Is Your 2007-2009 Yukon Experiencing Transmission Problems?
If your GMC Yukon is suffering from harsh shifting, getting stuck in gear, or displaying a check engine light with transmission-related codes, a failing Transmission Control Module (TCM) is the most likely culprit. The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear change and ensuring smooth, efficient operation. When it fails, it can lead to a cascade of performance issues that make your vehicle unreliable and unsafe to drive.
This genuine OEM-quality T42 TCM, part number 24239224, is the definitive solution to restore your vehicle’s transmission to factory performance. We take the guesswork and hassle out of the repair by programming the module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This means no expensive trips to the dealership for programming—it’s a true plug-and-play fix.
From the Diagnostic Bay
We had a 2008 Sierra come in with classic limp-mode symptoms—stuck in 3rd gear, with a P0700 code. The owner had already replaced two shift solenoids based on a generic code reader’s suggestion, but the problem persisted. After a quick scan with our professional equipment, we saw communication errors pointing directly to the TCM. The internal logic had failed, causing it to send faulty commands. We installed one of our VIN-programmed T42 modules, cleared the codes, and the truck was shifting perfectly on the test drive. It’s a great reminder that sometimes the issue isn’t the mechanical parts, but the computer that controls them.
Your Direct-Fit 2007-2009 Yukon Transmission Module Solution
Engineered to meet and exceed original equipment specifications, this module is a direct replacement for a wide range of GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It directly interchanges with numerous part numbers, including 24252114, 24234503, and 24239224, ensuring broad compatibility. By installing this pre-programmed module, you are not just replacing a part; you are restoring the precise electronic control required for optimal powertrain function, fuel economy, and longevity.
Symptoms of a Failing GM T42 TCM
- ✔ Harsh, erratic, or delayed gear shifts that make driving uncomfortable.
- ✔ Vehicle enters “limp mode,” often getting stuck in 2nd or 3rd gear.
- ✔ Check Engine Light or Transmission Warning Light is illuminated on the dash.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults are present.
- ✔ Complete failure to shift up or down, leading to poor acceleration.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ The transmission may feel like it’s slipping between gears.
Key Features & Benefits of This Module
- ✔ VIN Programmed for You: Arrives ready for installation with the latest GM software updates for your specific vehicle. No dealer visit required.
- ✔ Restores Performance: Eliminates shifting issues and fault codes, bringing back the smooth and responsive feel your vehicle had when it was new.
- ✔ OEM-Standard Quality: Built to the same strict standards as the original factory part, ensuring reliability and long-term durability.
- ✔ Simple Installation: Designed for a straightforward swap, typically taking less than 30 minutes with basic hand tools. Its location varies but is often accessible in the engine bay.
- ✔ No Core Charge: Keep your old part without the hassle or expense of returning a core.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. We program the module to the VIN you provide during checkout. It will arrive at your door ready to be installed, making it a true plug-and-play solution that saves you time and money.
What is the installation process like?
Installation is simple for a DIYer or professional mechanic. First, disconnect the vehicle’s battery. Locate the old TCM in the engine compartment (common locations include next to the battery or under the air cleaner box). Disconnect the electrical connectors, unbolt the old module, and install the new one in its place. Reconnect everything, and you’re done.
Will this fix my specific transmission error code?
This module is the correct solution for a wide range of transmission-related DTCs, especially communication codes like P0700 or specific solenoid circuit faults. If the root cause of the code is a faulty module, this part will resolve the issue.
Is this compatible with vehicles other than the GMC Yukon?
Yes, this T42 TCM is compatible with a vast range of 2006-2014 GM vehicles, including the Chevrolet Silverado, Tahoe, Impala; GMC Sierra; Cadillac DTS; Buick LaCrosse, and many others. Please check the detailed fitment list on this page to confirm compatibility with your exact model.
What if I have questions during installation?
Our team of automotive experts is here to help. If you have any questions before or after your purchase, please don’t hesitate to contact our support team for guidance.