Restore Flawless Shifting to Your Trailblazer
Is your 2006-2009 Chevrolet Trailblazer suffering from harsh shifts, getting stuck in gear, or throwing transmission-related codes? A faulty Transmission Control Module (TCM) is often the culprit behind these frustrating and potentially damaging issues. This genuine GM T42 TCM, service number 24256960, is the definitive solution to restore your vehicle’s performance and reliability. We pre-program each module to your vehicle’s specific VIN, ensuring it works perfectly right out of the box—no expensive trip to the dealership required. Get your Trailblazer driving smoothly again with a part you can trust.
Common Symptoms & Your Solution
If you’re experiencing any of the following, it’s a strong sign that your TCM needs replacement. This module is engineered to resolve these exact problems:
- Abrupt, jerky, or delayed gear shifts
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Check Engine Light or Transmission Warning Light is on
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift, leading to poor acceleration and fuel economy
- Complete loss of communication with the transmission
Installing this pre-programmed 2006-2009 Trailblazer transmission control module directly addresses the root cause, restoring precise electronic control over your transmission’s mechanical operations.
Features & Benefits
- ✔ Plug & Play Installation: Each module is expertly programmed to your vehicle’s VIN using the latest GM software. This eliminates the need for dealer programming, saving you time and hundreds of dollars.
- ✔ Restored Performance: Regain the smooth, responsive shifting your Trailblazer had from the factory. Proper communication between the engine and transmission improves drivability and fuel efficiency.
- ✔ Built to Last: Manufactured to strict OEM standards, this T42 TCM is designed for durability and long-term reliability, ensuring it can handle the demands of daily driving or utility use.
- ✔ Guaranteed Performance: This unit is backed by our one-year replacement warranty, giving you confidence in your repair.
- ✔ Broad Compatibility: While perfect for your Trailblazer, this module also interchanges with numerous part numbers (including 24252114, 24234503, 24242391) and fits a wide range of GM trucks and SUVs.
Expert Insight: The Power of Pre-Programming
Many people don’t realize that a new TCM is just a blank box. Without the correct software, it can’t communicate with your vehicle. The dealership charges a premium for this programming service. We handle that critical step for you. By programming the module to your VIN before we ship, we ensure that all the specific operational parameters for your Trailblazer’s engine, tire size, and gear ratios are loaded and ready. This is why our solution is truly plug-and-play and the preferred choice for both DIY mechanics and professional shops.
Don’t let a faulty TCM keep your reliable SUV off the road. This is the most effective and straightforward way to fix your transmission problems and restore your peace of mind. By choosing a pre-programmed 2006-2009 Trailblazer transmission control module, you are choosing a smarter, more efficient repair.
Frequently Asked Questions
What does the Transmission Control Module (TCM) do?
The TCM acts as the brain for your automatic transmission. It uses data from various sensors on the engine and transmission to control shift points, line pressure, and torque converter lockup, ensuring smooth and efficient operation.
Do I need to take my vehicle to a dealer after installing this part?
No. Because we program the module to your vehicle’s VIN before shipping, it is ready for installation right out of the box. This completely eliminates the need for any additional, costly programming at a dealership or repair shop.
Is this installation difficult for a DIY mechanic?
For most Trailblazer models, the installation is very straightforward. The TCM is typically located in the engine compartment on the driver’s side. The process involves disconnecting the battery, unplugging the old module’s electrical connectors, unbolting it, and installing the new one. It can often be completed in under 30 minutes with basic hand tools.
How do I provide my VIN for programming?
You will be prompted to enter your vehicle’s 17-digit VIN during the checkout process. Please double-check it for accuracy, as this is critical for correct programming.
Will this part 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 and related codes (like solenoid faults), you should ensure other potential issues (wiring, sensors) have been ruled out. A failing TCM is a very common cause for this code on these vehicles.
What if I have a different GM vehicle like a Silverado or Envoy?
This T42 TCM fits a very wide range of General Motors vehicles from 2006-2014 that use 4-speed automatic transmissions like the 4L60E and 4L65E. Please check the detailed fitment list on this page or contact us with your VIN to confirm compatibility for your specific model.