Restore Flawless Shifting to Your GMC Yukon XL 1500
Is your 2007 or 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). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating gear changes, managing torque converter lockup, and ensuring overall drivetrain efficiency. When it fails, it can leave your powerful SUV feeling unreliable and unsafe. This OEM-quality GM T42 TCM, part number 24235732, is the definitive solution to restore your vehicle’s performance and peace of mind.
The Plug-and-Play Solution: Pre-Programmed for Your Vehicle
One of the biggest hurdles in replacing modern electronic modules is the need for expensive and time-consuming dealership programming. We eliminate that step entirely. Each module is expertly programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures that the module communicates flawlessly with your Yukon’s Engine Control Unit (ECU) and other systems right out of the box. Simply install it, and you’re ready to go—no additional tools or dealer visits required. This process installs the latest GM software updates, ensuring optimal shift points, fuel economy, and long-term reliability for your 2007-2008 Yukon XL 1500 TCM.
From the Diagnostic Bay
We had a 2008 Yukon XL come in with a P0700 code and what the owner described as “violent” shifts from first to second gear. Another shop had already replaced two shift solenoids, but the problem persisted. After a quick data scan, we saw erratic pressure control solenoid commands originating from the TCM. The internal circuitry was failing under load. Instead of throwing more parts at it, we installed one of our VIN-programmed T42 modules. The test drive was perfect—smooth shifts, no codes, and a happy customer who saved hundreds by avoiding further incorrect diagnoses.
Diagnosing a Faulty 2007-2008 Yukon XL 1500 TCM
A failing TCM can manifest in various ways, often mimicking other transmission problems. If you’re experiencing any of the issues below, your TCM is the most likely culprit. Replacing it can prevent further damage to expensive internal transmission components.
- ✔ Harsh, delayed, or erratic gear shifts.
- ✔ Vehicle stuck in “limp mode” (usually second or third gear).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, P0753, P0758, or other solenoid-related codes are present.
- ✔ Failure to shift into higher or lower gears.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ Intermittent loss of communication with the scan tool.
Installation and Compatibility
Installing your new TCM is a straightforward process for a DIY mechanic or any professional technician. On the 2007-2008 Yukon XL 1500, the TCM is typically located in the engine bay, next to the battery. The replacement process takes less than 30 minutes. Always remember to disconnect the vehicle’s battery before removing the old module to prevent electrical damage and help reset the vehicle’s systems. After installation, use a standard OBD2 scanner to clear any stored fault codes. This module is a direct replacement for a wide range of GM service numbers, including 24252114, 24234503, 24230461, and many others, ensuring broad compatibility across the GM family of trucks, SUVs, and cars 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 the dealer for programming after installation?
No. This module comes pre-programmed to your specific VIN. It is a true plug-and-play solution, saving you the time and expense of a dealership visit.
Where is the TCM located on my 2007-2008 Yukon XL 1500?
On this specific model, the Transmission Control Module is typically found in the engine compartment, mounted right next to the battery. It’s a silver box with large electrical connectors.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault code, indicating that the TCM has detected a problem and requested the Check Engine Light to be turned on. While this module often resolves the root cause (like internal shorts or failed drivers that trigger other codes), you should always diagnose any other specific codes that accompany the P0700.
Is this a new or used part?
This is an OEM-quality, tested component guaranteed to meet or exceed original factory specifications. It is backed by our one-year warranty for your protection.
What is a core charge?
There is no core charge for this part. You are not required to send your old, faulty module back to us, which simplifies the repair process for you.