Is your 2006 Chevrolet TrailBlazer EXT or other GM vehicle suffering from frustrating and unpredictable transmission problems? Experiencing harsh, delayed shifts, or finding yourself stuck in limp mode can turn any drive into a stressful ordeal. It’s time to stop worrying about potential damage and expensive dealership visits. This VIN-programmed T42 Transmission Control Module is the direct, reliable solution to restore the smooth, precise shifting you depend on.
Common Symptoms & Your Solution
A failing transmission control module can manifest in numerous ways, often mimicking more severe mechanical failures. If you’re noticing any of the following issues, this part is engineered to be your definitive fix:
- Harsh, erratic, or delayed gear engagement
- The vehicle is stuck in a single gear (limp mode)
- 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 properly
- A noticeable decrease in fuel economy
- Intermittent or complete loss of communication with the transmission
By replacing your old unit with this pre-flashed Programmed T42 Transmission Control Module, you directly address the electronic brain of your transmission, resolving these issues and restoring factory performance.
Features & Benefits
- โ 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. Simply install it and drive.
- โ Restored Drivability: Regain the smooth, crisp shifts your vehicle had when it was new. Our module ensures precise control over shift points, torque converter lockup, and line pressure for optimal performance and longevity.
- โ Solve Annoying Warning Lights: This is the correct fix for a host of transmission-related DTCs. Installing our Programmed T42 Transmission Control Module helps clear persistent codes and keeps them from returning.
- โ Built to OEM Specifications: Engineered for durability and reliability, this module meets or exceeds original equipment standards, ensuring it can handle the demands of daily driving, towing, or hauling.
- โ Purchase with Confidence: This unit is backed by our one-year replacement warranty. We stand behind our parts so you can get back on the road with peace of mind.
- โ No Core Charge Required: Keep your old part without any surprise charges or the hassle of returning a core. The price you see is the price you pay.
Expert Insight: The Power of Pre-Programming
From our 20 years of experience, we know the biggest hurdle in replacing modern electronics isn’t the physical installationโit’s the software. In the past, you’d install a TCM only to have your vehicle remain undrivable until it was towed to a dealer for a costly programming session. Our VIN programming service changes everything. We flash the module with your vehicle’s unique data and the latest GM software updates before it ships. This means the Programmed T42 Transmission Control Module recognizes and communicates with your vehicle’s entire network perfectly from the moment you connect it. It’s the closest you can get to a truly simple, DIY-friendly solution for a complex electronic problem.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
Absolutely not. The main benefit of our module is that it arrives pre-programmed to your vehicle’s VIN. This makes it a true plug-and-play solution, saving you the time, cost, and hassle of a dealership visit.
Is installation difficult for a DIY mechanic?
Installation is generally straightforward for someone with basic mechanical skills. The TCM is typically located in the engine bay and can be replaced in under 30 minutes. Always remember to disconnect the vehicle’s battery before starting the job.
What happens if I don’t replace a failing TCM?
Ignoring a faulty TCM can lead to more severe issues. Continued erratic shifting can cause premature wear on internal transmission components like clutches and bands, potentially leading to a complete transmission failure that is far more expensive to fix.
How do I ensure this is the correct part for my vehicle?
Please use the detailed fitment list on this page to confirm compatibility with your vehicle’s year, make, and model. You can also match the part numbers listed in the description to your old unit. If you’re still unsure, our expert support team is here to help.
Will this fix my specific transmission error code?
This module is the definitive solution for a wide range of transmission-related DTCs, including the common P0700 code which indicates a general transmission fault. It directly resolves issues stemming from a faulty electronic controller.
Is there a core charge for this part?
No, we do not require a core return for this part. You can keep or dispose of your old module without any additional fees or hassle.