End Your Yukon’s Shifting Nightmares
Is your 2007-2009 GMC Yukon suffering from harsh, unpredictable shifting, getting stuck in gear, or throwing transmission-related check engine lights? These are classic signs of a failing Transmission Control Module (TCM), a critical component that acts as the brain for your automatic transmission. Driving with a faulty TCM isn’t just frustrating; it can lead to poor fuel economy, unsafe driving conditions, and potentially catastrophic transmission damage. This pre-programmed T42 TCM is the definitive, plug-and-play solution to restore your vehicle’s performance and your peace of mind.
Common Symptoms & Your Solution
A failing TCM can manifest in several ways, crippling your Yukon’s reliability. If you’re experiencing any of the following, this module is the fix you need:
- Abrupt, harsh, or delayed gear shifts
- Vehicle entering “limp mode,” often stuck in 2nd or 3rd gear
- An illuminated Check Engine Light or Transmission Warning Light
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Complete failure to shift up or down
- A noticeable drop in fuel efficiency
By replacing your old unit with this expertly prepared 2007-2009 GMC Yukon transmission control module, you are directly addressing the root cause of these issues, not just masking the symptoms.
Features & Tangible Benefits
- โ Ready to Install, No Dealer Needed: Each module is pre-programmed to your Yukon’s specific Vehicle Identification Number (VIN). This means it works perfectly right out of the box, saving you from the time, cost, and hassle of a dealership programming appointment.
- โ Restored Drivability: Experience the smooth, responsive, and efficient shifting your vehicle had when it was new. This module ensures precise control over torque converter lockup and gear changes for a comfortable and predictable ride.
- โ Built for Durability: Manufactured to strict OEM specifications, this T42 TCM is designed to withstand the demanding conditions of daily driving, towing, and hauling, ensuring long-term reliability.
- โ This unit is backed by our one-year replacement warranty. Enjoy confidence in your repair, knowing you’re protected against component defects.
Pro-Tip from a 20-Year Tech
After installing your new TCM, it’s crucial to clear the transmission’s adaptive memory. The easiest way to do this is by disconnecting the vehicle’s battery for about 15-20 minutes before you begin the installation. This forces the entire system to reset and allows the new module to learn your driving habits from a clean slate, ensuring the smoothest possible operation from day one. It’s a simple step that makes a huge difference in performance.
Don’t let a faulty TCM dictate how and when you can drive your vehicle. This is the most effective and straightforward way to fix the problem correctly. By installing this high-quality, VIN-programmed 2007-2009 GMC Yukon transmission control module, you’re not just buying a part; you’re investing in your vehicle’s longevity and your own driving confidence.
Frequently Asked Questions
What does a “VIN-programmed” module mean for me?
It means the module arrives at your door fully configured with the latest GM software specific to your Yukon’s exact build. This makes installation a true plug-and-play process, as the module will immediately communicate correctly with your vehicle’s engine and other systems without needing any special tools or a trip to the dealership for expensive programming.
Is this part difficult to install?
For most 2007-2009 Yukon models, the TCM is located in the engine bay next to the battery and is very accessible. The installation typically takes less than 30 minutes with basic hand tools. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place.
Will this 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 underlying cause of a P0700, it’s always wise to have the specific transmission codes read (e.g., P0751, P0756) to confirm the issue is with the module or its related solenoids. In many cases, a faulty TCM is the culprit.
Do I need to send my old TCM back?
No, there is no core charge for this part. You can keep your old module, which saves you the time and expense of return shipping.
How can I be sure this is the right part for my vehicle?
This module is a direct replacement for service numbers 24234503, 24242391, and 24252114, among others. It is specifically intended for the 2007-2009 GMC Yukon. Providing us with your VIN during checkout ensures we program it perfectly for your specific vehicle configuration.