Restore Peak Transmission Performance
Is your 2007-2008 GMC Yukon XL 1500 suffering from erratic shifting, getting stuck in gear, or displaying transmission-related warning lights? These are classic signs of a failing Transmission Control Module (TCM). As the central computer for your automatic transmission, the TCM is responsible for executing smooth gear changes, managing torque converter lockup, and ensuring overall drivetrain efficiency. When it fails, it can cripple your vehicle’s performance and leave you stranded. This OEM-quality T42 TCM, service number 24234274, is the definitive solution to restore your vehicle’s factory performance and reliability.
From the Diagnostic Bay
We had a 2008 Yukon XL 1500 come into the shop that was perpetually stuck in ‘limp mode’ (3rd gear). The owner had already replaced a couple of solenoids with no luck, and the dash was lit up with a P0700 code. After a quick scan, we confirmed communication with the TCM was intermittent. Instead of a costly and time-consuming repair at the dealership, we installed one of our pre-programmed T42 modules. In under 30 minutes, the vehicle was shifting perfectly through all gears, the check engine light was off, and the customer was back on the road, saving hundreds of dollars and significant downtime.
Diagnosing and Replacing Your 2007-2008 Yukon XL TCM
A faulty TCM can manifest in various ways, often mimicking internal transmission problems. Before condemning your transmission, it’s crucial to consider the module itself. Our VIN-programmed T42 TCM is engineered to be a direct, plug-and-play replacement, eliminating the need for expensive dealership programming. We flash the module with your vehicle’s specific VIN and the latest GM software updates before it ships, ensuring it works seamlessly right out of the box. This simple replacement can resolve complex issues and prevent further damage to your transmission’s mechanical components.
Common Symptoms of a Failing TCM
- ✔ Harsh, erratic, or delayed gear shifts.
- ✔ Vehicle is stuck in a single gear (limp mode).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults are present.
- ✔ Complete loss of gear engagement or failure to shift.
- ✔ Poor fuel economy and potential for transmission overheating.
- ✔ Unexplained communication errors with the transmission system.
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 is interchangeable with numerous part numbers, including 24252114, 24234503, 24230461, and more, making it a versatile solution for many models from Chevrolet, GMC, Cadillac, Buick, and others.
Simple Installation Process
Installation is straightforward for a DIY mechanic or professional technician. On the 2007-2008 Yukon XL 1500, the TCM is typically located in the engine compartment, next to the battery. Always disconnect the battery’s negative terminal before beginning. Simply unbolt the old module, disconnect the electrical connectors, and install the new one in its place. Once installed, reconnect the battery and use a standard OBD2 scanner to clear any stored fault codes. No core charge means you can keep your old part without any hassle.
Frequently Asked Questions
Do I need to program this module?
No. This Transmission Control Module comes pre-programmed to your vehicle’s specific VIN. Simply provide your VIN at checkout, and we will flash the module with the correct software, making it ready for immediate plug-and-play installation.
Where is the TCM located on my 2007-2008 Yukon XL 1500?
On this specific model, the TCM is generally found in the engine bay, mounted next to the battery. Always confirm the location before beginning the replacement process.
Will this part fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module can resolve the root cause of a P0700, it’s essential to diagnose any other codes that may be present. In many cases where the TCM itself is faulty, replacing it will clear this code and related issues.
Is this compatible with other GM vehicles?
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; and many others using 4-speed automatic transmissions. Please verify the part number or use our fitment tool to ensure compatibility.
Is there a core charge for this part?
No, we do not require a core charge. You are not required to send your old, faulty module back to us, which simplifies the repair process for you.