Is Your Yukon XL Shifting Erratically? Restore Smooth, Reliable Performance.
A faulty transmission control module can turn your dependable family SUV into a source of daily stress. If you’re experiencing harsh shifting, delayed gear engagement, or your 2007-2008 GMC Yukon XL 1500 is stuck in limp mode, it’s a clear sign that the brain of your transmission is failing. This T42 Transmission Control Module is the definitive, plug-and-play solution, pre-programmed to your vehicle’s specific VIN to get you back on the road with confidence.
Common Symptoms & Your Solution
A failing TCM doesn’t just feel wrong—it can cause further damage if ignored. This module is engineered to resolve the most common issues, restoring factory performance and preventing costly future repairs. If you’re seeing any of these signs, this is the part you need:
- Harsh, jerky, or erratic shifting between gears
- The vehicle is stuck in one gear (Limp Mode)
- 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
- Noticeably poor fuel economy
By replacing your old unit with our professionally programmed 2007-2008 Yukon XL 1500 transmission control module, you directly address the root cause of these electronic failures.
Features & Benefits
- ✔ Plug & Play Installation: This module arrives pre-programmed to your vehicle’s VIN. There is absolutely no need for an expensive trip to the dealership for additional programming.
- ✔ Restores Smooth Shifting: Eliminates harsh shifts, slipping, and delayed engagement by restoring precise electronic control over your 4L60E, 4L65E, or 4L70E transmission.
- ✔ Clears Fault Codes: Specifically designed to resolve common transmission-related DTCs, turning off that frustrating check engine light and restoring communication between vehicle systems.
- ✔ OEM-Standard Quality: Built to meet or exceed original equipment specifications, ensuring reliable performance and long-term durability for your family’s primary vehicle.
- ✔ Hassle-Free Purchase: No core charge is required. You can keep or dispose of your old part without the complication of returning it.
- ✔ Guaranteed Protection: This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming
For modern vehicles like your Yukon, the TCM is more than just a simple controller; it’s a key component of a complex computer network. Generic, non-programmed modules often fail to communicate correctly with the Engine Control Module (ECM) and other systems, leading to persistent performance issues. Our VIN-specific programming ensures this 2007-2008 Yukon XL 1500 transmission control module integrates seamlessly, just like the original part, for optimal fuel mapping, shift points, and torque converter lockup. It’s the critical step that guarantees a successful, lasting repair.
Frequently Asked Questions
Will this part require any additional programming?
No. We program the module to the VIN you provide during checkout. This ensures it is ready for installation right out of the box, with no need for a dealership visit or specialized scan tools for programming.
Where is the TCM located on my Yukon XL 1500?
On the 2007-2008 GMC Yukon XL 1500, the transmission control module is typically located in the engine compartment, next to the battery. Always disconnect the battery before beginning the installation process.
Is this installation difficult for a DIY mechanic?
The physical installation is straightforward for someone with basic mechanical skills. It usually involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. The entire process often takes less than 30 minutes. The key benefit of our part is that the complex programming step is already done for you.
How do I know for sure that my TCM is the problem?
The symptoms listed above (erratic shifting, limp mode, codes like P0700) are strong indicators. For a definitive diagnosis, have a professional mechanic with a high-end scan tool check the communication and data from your existing TCM. However, this part is the most common point of failure for these electronic symptoms.
What happens if I don’t replace a failing TCM?
Continuing to drive with a faulty TCM can lead to more severe mechanical damage inside the transmission due to improper shifting and pressure control. This can turn a relatively simple electronic repair into a much more expensive mechanical rebuild. Addressing the issue promptly with a new 2007-2008 Yukon XL 1500 transmission control module is the wisest course of action.