Restore Peak Transmission Performance in Your GM Vehicle
Is your 2006-2014 Chevrolet Express 1500, Silverado, or other GM vehicle suffering from erratic shifting, delayed gear engagement, or a frustrating ‘limp mode’? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating shift points, managing torque converter lockup, and monitoring overall transmission health. When it fails, it can lead to poor performance, decreased fuel economy, and potentially catastrophic transmission damage if left unaddressed.
This genuine OEM-quality T42 Transmission Control Module, service part number 24235754, is the definitive solution. It arrives at your door expertly pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures complete compatibility with your vehicle’s systems, eliminating the need for expensive and time-consuming dealership programming. It’s a true plug-and-play fix designed to get you back on the road with confidence.
Expert Pro Tip
Before installing your new TCM, always disconnect the negative battery terminal for at least 15 minutes. This helps reset the vehicle’s related electronic systems. After installation, inspect the TCM connectors for any signs of corrosion or bent pins, as a poor connection can mimic the symptoms of a failed module. Use a quality scan tool to clear any stored Diagnostic Trouble Codes (DTCs) once the new part is securely installed.
Symptoms of a Failing T42 TCM
- ✔ Harsh, erratic, or delayed gear shifts that disrupt your drive.
- ✔ The vehicle gets stuck in a single gear (limp mode), often 2nd or 3rd.
- ✔ Check Engine Light or Transmission Warning Light is illuminated on the dashboard.
- ✔ Diagnostic trouble codes are present, such as P0700 (Transmission Control System Malfunction), P0750, or other solenoid-related codes.
- ✔ Inability to upshift or downshift properly, leading to poor acceleration.
- ✔ Noticeable decrease in fuel efficiency and potential transmission overheating.
- ✔ Complete loss of communication with the transmission, leading to a no-start or no-shift condition.
Why Choose Our 2006-2014 Express 1500 TCM?
This isn’t just a replacement part; it’s a comprehensive solution for your transmission woes. Our commitment to quality begins with the programming. By flashing the module with the latest GM software updates specific to your VIN, we ensure optimal shift strategies, improved fuel economy, and resolution of common factory issues. This module directly controls the critical functions of 4-speed automatic transmissions like the 4L60E, 4L65E, 4L70E, and 4L80E, found in a vast range of popular trucks, vans, and cars.
Installation is straightforward for a DIY mechanic or professional technician. The TCM is typically located in the engine bay—often on the RH or LH side, next to the battery, or under the air cleaner box, depending on your specific model. The entire process can often be completed in under 30 minutes. Best of all, there is no core charge, so you don’t have to worry about the cost or hassle of returning your old part.
Extensive Compatibility and Interchange Information
This module is a direct replacement for a wide array of part numbers, ensuring you get the right component for your repair. It is interchangeable with service numbers including: 24252114, 24234503, 24230461, 24234274, 24235340, 24238856, 24239224, 24239926, 24240400, 24241806, 24243901, 24243921, 24255280, 24256960, 24235732, 24235753, 24240449, and YNXS.
Frequently Asked Questions
What does a VIN-programmed TCM actually do?
VIN programming loads your vehicle’s specific software and calibration files onto the module. This ensures it communicates correctly with the Engine Control Module (ECM) and other vehicle systems, controlling shift points, line pressure, and torque converter functions exactly as the manufacturer intended for your specific model, engine, and drivetrain.
Is this module truly plug-and-play?
Yes. Because we program it to your VIN before shipping, you do not need to take it to a dealership for additional programming. Simply install it, connect the wiring harnesses, clear any old codes with a scan tool, and you’re ready to drive.
Where is the TCM located on my 2008 Chevy Silverado?
On many GM trucks and SUVs from this era, including the Silverado, Tahoe, and Sierra, the T42 TCM is typically located in the engine compartment, mounted next to the battery. Always consult a service manual for your specific vehicle to confirm the exact location before beginning work.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem and has requested the Check Engine Light to be turned on. While a faulty TCM is a common cause, this code can also be triggered by other issues like faulty solenoids or wiring. Replacing the TCM is often the correct fix, especially if other communication or specific solenoid codes are also present.
Do I need to send my old part back?
No. We do not require a core return for this part. You can keep your old module, which saves you the time, expense, and hassle of a core charge and return shipping.