Restore Smooth, Reliable Shifting to Your GM Vehicle
Is your 2006 GMC Envoy XL suffering from harsh shifting, getting stuck in gear, or throwing transmission-related check engine lights? These are classic signs of a failing Transmission Control Module (TCM). This critical component is the brain of your automatic transmission, and when it malfunctions, it can make your vehicle unreliable and frustrating to drive. Put an end to the guesswork and expensive dealership visits with our pre-programmed T42 TCM, the definitive solution for restoring your vehicle’s performance and your peace of mind.
Common Symptoms & Your Solution
A faulty TCM can manifest in several ways, often getting progressively worse. If you’re experiencing any of the following, this module is the solution you need:
- Harsh, erratic, or delayed gear shifts
- Vehicle stuck in “limp mode” (typically 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 codes
- Failure to upshift or downshift properly
- Poor fuel economy and potential transmission overheating
This module is engineered to resolve these issues by replacing the faulty original unit. Because it arrives programmed specifically to your vehicle’s VIN, it correctly communicates with the engine computer and transmission components right out of the box, ensuring a lasting and effective repair.
Features & Benefits
- ✔ 100% Plug-and-Play Installation: This module is professionally programmed to your vehicle’s specific VIN number before shipping. This eliminates the need for expensive dealership programming, saving you time and money.
- ✔ Restores Factory Performance: By managing shift points, torque converter lockup, and line pressure with precision, this TCM restores the smooth, predictable operation you expect from your vehicle.
- ✔ Solves Common DTCs: Expertly programmed with the latest GM software updates to resolve persistent transmission codes and electrical faults tied to the original module.
- ✔ No Core Charge Required: Keep your old part without the hassle or expense of returning a core. The process is simple and straightforward.
- ✔ Guaranteed Quality: This unit is backed by our one-year replacement warranty. Drive with confidence knowing your purchase is protected.
Expert Insight: The Smart Fix for GM Transmissions
As a technician, I’ve seen countless GM trucks and SUVs from this era come in with frustrating shifting problems. The T42 TCM is a known failure point. Owners often replace solenoids or fluid, only to find the problem persists. The real issue is often the electronic module itself. Opting for a pre-programmed 2006 GMC Envoy XL transmission control module like this one is the most efficient repair. It bypasses the dealership’s high labor costs for diagnostics and programming, allowing a confident DIYer or any independent shop to complete the job in under an hour. It’s the direct path to getting your truck or SUV back to work reliably.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. The primary benefit of this module is that it comes pre-programmed to your vehicle’s VIN. You can install it yourself or have your mechanic install it without needing any additional programming or special tools from a dealership.
Where is the TCM located on my 2006 GMC Envoy XL?
On the 2006 GMC Envoy XL, the transmission control module is typically located in the engine compartment on the driver’s side (LH). Always disconnect the vehicle’s battery before beginning the removal and installation process for safety.
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 important to use a scanner to read the specific transmission codes (like P0750, P0751, etc.) to confirm the diagnosis. A failing TCM is a very common cause.
Is this a difficult part to replace?
For most individuals with basic mechanical skills, this is a straightforward replacement. It typically involves disconnecting the battery, unplugging the electrical connectors, and unbolting the module. The entire process usually takes less than 30 minutes. The new 2006 GMC Envoy XL transmission control module bolts in just like the original.
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. This is a critical step to ensure the module we send you is a perfect match for your vehicle’s specific configuration. Please double-check the VIN for accuracy before submitting.