Is your 2007, 2008, or 2009 GMC Yukon suffering from harsh, erratic shifting, getting stuck in gear, or flashing a check engine light? These are classic signs of a failing Transmission Control Module (TCM). A faulty TCM can make your reliable family SUV feel unpredictable and unsafe. This genuine GM T42 TCM, service number 24240449, is the definitive solution to restore the smooth, dependable performance you expect from your vehicle.
Common Symptoms & Your Solution
When the brain of your transmission fails, your Yukon’s performance suffers dramatically. You’re likely experiencing one or more of these frustrating issues:
- Abrupt, harsh, or delayed gear shifts
- Vehicle 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 codes
- Failure to upshift or downshift, leading to poor acceleration and fuel economy
- Complete loss of communication with the transmission
This module is the direct fix for these problems. As the central command unit for your automatic transmission, a new, properly programmed 2007-2009 GMC Yukon transmission control module will correctly manage shift points, torque converter lockup, and line pressure, bringing your vehicle’s drivability back to factory standards.
Features & Benefits
- ✔ Plug-and-Play Installation: This module arrives pre-programmed to your Yukon’s specific Vehicle Identification Number (VIN). This critical step ensures perfect communication with your vehicle’s other computers, eliminating the need for an expensive trip to the dealership for programming.
- ✔ Restored Drivability: End the stress of unpredictable shifting. This TCM restores the smooth, precise gear changes your vehicle had when it was new, improving both comfort and safety.
- ✔ OEM-Quality Engineering: Built to strict General Motors standards, this T42 module ensures long-term reliability and durability, whether you’re towing a boat or just running daily errands.
- ✔ Cost-Effective Repair: By providing a VIN-programmed unit, we help you avoid hundreds of dollars in dealership programming fees and diagnostic time, making this a smart, efficient repair.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
In a modern vehicle like your GMC Yukon, the TCM doesn’t work in isolation. It constantly communicates with the Engine Control Module (ECM), Body Control Module (BCM), and other systems. Simply installing a generic, non-programmed module is a recipe for failure. It can lead to persistent error codes, incorrect shifting, and even damage to your transmission. Our VIN-specific programming loads the exact software and calibration files for your vehicle’s powertrain and options, ensuring a seamless integration that works correctly the first time. This is the only way to guarantee a lasting fix for your transmission woes.
Don’t let a faulty TCM compromise the safety and reliability of your SUV. Installing this precision-programmed 2007-2009 GMC Yukon transmission control module is the most effective way to solve your shifting problems and get back on the road with confidence. With a straightforward installation process—typically located next to the battery—you can have your vehicle running properly in under an hour. This is the trusted, reliable solution for your 2007-2009 GMC Yukon transmission control module needs.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. This is the primary benefit of our service. We pre-program the module to your vehicle’s exact VIN before shipping. It will arrive ready for a plug-and-play installation, with no additional programming required.
Where is the TCM located on my 2007-2009 GMC Yukon?
On most 2007-2009 GMC Yukon, Tahoe, and Suburban models, the Transmission Control Module is located in the engine compartment, typically mounted in a bracket right next to the battery.
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 root cause, it’s essential to have the vehicle scanned for any other transmission-specific codes (e.g., P0751, P0756) to confirm the diagnosis. A failing TCM is a very common cause for this code.
Is this installation difficult for a DIY mechanic?
The installation is generally straightforward. It involves disconnecting the battery, unplugging the electrical connectors from the old TCM, unbolting it from its bracket, and then installing the new one in reverse order. Most people with basic tools can complete the job in under 30 minutes.
Is there a core charge for my old part?
No, there is no core charge required for this part. You can keep your old module without the hassle of returning it.