Is your GMC Envoy suffering from harsh, erratic shifting or stuck in limp mode? A failing Transmission Control Module (TCM) is often the culprit, causing frustrating and unpredictable driving behavior. This T42 TCM, service number 24255280, is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN. This eliminates the need for expensive dealership visits and ensures your SUV gets back to the smooth, reliable performance you depend on. Restore your confidence on the road with a module designed to work flawlessly right out of the box.
Common Symptoms & Your Solution
A faulty TCM can manifest in several ways, turning your daily drive into a constant source of stress. If you’re experiencing any of the following, it’s a clear sign your module needs attention. This programmed Envoy Transmission Control Module is engineered to resolve these exact issues:
- Harsh, delayed, or slipping gear changes
- Vehicle is stuck in a single gear (limp mode)
- Check Engine Light or Transmission Warning Light is on
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Complete failure to upshift or downshift
- Poor fuel economy and potential transmission overheating
Features & Benefits
- โ Plug & Play Installation: This module is expertly programmed to your vehicle’s VIN using the latest GM software updates. This critical step ensures perfect communication between the transmission and the engine, restoring optimal shift patterns and performance without any additional programming.
- โ Restored Drivability: By precisely managing shift points, torque converter lockup, and line pressure, this TCM eliminates harsh engagements and hunting for gears, providing a smooth and responsive driving experience.
- โ Cost-Effective Repair: Avoid the high costs and scheduling hassles of a dealership service department. Our VIN programming gives you a ready-to-install part, saving you both time and money.
- โ Built to OEM Standards: Engineered for durability and reliability, this module meets or exceeds original equipment specifications, ensuring it can handle the demands of your Envoy for years to come.
- โ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
An Expert’s Insight on VIN Programming
As a technician with over two decades of experience, I can’t overstate the importance of VIN-specific programming for a modern Envoy Transmission Control Module. In the past, you could often swap modules between similar vehicles. Today, that’s impossible. The TCM is integrated with the vehicle’s entire network, including the engine controller and anti-theft system. A non-programmed or incorrectly programmed module won’t just shift poorlyโit can prevent the vehicle from starting at all. Our process ensures the module is a perfect digital match for your Envoy, just as it was from the factory.
Frequently Asked Questions
What does a Transmission Control Module do?
The TCM acts as the brain for your automatic transmission. It uses data from various sensors on the engine and transmission to control exactly when and how the vehicle shifts gears, ensuring smooth operation, optimal performance, and fuel efficiency.
Is this module difficult to install?
For the GMC Envoy, the TCM is located in the engine compartment on the driver’s side and is generally accessible. Installation typically takes under 30 minutes for someone with basic mechanical skills. Simply disconnect the battery, unplug the old module’s electrical connectors, unbolt it, and install the new one in its place. Since it’s pre-programmed, no special tools are required.
Will this TCM fix my specific error codes?
This module is designed to correct a wide range of transmission-related DTCs, including the common P0700 (Transmission Control System Malfunction) and various solenoid codes. If your diagnostics point to a faulty Envoy Transmission Control Module, this part is the correct solution.
How does the VIN programming process work?
During checkout, you will provide us with your vehicle’s 17-digit VIN. Our technicians use this number to access the latest GM-certified software for your specific vehicle and flash it onto the module before it ships. This ensures it’s a perfect match for your Envoy’s configuration.
Do I need to return my old TCM?
No, there is no core charge for this part. You can keep or dispose of your old module, making the replacement process simple and hassle-free.