Restore Peak Transmission Performance in Your GMC Yukon XL
Is your 2007-2008 GMC Yukon XL 1500 experiencing frustrating and unpredictable shifting? Issues like harsh gear changes, getting stuck in limp mode, or a lit check engine light are often tell-tale signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every shift, managing torque converter lockup, and monitoring system health. When it fails, the smooth and reliable performance you expect from your vehicle disappears. This replacement T42 TCM, part number 24235753, is the definitive solution to restore your transmission’s functionality and your driving confidence.
From the Diagnostic Bay
We recently had a 2008 Yukon XL come into the shop with a classic case of TCM failure. The owner reported that it would slam into gear from a stop and sometimes refuse to shift past 2nd gear, making highway driving impossible. The dashboard was lit up with a check engine light and a transmission warning. A quick scan pulled code P0700 (Transmission Control System Malfunction) and a few solenoid-specific codes. Instead of a costly and time-consuming transmission rebuild, we identified the faulty TCM. After installing one of our VIN-programmed T42 modules, we cleared the codes and took it for a test drive. The shifts were crisp and smooth, just like it had rolled off the factory floor. The owner was thrilled to have his reliable family hauler back without the massive bill of a full transmission replacement.
Symptoms of a Failing 2007-2008 Yukon XL 1500 TCM
A failing TCM can manifest in various ways, often mimicking more severe mechanical transmission problems. Before assuming the worst, check if your vehicle is exhibiting any of these common symptoms. Replacing the module is a direct and effective fix for these specific electronic issues.
- ✔ Erratic and Harsh Shifting: Experiencing sudden, jerky, or delayed gear changes that make for an uncomfortable ride.
- ✔ Stuck in Gear / Limp Mode: The transmission defaults to a single gear (usually 2nd or 3rd) to prevent further damage, severely limiting vehicle speed.
- ✔ Warning Lights: The Check Engine Light or a specific transmission warning light is illuminated on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs): Common codes associated with a bad TCM include P0700, P0750, P0753, P0758, and other solenoid-related faults.
- ✔ Poor Fuel Economy: Inefficient shifting and failure of the torque converter to lock up properly can lead to a noticeable drop in MPG.
- ✔ No Communication: In some cases, a scan tool may be unable to communicate with the TCM, indicating a complete module failure.
The Plug-and-Play Advantage: Pre-Programmed for Your VIN
One of the biggest hurdles in replacing modern electronic modules is the need for expensive dealership programming. Our T42 TCMs eliminate this step entirely. We pre-program each module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This process loads the latest GM software and calibrations tailored to your Yukon XL’s exact configuration. The result is a true plug-and-play installation. Simply swap the old module with the new one, and your vehicle is ready to go—no additional tools, software, or trips to the dealer required. This not only saves you time and money but also ensures optimal transmission performance and fuel efficiency from the moment of installation. This is the most reliable way to service your 2007-2008 Yukon XL 1500 TCM.
Installation and Compatibility
This module is engineered to meet or exceed original equipment specifications, ensuring a perfect fit and reliable operation. For the 2007-2008 Yukon XL 1500, the TCM is typically located in the engine compartment, next to the battery. Installation is straightforward and can often be completed in under 30 minutes. Always remember to disconnect the vehicle’s battery before beginning the replacement to prevent electrical damage and help reset the vehicle’s internal systems. After installation, use a standard OBD2 scan tool to clear any stored fault codes.
This module is a direct replacement for multiple part numbers, including 24242391, 24234503, 24252114, 24235753, and others, making it a versatile solution for a wide range of GM trucks and SUVs from 2006-2014 equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E.
Frequently Asked Questions
Do I need to take my vehicle to a dealer for programming?
No. This Transmission Control Module comes pre-programmed to your vehicle’s VIN. This makes it a plug-and-play installation, saving you the time and expense of a dealership visit.
Where is the TCM located on my 2007-2008 Yukon XL 1500?
On most 2007-2008 GMC Yukon XL 1500 models, the TCM is located in the engine bay, mounted next to the battery. Always verify the location on your specific vehicle before beginning work.
Will this fix my transmission shifting problems?
If your vehicle’s issues are caused by an electronic failure within the TCM (such as harsh shifting, limp mode, or specific diagnostic codes like P0700), this part is the correct solution. It will not fix internal mechanical failures like worn clutches or a bad torque converter.
Is there a core charge for my old part?
No, there is no core charge associated with this module. You can keep your old part without any hassle or need to return it.
What transmissions is this T42 module compatible with?
This T42 TCM is designed for vehicles equipped with GM 4-speed automatic transmissions, including the popular 4L60E, 4L65E, 4L70E, and 4L80E series found in a wide range of GM cars, trucks, and SUVs from 2006 to 2014.