Get Your Yukon Driving Smoothly Again
Is your 2007-2009 GMC Yukon suffering from harsh, erratic shifting, getting stuck in gear, or flashing a check engine light? A failing Transmission Control Module (TCM) can turn your reliable family SUV into a source of constant stress. Restore your vehicle’s performance and your peace of mind with this professionally programmed T42 Transmission Control Module. We flash this unit with your Yukon’s specific Vehicle Identification Number (VIN), making installation a simple, plug-and-play process you can do at home, completely eliminating the need for an expensive trip to the dealership.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty TCM is the most likely culprit. This module is the definitive solution for:
- Abrupt, harsh, or delayed gear shifts
- The vehicle being stuck in “limp mode” (usually 2nd or 3rd gear)
- Illuminated Check Engine Light or Transmission Warning Light
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift properly
- A sudden drop in fuel economy or transmission overheating
Installing our pre-programmed 2007-2009 GMC Yukon Transmission Control Module directly addresses these problems, restoring the precise electronic control your transmission needs to operate as designed.
Key Features & Tangible Benefits
- ✔ Perfectly Matched to Your Yukon: We pre-program this module to your vehicle’s specific VIN using the latest GM calibrations. This ensures flawless communication and optimal performance right out of the box, with no additional dealer programming required.
- ✔ Restore Smooth, Dependable Shifting: This T42 module precisely controls your 4L60E, 4L65E, or 4L70E transmission, eliminating harsh shifts, slipping, and delayed engagement for a safer, more enjoyable drive.
- ✔ Built for Longevity: Engineered to meet or exceed original GM specifications, this module is designed for durability, giving you confidence whether you’re towing a boat or just running daily errands.
- ✔ Guaranteed Performance: This unit is backed by our one-year replacement warranty.
- ✔ Hassle-Free Purchase: Keep your old part. We don’t require a core return, saving you time and money on shipping and handling.
Expert Insight: More Than Just a Part
From our 20 years of experience, we know that a common failure point in these modules isn’t just the hardware, but outdated software. When we program your new TCM, we load it with the latest GM-approved calibrations for your specific Yukon. This not only fixes the immediate problem but also corrects known factory bugs and improves transmission logic. Many customers report that after installing our 2007-2009 GMC Yukon Transmission Control Module, their vehicle shifts even better than it did before the problems started.
This module is a direct replacement for a wide range of service numbers, including 24252114, 24234503, 24235340, and 24242391. Don’t let a faulty computer sideline your capable SUV. Order your reliable, ready-to-install 2007-2009 GMC Yukon Transmission Control Module today and get back to driving with confidence.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
Absolutely not. This is the primary benefit of our service. We pre-program the module to your Yukon’s VIN before shipping, so it’s ready for immediate installation upon arrival. This saves you the time, hassle, and high cost of dealership programming.
Is this a difficult part to install myself?
For most DIYers with basic tools, this is a straightforward job that takes under 30 minutes. The TCM is typically located in the engine compartment next to the battery. Simply disconnect the battery, unbolt the old module, unplug the connectors, and install the new one in its place.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault code, indicating that the TCM has detected a problem. While this module often resolves the root cause that triggers a P0700, it’s essential to diagnose any other specific codes that appear alongside it. In many cases where the TCM itself is faulty, this part is the correct fix.
What transmissions is this T42 module compatible with?
This T42 TCM is designed for vehicles equipped with GM’s popular 4-speed automatic transmissions, including the 4L60E, 4L65E, 4L70E, and 4L80E. It covers a vast range of GM trucks, vans, and SUVs from this era.
What happens if I don’t disconnect the battery before installation?
We strongly recommend disconnecting the negative battery terminal before starting. This prevents any risk of electrical shorts that could damage the new module or other vehicle electronics. It also helps the vehicle’s computer systems reset and properly recognize the new TCM upon reconnection.
Is there a core charge for my old module?
No, there is no core charge. You are not required to send your old part back to us, which simplifies the process and saves you return shipping costs.