Get Your Workhorse Back on the Job with a Reliable Transmission Fix
As a mechanic with over two decades of experience, I know that when a work van like your 2006-2014 Chevrolet Express 2500 goes down, every minute of downtime costs you money. If you’re dealing with frustrating shifting problems, a transmission warning light, or your van is stuck in limp mode, the culprit is often a failed Transmission Control Module (TCM). This isn’t just an inconvenience; a faulty TCM can lead to poor fuel mileage and even cause permanent damage to your transmission if left unchecked. This T42 TCM, part number 24243901, is the dependable, straightforward solution to get your van’s transmission shifting smoothly and reliably again.
The biggest headache with replacing electronic modules is usually the trip to the dealership for expensive programming. We eliminate that step entirely. By providing your vehicle’s VIN during checkout, we program the module specifically for your Express 2500. It arrives at your door ready for a true plug-and-play installation, saving you time, money, and the hassle of coordinating with a service center. This is the same process we use in my own shop to get our customers’ fleet vehicles back in service fast.
A Technician’s Notebook
I recently had a 2011 Express 2500 cargo van come into the shop. The owner, a plumber, said it was shifting hard from 1st to 2nd and would occasionally refuse to shift out of 3rd gear on the highway—classic limp mode behavior. He was getting a generic P0700 (Transmission Control System Malfunction) code. While his first thought was a bad shift solenoid, my experience pointed elsewhere. On these GM vans, the T42 TCM is a common failure point due to heat cycles in the engine bay. After confirming power and ground to the module were good, we swapped in one of our VIN-programmed units. The van was shifting perfectly within 30 minutes of pulling it into the bay. It’s a prime example of how replacing the 2006-2014 Express 2500 TCM can be a quick and definitive repair.
Is Your Express Van Showing These Signs of TCM Failure?
- ✔ Harsh, slamming shifts or delayed gear engagement.
- ✔ The vehicle feels stuck in one gear (often 2nd or 3rd) and won’t upshift or downshift.
- ✔ Check Engine Light or a dedicated transmission warning light is illuminated on your dash.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750-P0758 (solenoid circuit faults), or U-codes indicating lost communication.
- ✔ A noticeable drop in fuel economy or a transmission that seems to be overheating.
- ✔ Complete loss of communication with the transmission, preventing it from shifting at all.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- ✔ Locate the Module: On the Chevrolet Express 2500 Van, the TCM is typically found in the engine compartment on the right-hand (passenger) side.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors. Be gentle with the locking tabs, as they can become brittle over time. Then, unbolt the old module from its mounting bracket.
- ✔ Install the New TCM: Bolt your new, pre-programmed module into place. Securely reconnect the electrical harnesses, making sure they click into place.
- ✔ Final Steps: Reconnect the battery terminal. While our programming handles the critical setup, it’s always a good practice to use a basic OBD2 scan tool to clear any stored fault codes from the vehicle’s memory. Start the vehicle and take it for a test drive to confirm smooth shifting.
Will This Fit My Vehicle?
This module is a guaranteed fit for the 2006-2014 Express 2500 TCM and is also compatible with a wide range of other General Motors vehicles. It is a direct replacement for part numbers 24243901, 24252114, 24234503, and others listed in the interchange data. Please see the detailed list below:
- CHEVROLET EXPRESS 2500 VAN (2006-2014): Transmission; (RH engine compartment)
- CHEVROLET EXPRESS 1500/3500 VAN (2006-2014): Transmission; (RH engine compartment)
- GMC SAVANA 1500/2500/3500 VAN (2006-2014): Transmission; (RH engine compartment)
- CHEVROLET SILVERADO & GMC SIERRA (2007-2013): Transmission; (next to battery)
- CHEVROLET TAHOE & GMC YUKON (2007-2009): Transmission; (next to battery)
- CHEVROLET IMPALA (2006-2011): Transmission; (lower air cleaner housing)
- …and many more GM cars, trucks, and SUVs.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. This Transmission Control Module is pre-programmed to your vehicle’s VIN before shipping. It is ready for installation right out of the box, with no additional programming or dealer visits required.
Where is the TCM located on my 2009 Express 2500?
On the 2006-2014 Express and Savana vans, the TCM is located in the engine bay, mounted on the right-hand (passenger) side.
Will this fix transmission solenoid codes like P0752?
In many cases, yes. The TCM controls the solenoids. When the driver circuit inside the module fails, it can trigger a solenoid-specific fault code even if the solenoid itself is good. Replacing a faulty TCM is often the correct fix for these electrical codes.
Is there a core charge for this part?
No, there is no core charge. You are not required to send your old, faulty module back to us, saving you time and return shipping costs.