Restore Peak Performance to Your GMC Envoy’s Transmission
Is your GMC Envoy suffering from harsh, erratic shifting, getting stuck in gear, or flashing a check engine light? These are classic signs of a failing Transmission Control Module (TCM). Don’t let transmission troubles sideline your reliable SUV. This OEM-quality T42 TCM is the definitive, plug-and-play solution, pre-programmed specifically to your vehicle’s VIN for a hassle-free installation that gets you back on the road with confidence.
Common Symptoms & Your Solution
A faulty 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 remedy:
- Sudden, harsh, or delayed gear shifts
- The vehicle enters “limp mode,” stuck in 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 properly
- Noticeable decrease in fuel economy
Installing this pre-programmed 2006-2009 GMC Envoy transmission control module directly addresses the electronic source of these problems, restoring the precise, smooth operation you expect from your vehicle.
Key Features & Tangible Benefits
- โ VIN-Programmed for Your Envoy: We flash the module with the latest GM software using your vehicle’s specific VIN. This ensures perfect communication between the engine and transmission, eliminating the need for an expensive trip to the dealership for programming.
- โ Restores Smooth, Reliable Shifting: By precisely controlling shift points, line pressure, and torque converter lockup, this module brings back the smooth, predictable performance your transmission was designed for.
- โ Built to OEM Standards: Engineered for durability and longevity, this module meets or exceeds original equipment specifications, ensuring it can handle the demands of daily driving and tough conditions.
- โ Eliminates Fault Codes: A properly functioning TCM is crucial for clearing persistent transmission-related DTCs and keeping the check engine light off for good.
- โ Warranty Coverage: This unit is backed by our one-year replacement warranty.
From the Expert’s Bench: The T42 TCM is the brain of the workhorse 4L60E/4L70E series transmissions. Over time, constant heat cycles and engine vibration can compromise internal solder joints and electronic components, leading to the erratic behavior you’re seeing. Many shops will replace solenoids first, but often the root cause is the module itself. Opting for a pre-programmed unit is the most efficient repair. It takes the guesswork out of the equation and saves you hundreds in diagnostic and programming fees at a dealership. It’s the smart fix for the savvy owner.
By replacing your old, failing unit, you’re not just fixing a part; you’re restoring your confidence in your vehicle. This high-quality 2006-2009 GMC Envoy transmission control module is the most reliable and cost-effective way to solve your shifting problems and ensure your SUV serves you well for years to come. The installation is straightforward for a DIYer or any professional mechanic, typically taking less than 30 minutes. Regain control of your transmissionโorder yours today.
Frequently Asked Questions
Will this module fit my specific Envoy?
Yes, this module is a direct fit for 2006, 2007, 2008, and 2009 GMC Envoy models equipped with a compatible 4-speed automatic transmission. We program it to your VIN to ensure perfect compatibility.
Is this TCM difficult to install?
No, installation is quite straightforward. The TCM is located in the engine compartment (typically on the LH side). The process involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. No special tools are required.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault request from the TCM to the Engine Control Module (ECM) to turn on the check engine light. While this module often resolves the underlying issue causing the P0700, it’s essential to scan for other specific transmission codes (e.g., P0751, P0756) to confirm the TCM is the root cause.
How do I provide my VIN for programming?
After you place your order, you will be prompted to provide your vehicle’s 17-digit VIN. We cannot ship the part until we receive this information, as the programming is essential for the module to function in your vehicle.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep or dispose of your old module without any hassle or extra fees.