Restore Your Envoy’s Shifting Performance
Is your 2006-2009 GMC Envoy suffering from harsh, erratic shifting, getting stuck in gear, or displaying a persistent check engine light? These are classic signs of a failing Transmission Control Module (TCM). A faulty TCM can make your vehicle unreliable and unsafe to drive, turning every trip into a stressful experience. This pre-programmed T42 TCM is the definitive solution, designed to restore the crisp, predictable shifting and dependable performance you expect from your vehicle. It arrives ready for a plug-and-play installation, getting you back on the road with confidence.
Common Symptoms & Your Solution
A failing TCM can manifest in various ways, often starting as a minor annoyance before becoming a major problem. If you’re experiencing any of the following, this module is the solution you need. This programmed 2006-2009 GMC Envoy transmission control module is engineered to correct these issues by restoring proper communication between your engine and transmission.
- Harsh or delayed gear engagement
- Slipping between gears or failure to shift
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Active Check Engine Light or Transmission Warning Light
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related codes
- Poor fuel economy and potential transmission overheating
Expert Insight: Why VIN Programming is Non-Negotiable
In modern vehicles like your GMC Envoy, the TCM isn’t just a simple computer; it’s the central command for your transmission, constantly communicating with the Engine Control Module (ECM) and other vehicle systems. Generic, non-programmed modules often fail to establish this critical communication, leading to persistent error codes and poor performance. Our process involves flashing the module with your vehicle’s specific VIN and the latest GM software updates. This ensures it works seamlessly with your Envoy’s unique configuration right out of the box, just like the original part from the factory, saving you a costly trip to the dealership for programming.
Features & Benefits
- ✔ VIN Programmed for Your Envoy: Arrives pre-flashed to your vehicle’s specific VIN number. This guarantees a perfect match and eliminates the need for expensive dealership programming, making for a true plug-and-play installation.
- ✔ Restores Smooth Operation: Directly addresses common transmission problems like harsh shifts, gear slipping, and limp mode, returning your vehicle’s performance to factory standards.
- ✔ Built for Durability: Constructed to meet or exceed strict OEM quality standards, ensuring reliable, long-term performance whether you’re commuting, towing, or hauling.
- ✔ Broad GM Compatibility: This T42 module is a direct replacement for multiple service numbers, including 24252114, 24234503, and 24240400, and fits a wide range of GM trucks, SUVs, and cars.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
- ✔ No Core Charge: Keep your old part without the hassle or expense of returning a core. This simplifies the repair process and saves you money.
By installing our programmed 2006-2009 GMC Envoy transmission control module, you’re not just replacing a part; you’re restoring the reliability and drivability of your vehicle. Don’t let a faulty TCM dictate your driving experience. Take control and fix the problem for good. This is the high-quality, dependable solution your vehicle deserves.
Frequently Asked Questions
What does a Transmission Control Module (TCM) do?
The TCM is the main computer for your automatic transmission. It receives data from various sensors on the engine and transmission to control shift points, torque converter lockup, and line pressure, ensuring smooth and efficient operation.
Is this TCM difficult to install?
For the GMC Envoy, the TCM is located in the LH (driver’s side) engine compartment, making it accessible. Installation is straightforward for a DIYer with basic tools and typically takes under 30 minutes. Since it comes pre-programmed, no special computer tools are required. Always disconnect the battery before starting.
Will this part 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 have the specific transmission codes read (e.g., P07xx) to confirm the diagnosis. A failing TCM is a very common cause for this code.
How does the VIN programming process work?
During checkout, you provide us with your vehicle’s 17-digit VIN. Our technicians use this information to load the correct GM-certified software and calibrations onto the module before it ships. This ensures it’s perfectly matched to your vehicle’s specific setup.
Do I need to return my old TCM?
No. We do not require you to send back your old part. There is no core charge associated with this purchase, saving you time and return shipping costs.
Is this compatible with other GM vehicles besides the Envoy?
Yes, this T42 TCM is compatible with a very wide range of GM vehicles from 2006-2014, including models like the Chevrolet Silverado, Tahoe, Impala; GMC Sierra and Yukon; Cadillac DTS, and many others using 4-speed automatic transmissions like the 4L60E and 4L65E. Please check the fitment list to confirm for your specific vehicle.