Get Your Express Van Out of Limp Mode and Shifting Smoothly
If your 2006-2014 Chevrolet Express 2500 Van is suffering from harsh shifting, getting stuck in gear, or has the transmission warning light on, you’ve likely pinpointed the culprit: a failing Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen hundreds of these T42 modules fail, causing immense frustration for van owners who rely on their vehicles for work. Heat cycles in the engine bay and internal electronic component degradation are the primary causes. This isn’t just an annoyance; it’s a reliability issue that can leave you stranded. This replacement T42 TCM, part number 24240449, is the definitive solution to restore your transmission’s performance and your peace of mind.
The Power of Pre-Programming: A True Plug-and-Play Solution
The biggest hurdle with electronic module replacement has always been the expensive and time-consuming trip to the dealership for programming. We eliminate that step entirely. Before this module ships, we program it directly to your van’s Vehicle Identification Number (VIN). This ensures that all factory shift points, torque converter clutch strategies, and communication protocols are perfectly matched to your specific vehicle. The result is a seamless installation that resolves common Diagnostic Trouble Codes (DTCs) right out of the box, making this the ideal fix for both professional shop owners and dedicated DIYers. Installing a properly configured 2006-2014 Express 2500 TCM is critical for the longevity of your 4L80E or other GM transmission.
Case Study: The Work Van That Wouldn’t Shift
A local contractor brought in his 2011 Express 2500, complaining that it would randomly get stuck in 3rd gear. He was losing time and money on jobs because the van was unreliable. His scanner showed a P0700 (Transmission Control System Malfunction) and a couple of intermittent solenoid codes. Instead of just throwing parts at it, we checked the wiring and found it was fine. The issue was classic internal TCM failure. We installed one of our VIN-programmed T42 modules. The entire job, from diagnosis to test drive, took less than an hour. The van’s shifting was immediately crisp and predictable, and the owner was back on the road the same day, without the typical 2-day wait and programming fee from the dealer.
Is Your Van Exhibiting These Telltale Signs?
- â Harsh, banging shifts or delayed gear engagement.
- â Vehicle is stuck in “limp mode” (usually second or third gear).
- â Check Engine Light or Transmission Warning Light is illuminated.
- â Stored DTCs such as P0700, P0750, P0753, P0758, or other solenoid-related faults.
- â Complete loss of upshifting or downshifting capabilities.
- â Poor fuel economy and a feeling of sluggish performance.
- â No communication with the TCM when using a diagnostic scan tool.
A Straightforward Guide to Your 30-Minute Installation
- â Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the system.
- â Locate the TCM: On the 2006-2014 Express 2500 Van, the TCM is typically located in the engine compartment on the right-hand (passenger) side.
- â Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly. Then, unbolt the module from its mounting bracket.
- â Install the New Module: Bolt the new, pre-programmed TCM into place. Securely reconnect the electrical harnesses, ensuring they click into place.
- â Final Steps: Reconnect the battery terminal. While our programming handles the critical setup, it’s best practice to use a basic OBD2 scan tool to clear any lingering fault codes from the vehicle’s memory. Start the engine and take a test drive to confirm smooth shifting.
Why Choose This 2006-2014 Express 2500 TCM?
This isn’t just a replacement part; it’s a comprehensive repair solution. Built to meet or exceed original equipment standards and backed by a one-year warranty, it provides lasting reliability. It’s also interchangeable with a wide range of part numbers, including 24252114, 24234503, and 24235753, making it a versatile choice for many GM vehicles. By purchasing this module, you’re not just fixing a symptomâyou’re restoring the core logic of your vehicle’s transmission for dependable performance day in and day out.
Verified Fitment for Your General Motors Vehicle
This T42 Transmission Control Module is a direct-fit replacement for a wide array of GM cars, trucks, and SUVs. While this page focuses on the 2006-2014 Express 2500 TCM, it is also compatible with the following models. Please verify your vehicle’s specific location as noted.
- Chevrolet Express / GMC Savana (1500, 2500, 3500) 2006-2014: (RH engine compartment)
- Chevrolet Silverado / GMC Sierra (1500, 2500) 2007-2013: (Next to battery)
- Chevrolet Tahoe / GMC Yukon 2007-2009: (Next to battery)
- Chevrolet Impala 2006-2011: (Lower air cleaner housing)
- Chevrolet HHR 2006-2011: (LH engine compartment)
- Cadillac DTS 2006-2011: (RH front engine compartment)
- Pontiac G6 2006-2010: (LH strut tower)
- …and many more GM models from 2006-2014.
Frequently Asked Questions
Do I need to do any programming myself?
No. This module arrives 100% ready for installation. We flash it with the latest GM software calibrated to your specific VIN before it ships, saving you a trip to the dealer.
Is there a core charge?
No, there is no core charge. You can keep your old part or recycle it without the hassle of sending it back.
What tools are required for installation?
Basic hand tools are all that’s needed, typically a socket set to remove the mounting bolts and a flathead screwdriver to help with connector tabs if they are stubborn. An OBD2 scanner is recommended for clearing codes post-installation.
What if I install it and still have problems?
While this module fixes the most common cause of these symptoms, shifting issues can also stem from internal transmission components, wiring, or solenoids. Our expert support team is here to help you troubleshoot if your issue persists.
How do I provide my VIN?
You will be prompted to enter your vehicle’s 17-digit VIN during the checkout process. Please double-check it for accuracy to ensure correct programming.