009 Trailblazer 24239224 transmission control module to resolve:
- Harsh, erratic, or delayed shifting
- 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 codes
- Failure to upshift or downshift properly
- Poor fuel economy and transmission overheating
Features & Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your Trailblazer’s specific VIN. This eliminates the need for expensive dealership programming, allowing for a direct, hassle-free installation right out of the box.
- ✔ Restored Drivability: Regain precise control over gear shifts, torque converter lockup, and transmission diagnostics. This T42 TCM is engineered to restore the smooth, predictable performance your vehicle had when it was new.
- ✔ Dependable Performance: Constructed to strict OEM specifications to ensure durability and long-term reliability for your daily commute or demanding tasks. This unit is backed by our one-year replacement warranty.
- ✔ Guaranteed Fitment: A direct replacement for a wide range of GM service numbers, including 24252114, 24234503, and 24239224, ensuring perfect compatibility with your vehicle’s 4-speed automatic transmission.
Expert Insight: Why VIN Programming is Non-Negotiable
Many sellers offer non-programmed modules, but this just shifts the problem. Without being flashed to your vehicle’s specific VIN, the TCM won’t communicate correctly with the Engine Control Module (ECM) and other systems. This leads to persistent codes, poor performance, and another trip to a mechanic or dealer who has the expensive tools to program it. Our process handles this critical step for you. We load the latest GM software updates based on your VIN, ensuring this 2006-2009 Trailblazer 24239224 transmission control module works perfectly the moment you install it, saving you hundreds in potential labor and programming fees.
By replacing your old, failing part with this quality-tested unit, you are not just fixing a symptom; you are restoring the core logic of your vehicle’s drivetrain. This specific 2006-2009 Trailblazer 24239224 transmission control module is your key to resolving those persistent transmission headaches and getting back on the road with confidence.
Frequently Asked Questions
Do I need to program this module?
No. This Transmission Control Module comes fully pre-programmed to your vehicle’s VIN. It is ready for installation right out of the box, with no additional dealership visits or special tools required.
What are the main signs my TCM is failing?
The most common symptoms include harsh or unpredictable shifting, the vehicle getting stuck in one gear (limp mode), the check engine light coming on with transmission-related codes (like P0700), and a sudden drop in fuel efficiency.
Where is the TCM located on my 2006-2009 Trailblazer?
On the 2006-2009 Chevrolet Trailblazer, the Transmission Control Module is typically located in the engine compartment on the driver’s side (LH side).
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 that triggers a P0700, it’s essential to have the specific codes read to confirm the diagnosis. This part is designed to fix the internal failures that lead to these codes.
Is a core charge required for this part?
No, there is no core charge. You can keep your old part, avoiding the hassle and expense of shipping it back.
What other vehicles does this T42 TCM fit?
This module is compatible with a wide range of 2006-2014 GM vehicles, including the Tahoe, Silverado, Sierra, Yukon, Impala, and many others equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E.