Is your workhorse 2006-2014 Chevrolet Express 1500 Van struggling with transmission problems? If you’re experiencing delayed shifting, getting stuck in gear, or seeing a persistent check engine light, a faulty Transmission Control Module (TCM) is the most likely culprit. As the electronic brain of your 4L60E or 4L80E automatic transmission, the TCM is responsible for every gear change. When it fails, it can bring your work to a grinding halt. This replacement T42 TCM is the definitive solution, arriving expertly programmed to your van’s specific VIN for a true plug-and-play fix.
From the Diagnostic Bay: The Case of the Limping Work Van
A local contractor brought in his ’09 Express 1500, complaining it was stuck in what felt like third gear—a classic limp mode symptom. His van was his livelihood, and every day off the road was lost income. He was getting a P0700 code, which is a general transmission fault request. After a quick scan, we confirmed the TCM wasn’t communicating properly. Instead of sending him to a dealership for a costly replacement and programming, we installed one of our VIN-programmed modules. In less than an hour, the van was shifting perfectly, codes were cleared, and he was back on his way to the job site. This isn’t just a part; it’s a fast solution to a costly problem.
Is Your Express Van Showing These Symptoms?
- ✔️ Harsh, erratic, or delayed gear shifts that make driving unpredictable.
- ✔️ The vehicle is stuck in “limp mode,” usually second or third gear, with no ability to upshift or downshift.
- ✔️ Check Engine Light or other transmission warning lights are illuminated on the dash.
- ✔️ Diagnostic Trouble Codes (DTCs) are present, such as P0700 (Transmission Control System Malfunction) or P0750-series solenoid codes.
- ✔️ A noticeable decrease in fuel economy due to inefficient shifting.
- ✔️ The transmission seems to slip out of gear or fails to engage properly from Park or Neutral.
DIY Installation: Get Your Van Back to Work in Under 30 Minutes
Replacing the TCM on your Express Van is a straightforward job that most DIYers can handle with basic tools. Our pre-programmed module means you can skip the expensive trip to the dealership. For the 2006-2014 Express 1500, the TCM is conveniently located for easy access.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the Module: On your Express Van, the TCM is found in the engine compartment on the right-hand (passenger) side.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Then, unbolt the module from its mounting bracket.
- Install the New Module: Mount your new, VIN-programmed TCM onto the bracket and securely reconnect the electrical harnesses. Ensure they click into place.
- Final Steps: Reconnect the negative battery terminal. While the system may reset, it’s best practice to use a basic OBD2 scan tool to clear any stored fault codes. Start the van and take it for a test drive to confirm smooth shifting.
With this direct-fit 2006-2014 Express 1500 TCM, you’re not just buying a part; you’re buying a reliable, long-term fix that restores the performance and dependability you count on from your Chevrolet van. Built to meet or exceed OEM specifications and backed by our one-year warranty, it’s the smart choice for professional mechanics and fleet owners alike.
Verified Vehicle Compatibility
This T42 TCM is a direct replacement for part number 24234274 and is compatible with a wide range of General Motors vehicles. While this part fits many models, it is guaranteed to be the correct component for the following:
- Chevrolet Express 1500 Van (2006-2014)
- Chevrolet Express 2500 / 3500 Van (2006-2014)
- GMC Savana 1500 / 2500 / 3500 Van (2006-2014)
- Chevrolet Silverado & GMC Sierra Trucks (Check specific years)
- Chevrolet Tahoe, Suburban & GMC Yukon (Check specific years)
- And many other GM cars, trucks, and SUVs from 2006-2014.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. This module arrives at your door pre-programmed to your van’s specific VIN. It is ready for immediate installation right out of the box, saving you time and money.
Where is the TCM located on my 2011 Express 1500?
For the 2006-2014 Chevrolet Express and GMC Savana vans, the Transmission Control Module is located in the engine bay, on the right-hand (passenger) side.
Will this fix a P0700 trouble code?
Yes. While a P0700 code is a general fault indicator, it is very commonly triggered by a failing TCM. Replacing a faulty module with our programmed unit is a primary fix for this and related transmission codes.
Is there a core charge for my old part?
No, there is absolutely no core charge. You can keep your old module without any extra fees or hassle.