Get Your Work Van Back on the Road with a Reliable Transmission Solution
If your 2006-2014 Chevrolet Express 3500 Van is suffering from transmission problems like harsh shifting, getting stuck in gear, or a lit check engine light, a faulty Transmission Control Module (TCM) is often the culprit. As the electronic brain of your automatic transmission, the TCM’s health is critical for your van’s performance and reliability. This T42 TCM, part number 24238856, is the definitive solution, arriving pre-programmed to your van’s specific VIN. This means no expensive trips to the dealership for programming—it’s a true plug-and-play fix that restores smooth, predictable shifting and gets your vehicle back in service.
Case Study: A Tricky Diagnosis
I remember a fleet manager who brought in a 2011 Express 3500. The van was stuck in ‘limp mode’ (3rd gear only), making it useless for his delivery business. His regular mechanic had replaced two shift solenoids, but the problem persisted with a P0700 code. After a quick diagnostic, I suspected the TCM. The internal circuits on these modules can develop micro-fractures from years of heat and vibration. We installed one of our VIN-programmed T42 modules, and in under an hour, the van was shifting perfectly. He avoided a costly dealership visit and, more importantly, got his van back to making money the same day.
Is Your Express Van Showing These Red Flags?
A failing TCM can manifest in several ways. If you’re noticing any of the following symptoms, it’s a strong indicator that your module needs replacement. Addressing it now can prevent further damage to your transmission.
- ✔ Jarring, abrupt, or delayed gear shifts.
- ✔ Transmission warning light or Check Engine Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, or other solenoid-related faults.
- ✔ The vehicle is stuck in a single gear (limp mode) and will not upshift or downshift.
- ✔ A noticeable drop in fuel economy or a transmission that seems to be overheating.
- ✔ Complete loss of communication with the transmission module.
A Straightforward Guide to Your 2006-2014 Express 3500 Van TCM Installation
This installation is designed to be simple for both professional technicians and DIY-savvy vehicle owners. No specialized tools are required, and the process typically takes less than 30 minutes.
- Safety First: Begin by disconnecting the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On the Express 3500 Van, the TCM is typically 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 and remove it from the vehicle.
- Install the New Module: Mount the new, pre-programmed TCM onto the bracket and securely fasten it. Reconnect the electrical connectors, ensuring they click into place.
- Final Steps: Reconnect the negative battery terminal. While the module is plug-and-play, it’s good practice to use a basic OBD2 scan tool to clear any stored transmission codes. Start the vehicle and test drive to confirm smooth shifting.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of General Motors vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L80E. While this page is focused on the Express Van, please verify your vehicle in the list below.
- Chevrolet: Avalanche 1500 (07-08), Cobalt (06-10), Colorado (08-12), Express 1500/2500/3500 Van (06-14), HHR (06-11), Impala (06-11), Monte Carlo (06-07), Silverado 1500/2500 (07-13), SSR (05-06), Tahoe (07-09), Trailblazer (06-09)
- GMC: Canyon (08-12), Envoy / XL / XUV (06-09), Savana 1500/2500/3500 Van (06-14), Sierra 1500/2500 (07-13), Yukon / XL 1500 (07-09)
- Buick: Allure (06-09), LaCrosse (06-09), Lucerne (06-11), Rainier (06-07), Rendezvous (06-07)
- Cadillac: DTS (06-11)
- Pontiac: G5 (07-10), G6 (06-10), Grand Prix (06-08), Pursuit (06)
- Saturn: Aura (07-09), Ion (06-07), Vue (07-10)
- Hummer: H3 (08-10)
- Saab: 9-7X (06-09)
Frequently Asked Questions
Do I need to do any programming after I install this?
No. This module is delivered fully programmed to your vehicle’s VIN. You can install it right out of the box without needing a trip to the dealer or a high-end scan tool for setup. It’s a true plug-and-play solution.
What does ‘no core charge’ mean?
It means you do not have to send your old, faulty module back to us. You can keep it, recycle it, or dispose of it as you see fit, saving you the time and expense of return shipping.
Will this fix a P0700 trouble code?
A P0700 code is a general fault request from the TCM to the main engine computer (ECM) to turn on the check engine light. While this module often resolves the underlying issue causing the P0700, you should always diagnose any other specific transmission codes (like for solenoids or sensors) that are present alongside it.
Is this a genuine OEM part?
This is a high-quality replacement part built to meet or exceed original equipment manufacturer (OEM) specifications for fit, form, and function, ensuring reliable performance and durability.
What tools are needed for the installation?
The installation requires only basic hand tools. You will typically need a socket set to remove the module’s mounting bolts and a wrench to disconnect the battery terminal. No special electronic equipment is necessary.