Get Your Workhorse Van Back on the Road with a Reliable, Programmed TCM
If you rely on your 2006-2014 Chevrolet Express 2500 Van for work, you know that downtime isn’t just an inconvenience—it’s lost income. When your transmission starts acting up with harsh shifts, delayed engagement, or gets stuck in limp mode, the culprit is often a failing Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty TCM can sideline a perfectly good work van. This T42 series TCM, part number 24243901, is the definitive solution to restore your transmission’s performance and your peace of mind.
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. By providing your vehicle’s VIN at checkout, we program the module specifically for your Express 2500. It arrives at your door ready for a plug-and-play installation, loaded with the latest GM software updates. This ensures seamless communication with your vehicle’s systems, correct shift points, and proper torque converter lockup, getting your van back in service fast.
A Technician’s Notebook
I remember a call from a local contractor whose 2011 Express 2500 was stuck in third gear. He’d already replaced a couple of solenoids based on some codes, but the problem persisted intermittently. He was frustrated and losing money every day the van was down. We scanned it and found a P0700 (Transmission Control System Malfunction) code, a classic sign of a TCM issue. The internal circuitry of his original module was failing under heat. We installed one of our pre-programmed T42 modules, and the van was shifting perfectly within the hour. It’s a common failure, and this direct-fit part is the most reliable fix.
Is Your Express Van Showing These Telltale Signs?
- ✔ Unpredictable, harsh, or slamming gear shifts.
- ✔ The transmission feels like it’s slipping or hesitating between gears.
- ✔ Vehicle is stuck in ‘limp mode’ (usually 2nd or 3rd gear) with reduced power.
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, P0753, or other solenoid-related faults.
- ✔ A sudden drop in fuel economy or signs of the transmission overheating.
A Straightforward Guide to Installation
Replacing the Express 2500 Van TCM is a job most DIYers or any professional mechanic can handle in under 30 minutes. No specialized tools are required.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On the Express and Savana vans, 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. Then, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. Ensure they click into place.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s best practice to use a basic OBD2 scan tool to clear any stored fault codes from the system’s memory. Start the vehicle and test drive to confirm smooth shifting.
Verified Vehicle Compatibility
This module is a guaranteed fit for the 2006-2014 Chevrolet Express 2500 Van. It is also compatible with a wide range of other GM vehicles equipped with the T42 TCM and 4-speed automatic transmissions (like the 4L60E, 4L65E, 4L70E, and 4L80E). It is a direct replacement for part numbers including 24243901, 24252114, 24234503, 24230461, 24234274, and more.
This part will fit these makes and models with these options:
EXPRESS 2500 VAN 06-14 Transmission; (RH engine compartment)
EXPRESS 1500 VAN 06-14 Transmission; (RH engine compartment)
EXPRESS 3500 VAN 06-14 Transmission; (RH engine compartment)
SAVANA 1500 VAN 06-14 Transmission; (RH engine compartment)
SAVANA 2500 VAN 06-14 Transmission; (RH engine compartment)
SAVANA 3500 VAN 06-14 Transmission; (RH engine compartment)
SILVERADO 1500 PICKUP 07 Transmission; (new style, smooth door skin), (next to battery)
SIERRA 1500 PICKUP 07 Transmission; (new style, smooth door skin), (next to battery)
TAHOE 07-09 Transmission; (next to battery)
YUKON 07-09 Transmission; (next to battery)
AVALANCHE 1500 07-08 Transmission; (next to battery)
SUBURBAN 1500 07-08 Transmission; (next to battery)
IMPALA 06-11 Transmission; (lower air cleaner housing)
COBALT 06-10 Transmission; (LH strut tower)
HHR 06-11 Transmission; (LH engine compartment)
And many more GM models from 2006-2014.
Frequently Asked Questions
Frequently Asked Questions
Do I need to take my van to the dealer after installing this?
No. This module comes fully programmed to your vehicle’s VIN number. It is a true plug-and-play solution, saving you the time and expense of a dealership visit.
What happens if I don’t provide my VIN?
Providing your VIN is essential for the programming process. Without it, we cannot guarantee proper function or compatibility. The module will not work correctly without being matched to your specific vehicle.
Is this a reliable part for a work vehicle?
Absolutely. This module is built to meet or exceed OEM specifications and is tested for durability and performance. It’s designed to handle the demands of daily driving and commercial use, and it’s backed by a one-year warranty.
Will this fix a P0700 code?
A P0700 code indicates a general fault in the transmission control system. While a failing TCM is a very common cause, proper diagnosis is always recommended. In many cases where the TCM is the root cause, this part will resolve the code and the underlying shifting issues.
Is there a core charge?
No, there is no core charge for this part. You can keep your old module without the hassle of returning it.