Restore Peak Transmission Performance in Your Chevrolet Suburban
Is your 2007 or 2008 Chevrolet Suburban 1500 suffering from erratic shifting, getting stuck in gear, or displaying a check engine light? 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 smooth, efficient operation. When it fails, it can lead to frustrating drivability issues and potential damage to your transmission. This genuine GM T42 TCM, service part number 24230461, is the definitive solution to restore your vehicle’s factory performance and reliability.
From the Diagnostic Bay
We had a 2008 Suburban 1500 come into the shop with a classic ‘stuck in 3rd gear’ complaint and a P0700 code. The owner had already spent a few hundred dollars replacing shift solenoids at another shop, with no success. After a quick scan and verification of power and ground to the TCM, we identified the module itself as the culprit. Instead of a costly trip to the dealership for a new module and programming, we installed one of our pre-programmed T42 units. Within 30 minutes, the truck was shifting perfectly, all codes were cleared, and the customer was back on the road, relieved to have a final fix without the dealership hassle and expense.
Why Choose Our Programmed 2007-2008 Suburban 1500 TCM?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take an OEM-quality T42 module and professionally program it to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This critical step ensures that the module has the latest GM software updates and is perfectly calibrated for your Suburban’s engine, transmission, and tire size. The result is a true plug-and-play installation that eliminates the need for expensive dealership programming or specialized scan tools, getting you back on the road faster.
Is Your Suburban 1500 Showing These TCM Failure Signs?
- ✔️ Harsh, delayed, or unpredictable gear shifts.
- ✔️ The vehicle is stuck in “limp mode” (usually second or third gear).
- ✔️ An illuminated Check Engine Light or Transmission Warning Light.
- ✔️ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults.
- ✔️ Failure to upshift or downshift properly.
- ✔️ A noticeable decrease in fuel economy.
- ✔️ Complete loss of transmission engagement.
Simple Installation, Lasting Results
Installing your new 2007-2008 Suburban 1500 TCM is a straightforward process. On most Suburban models of this era, the module is conveniently located in the engine bay, next to the battery. Simply disconnect the vehicle’s battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Reconnect the connectors and the battery, and you’re ready to go. We recommend clearing any stored DTCs with a basic scan tool after installation to ensure a clean slate for the vehicle’s computer systems. Best of all, there is no core charge, so you don’t have to worry about the cost or hassle of sending your old part back.
This module is a direct replacement for a wide range of GM part numbers, including 24252114, 24234503, 24230461, and 24242391. By ordering this pre-programmed 2007-2008 Suburban 1500 TCM, you are ensuring a precise fit and function for your vehicle, backed by a one-year warranty for complete peace of mind.
Frequently Asked Questions
What does this Transmission Control Module do?
The TCM acts as the central computer for your automatic transmission. It receives data from various sensors on the engine and vehicle, and uses this information to control shift points, line pressure, and torque converter lockup, ensuring optimal performance, fuel efficiency, and smooth operation.
Is this TCM really plug-and-play?
Yes. Because we program the module to your specific VIN before shipping, it arrives ready for installation. It will have the correct software and calibrations for your vehicle, eliminating the need for any additional programming or trips to a dealership.
Where is the TCM located on my 2007-2008 Suburban 1500?
For the 2007-2008 Chevrolet Suburban 1500, the Transmission Control Module is typically found in the engine compartment, mounted next to the battery.
Will this part fix a P0700 diagnostic code?
A P0700 code is a general fault code indicating the TCM has detected a problem and requested the check engine light. While a faulty TCM is a very common cause, this code can also be triggered by other transmission issues. However, if you are experiencing other symptoms like erratic shifting along with the P0700 code, replacing the TCM is often the correct repair.
Do I need to return my old TCM?
No, there is no core charge for this part. You can keep your old module without any additional fees or hassle, making the replacement process simpler and more convenient.