Restore Your Envoy XL’s Shifting Performance
Is your 2006 GMC Envoy XL suffering from erratic shifting, getting stuck in gear, or showing a persistent check engine light? These are classic signs of a failing Transmission Control Module (TCM). A faulty TCM can make your reliable SUV feel unpredictable and unsafe. This direct-fit T42 TCM is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN. This eliminates the need for expensive dealership visits and ensures a simple, plug-and-play installation to get you back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the issues below, this module is designed to be the fix. It directly addresses the root cause of common transmission problems in GM vehicles, restoring the smooth operation you depend on. Don’t let a bad module sideline your vehicle; this is the reliable repair for your 2006 GMC Envoy XL transmission control module.
- Harsh, jerky, or delayed gear shifts
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Transmission or Check Engine warning lights are on
- Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related codes
- Failure to upshift or downshift properly
- Poor fuel economy and potential transmission overheating
Features & Benefits
- ✔ VIN Programmed for Your Envoy XL: This module arrives ready for installation, pre-loaded with the latest GM software for your specific vehicle. No extra programming is required.
- ✔ Restores Smooth Operation: By precisely managing shift points and torque converter lockup, this TCM eliminates harsh shifting and restores the original factory feel.
- ✔ Solves Annoying Warning Lights: Designed to clear persistent transmission-related fault codes (DTCs) and turn off the check engine light for good.
- ✔ Plug-and-Play Installation: Simply disconnect the battery, swap the old module with this new one, and reconnect. Most owners can complete the job in under 30 minutes.
- ✔ OEM-Standard Quality: Built to meet or exceed original equipment specifications for durability and long-term reliability under all driving conditions.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
Many people wonder if they can just buy a used TCM from a junkyard. For these GM vehicles, the answer is a firm no. The TCM is the “brain” of your transmission, and it’s digitally tied to your vehicle’s unique Vehicle Identification Number (VIN). An unprogrammed or incorrectly programmed module will cause communication errors, leading to the same shifting problems or even preventing the vehicle from starting. Our pre-programming service saves you a trip to the dealer, ensuring the part communicates flawlessly with your Envoy XL’s engine computer and other systems right out of the box.
Frequently Asked Questions
Will this TCM fit my 2006 GMC Envoy XL?
Yes, this T42 TCM is the correct, specified part for the 2006 GMC Envoy XL with the 8-cylinder engine. It is also compatible with a wide range of other GM vehicles listed in the fitment data. Our VIN programming process ensures perfect compatibility.
Do I need a mechanic to install this?
Many of our customers with basic tools and mechanical knowledge install this part themselves. On the Envoy, the TCM is typically located in the LH (driver’s side) engine compartment, making it accessible. The key is that no special programming tools are needed, which is the most difficult part of the job.
Is any additional programming needed after installation?
No. The module is fully programmed to your VIN before it ships. It is ready for immediate installation and use. We recommend disconnecting the battery during the swap to allow the vehicle’s systems to reset and recognize the new part.
What is a core charge? Do I need to send my old part back?
There is no core charge for this part. You can keep your old module, so you don’t have to worry about the cost or hassle of shipping it back to us.
How do I know if the TCM is really the problem?
While symptoms like limp mode and codes like P0700 strongly point to the TCM, it’s always best to have your vehicle properly diagnosed. However, if you’re experiencing multiple of the symptoms listed above, a faulty 2006 GMC Envoy XL transmission control module is the most common cause.