Restore Peak Transmission Performance in Your GM Vehicle
Is your 2006-2009 GMC Envoy, Chevrolet Silverado, or other GM vehicle suffering from delayed shifts, getting stuck in gear, or displaying a check engine light? These are telltale signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth gear changes, managing torque converter clutch lockup, and communicating with the engine computer. When it fails, it can lead to poor performance, decreased fuel economy, and potentially catastrophic transmission damage.
This OEM-quality T42 Transmission Control Module, part number 24252114, is the definitive solution. It arrives pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN), ensuring a seamless, plug-and-play installation without the need for an expensive trip to the dealership for programming. Simply provide your VIN at checkout, and we handle the rest, loading the latest GM software updates for optimal function and reliability.
Expert Pro Tip
Before installing your new TCM, take a moment to inspect the main transmission wiring harness connector for any signs of corrosion, bent pins, or fluid contamination. A compromised connection can mimic TCM failure and cause persistent issues even with a new part. Cleaning the connector with a dedicated electronics cleaner can prevent future problems.
Symptoms of a Failing T42 TCM
- ✔ Harsh, erratic, or delayed gear shifting that makes driving uncomfortable and unpredictable.
- ✔ Vehicle entering “limp mode,” often getting stuck in 2nd or 3rd gear to prevent further damage.
- ✔ Illumination of the Check Engine Light or Transmission Warning Light on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs) stored in the system, such as P0700 (Transmission Control System Malfunction), P0750-P0758 (Shift Solenoid errors), or other transmission-related codes.
- ✔ A complete failure to shift up or down, leading to poor acceleration and high RPMs.
- ✔ Noticeable decrease in fuel efficiency as the transmission operates inefficiently.
- ✔ Intermittent electrical issues or a complete loss of communication with the module.
Why Choose Our Programmed 2006-2009 Envoy TCM?
Finding the right part is only half the battle; ensuring it works correctly out of the box is what truly matters. Our commitment to quality and convenience sets this 2006-2009 Envoy TCM apart. By programming the module to your VIN, we ensure it communicates flawlessly with your vehicle’s Engine Control Module (ECM) and other systems. This process corrects common software glitches and optimizes shift strategies based on the latest factory specifications for your specific model, whether it’s a GMC Sierra, Chevrolet Tahoe, or Buick LaCrosse.
This module is a direct replacement for a wide range of service numbers, including 24234503, 24230461, 24242391, and many more, making it a versatile solution for numerous GM applications equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. Built to strict OEM standards, it guarantees durability and long-term performance, backed by a one-year warranty for your peace of mind.
Frequently Asked Questions
What does a VIN-programmed TCM do?
A VIN-programmed TCM is loaded with the specific software and calibration files for your exact vehicle. This ensures it works perfectly with your engine, options, and tire size, providing optimal shift points and performance without needing any additional setup from a dealership.
Do I need to visit a dealer after installing this part?
No. Because this module is pre-programmed to your vehicle’s VIN, it is a true plug-and-play solution. You can install it yourself or have your local mechanic do it, saving you the time and expense of dealership programming.
Where is the TCM located on a 2008 GMC Envoy?
On the 2006-2009 GMC Envoy, the T42 TCM is typically located in the engine compartment on the left-hand (driver’s) side. Locations vary on other models, but common spots include next to the battery, under the air cleaner box, or on the RH side of the engine compartment.
Will this module fix a P0700 trouble code?
A P0700 code is a general fault code indicating that the TCM has detected a problem and has requested the Check Engine Light to be turned on. While a faulty TCM can cause a P0700, this code is often accompanied by other, more specific codes. Replacing a failed TCM is a common fix for this issue, especially if other symptoms are present.
Is there a core charge for this part?
No, there is no core charge required for this transmission control module. You can keep your old part without the hassle of returning it.