Restore Peak Performance to Your GM Vehicle
Is your 2006-2009 Chevrolet Trailblazer, or another compatible GM vehicle, suffering from erratic shifting, delayed gear engagement, or a persistent check engine light? These are classic symptoms of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating shift points, managing torque converter lockup, and ensuring smooth, efficient operation. When it fails, it can lead to poor performance, decreased fuel economy, and even leave you stranded in limp mode.
This genuine OEM-quality T42 Transmission Control Module, service number 24235340, is the definitive solution. We pre-program each module to your vehicle’s specific VIN, ensuring it arrives ready for a seamless, plug-and-play installation. This critical step loads the latest GM software updates and vehicle-specific parameters, eliminating the need for an expensive trip to the dealership for programming. Restore the precise, factory-new shifting your vehicle once had.
Solving Issues with Your Trailblazer Transmission Module
A faulty Trailblazer Transmission Module can be frustrating, often presenting as intermittent issues that are difficult to diagnose. Internal electronic components can degrade over time due to heat and vibration, leading to incorrect signals being sent to the transmission solenoids. This results in the harsh shifts and performance issues you’re experiencing. By replacing your old unit with our professionally programmed T42 TCM, you are not just fixing a part; you are restoring the core logic of your vehicle’s drivetrain. This module is engineered to meet or exceed original GM specifications, providing a reliable and long-lasting repair for your truck or SUV.
Common Symptoms of a Failing TCM
- ✔ Harsh, erratic, or delayed gear shifting.
- ✔ Vehicle gets stuck in a single gear (limp mode).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults are present.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ The transmission seems to slip between gears or fails to engage properly from a stop.
- ✔ Complete loss of communication with the transmission module.
Broad Compatibility and Simple Installation
While this is a perfect fit for the 2006-2009 Chevrolet Trailblazer, this T42 TCM is also compatible with a wide range of GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. This includes popular models like the Chevrolet Silverado, Tahoe, GMC Sierra, Yukon, Cadillac DTS, and Pontiac G6. Installation is straightforward for a DIY mechanic, typically taking less than 30 minutes. The module is located in the engine compartment, often near the battery, on a strut tower, or under the air cleaner box. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one. With our VIN programming, your vehicle will be back to optimal performance in no time.
Frequently Asked Questions
What is VIN programming and why is it important?
VIN programming is the process of loading your vehicle’s unique Vehicle Identification Number and its corresponding software into the module. This ensures the TCM communicates perfectly with your vehicle’s engine computer and other systems, controlling shift patterns and transmission functions exactly as the manufacturer intended. It makes the part truly plug-and-play.
Is this a difficult part to install myself?
For most individuals with basic mechanical skills, this is a very manageable job. It typically involves disconnecting the battery, locating the module in the engine bay, and swapping it out with basic hand tools. Since our modules are pre-programmed, no complex software or dealership tools are required.
Will this module fix my specific transmission error codes?
This module is a direct solution for failures within the TCM itself, which commonly cause codes like P0700 (Transmission Control System Malfunction) and various solenoid circuit codes (P0750-P0770 range). If your diagnostic points to a faulty module, this part is designed to resolve those issues.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep your old module, which saves you the time and hassle of packaging and shipping a return.
What kind of warranty is included?
This Transmission Control Module comes with a one-year warranty, giving you peace of mind and confidence in the quality and durability of your purchase.