Get Your Workhorse Back on the Job with a Reliable Transmission Fix
As a technician with over two decades of experience, I know that when a work van like your 2006-2014 Chevrolet Express 2500 is down, it’s not just an inconvenience—it’s costing you money. Erratic shifting, getting stuck in limp mode, or a flashing check engine light are all signs that your Transmission Control Module (TCM) might be the culprit. This T42 TCM, part number 24235732, is the direct-fit, reliable solution designed to get your van’s 4L80E or 4L60E transmission operating smoothly again, without the costly trip to the dealership.
The biggest headache with replacing electronic modules is the programming. We take care of that for you. By providing your vehicle’s VIN at checkout, we program the module with the latest GM software updates specifically for your van. This means it arrives ready for a true plug-and-play installation, resolving communication errors and performance issues right out of the box. This isn’t just a part; it’s a complete solution to restore the performance and dependability your business relies on.
Case Study: The Slipping Service Van
A local plumbing company brought in their 2011 Express 2500, complaining of harsh 1-2 shifts and occasionally getting stuck in 3rd gear (limp mode), especially on hot days. Their scanner showed a generic P0700 code. After verifying the fluid level was good and the internal wiring harness was intact, we suspected the TCM. Heat soak is a common killer of these modules, especially in hard-working vans. We installed one of our pre-programmed T42 modules. The entire job took less than 20 minutes. After a quick battery disconnect to clear memory and a test drive, the van shifted like new. The customer was back on the road the same afternoon, avoiding days of downtime and hundreds in dealership programming fees.
Is Your Express Van Showing These Signs of TCM Failure?
- âś” Abrupt, harsh, or delayed gear shifts that slam the driveline.
- âś” The vehicle is stuck in a single gear (often 2nd or 3rd) and won’t shift up or down.
- âś” An illuminated Check Engine Light or Transmission Warning Light on the dash.
- âś” Diagnostic Trouble Codes (DTCs) stored, such as P0700 (Transmission Control System Malfunction) or various solenoid-specific codes (e.g., P0751, P0756).
- âś” A noticeable drop in fuel economy due to inefficient shifting.
- âś” Complete loss of communication with the transmission module, preventing diagnostics.
Your Straightforward Installation Guide for the 2006-2014 Express 2500 TCM
- âś” Safety First: Before starting, disconnect the negative terminal from your van’s battery to prevent electrical shorts and help reset the vehicle’s electronic systems.
- âś” Locate the Module: On the Chevrolet Express and GMC Savana vans, the TCM is typically mounted in the engine compartment on the right-hand (passenger) side.
- âś” Disconnect and Remove: Carefully unclip the wiring harness connectors from the old TCM. Then, unbolt the module from its mounting bracket. There are usually two or three small bolts holding it in place.
- âś” Install the New Module: Bolt the new, pre-programmed TCM into the same location. Ensure it’s secure. Reconnect the wiring harness connectors, making sure they click firmly into place.
- âś” Final Steps: Reconnect the negative battery terminal. Start the vehicle and let it idle for a minute. It’s a good practice to use a basic scan tool to clear any lingering fault codes from the system’s memory. Take the van for a test drive to confirm smooth shifting.
Verified Fitment for Your GM Vehicle
This T42 TCM is a guaranteed fit for your 2006-2014 Chevrolet Express 2500 Van. It is also compatible with a wide range of other GM cars, trucks, and SUVs from the same era that use the 4L60E, 4L65E, 4L70E, and 4L80E automatic transmissions. This part is interchangeable with service numbers including 24242391, 24234503, 24252114, 24235753, and others. Please verify your part number or contact us with your VIN to ensure perfect compatibility.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
Absolutely not. This is the primary benefit of our service. We pre-program the module to your vehicle’s specific VIN before shipping, so it’s ready to install the moment you receive it. This saves you time, money, and the hassle of a dealership appointment.
What is the location of the TCM on a 2012 Express 2500 Van?
For the 2006-2014 Express and Savana van series, the Transmission Control Module (TCM) is located in the engine bay on the passenger side (RH side).
Is there a core charge for this part?
No, we do not require a core charge. You can keep your old module or dispose of it without the hassle of shipping it back to us.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While a faulty TCM is a very common cause, this code can also be triggered by other issues like bad solenoids or wiring. If the TCM itself is the root cause of the fault, then replacing it with our programmed module will resolve the code.
What if I order the wrong part?
We strongly encourage you to provide your VIN during checkout. This allows us to double-check compatibility and ensure we program the correct software for your specific vehicle, preventing order errors. If you have any doubts, our expert support team is here to help you confirm the right fit.