Restore Smooth, Reliable Shifting to Your GMC Envoy
Is your GMC Envoy suffering from harsh, erratic shifting, getting stuck in gear, or throwing transmission-related check engine lights? These are classic signs of a failing Transmission Control Module (TCM). Don’t let a faulty module sideline your reliable SUV. This OEM-quality T42 TCM is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play installation that gets you back on the road with confidence.
Common Symptoms & Your Solution
A failing TCM can cause a cascade of frustrating and potentially damaging issues. If you’re experiencing any of the following, this module is designed to be the direct-fit fix you need:
- Abrupt, harsh, or delayed gear shifts
- The vehicle enters “limp mode,” stuck in a single gear (often 2nd or 3rd)
- Illuminated Check Engine Light or Transmission Warning Light
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift properly, leading to poor acceleration and fuel economy
- Intermittent loss of communication with the transmission
By replacing your old unit with our precisely programmed 2006-2009 GMC Envoy transmission control module, you directly address the root cause of these problems, restoring the crisp, intelligent shifting your vehicle had from the factory.
Features & Benefits
- ✔ VIN-Programmed for Your Envoy: We program the module to your vehicle’s exact VIN before shipping. This eliminates the need for expensive dealership programming, saving you time and money. It’s ready to install right out of the box.
- ✔ Restores Transmission Performance: Corrects erratic shifting, torque converter lock-up issues, and communication errors, leading to a smoother ride and improved fuel efficiency.
- ✔ Plug-and-Play Installation: Designed for a straightforward installation, typically located in the LH engine compartment on the Envoy. Most DIY mechanics can complete the job in under 30 minutes.
- ✔ OEM-Standard Quality: Built to meet or exceed original equipment specifications, ensuring long-term durability and reliable operation under all driving conditions.
- ✔ This unit is backed by our one-year replacement warranty.
- ✔ No Core Charge Required: Keep your old part without the hassle or expense of returning a core.
From the Technician’s Bench
“We see these T42 modules fail frequently. Located in the engine bay, they’re constantly exposed to heat and vibration, which eventually takes a toll on the internal electronics. Many people consider a used module from a junkyard, but that’s a gamble—it might have the same issues or require costly programming. This pre-programmed 2006-2009 GMC Envoy transmission control module is the smart repair. It comes loaded with the latest GM software for your specific vehicle, ensuring all shift points and transmission parameters are set correctly from the moment you plug it in. It’s the most reliable way to get the job done right the first time.”
Frequently Asked Questions
Do I need to take my vehicle to the dealer after installation?
No. This module is delivered fully programmed to your vehicle’s VIN. The programming is handled by our technicians before shipment, so you can install it yourself and it will work immediately without any need for a dealership visit or expensive scan tools.
Where is the TCM located on my 2006-2009 GMC Envoy?
On the 2006-2009 GMC Envoy, the Transmission Control Module is typically found in the engine compartment on the left-hand (driver’s) side. Always disconnect the vehicle’s battery before starting the removal and installation process.
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 of a P0700, it’s essential to diagnose any other codes that are present. In many cases, replacing a faulty TCM will clear this and related codes after installation.
Is this a difficult part to install myself?
For most individuals with basic mechanical skills, this is a very straightforward installation. It involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. The entire process usually takes less than 30 minutes.
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 crucial for programming your new 2006-2009 GMC Envoy transmission control module correctly.