Restore Peak Transmission Performance in Your Chevy Express Van
Is your 2006-2014 Chevrolet Express 1500 van suffering from poor shifting, getting stuck in gear, or displaying a persistent check engine light? These are tell-tale signs of a failing Transmission Control Module (TCM). As the central computer for your automatic transmission, a faulty TCM can cause a cascade of frustrating and potentially damaging issues. This genuine OEM-quality T42 TCM, service number 24252114, is the definitive solution to restore your van’s drivability and reliability. It arrives fully programmed to your vehicle’s specific VIN, ensuring a seamless, plug-and-play installation without any need for expensive dealership programming.
From the Diagnostic Bay
We had a 2011 Express 1500 work van come in that had been to three other shops. The owner had already replaced two shift solenoids and the entire valve body, but the harsh 1-2 shift and intermittent limp mode persisted. The issue wasn’t mechanical; it was electronic. The original TCM had developed an internal fault that would only appear when it heated up. After installing our VIN-programmed T42 TCM, the van shifted perfectly. This saved the owner from a costly, unnecessary transmission rebuild and got his business back on the road. Always check the electronics first!
Is Your Van Showing These Symptoms?
A failing TCM will make its presence known through a variety of performance issues. If you’re experiencing any of the following, it’s highly likely your TCM is the culprit:
- ✔ Harsh & Erratic Shifting: Experiencing sudden, jerky shifts between gears or a noticeable delay when moving from Park to Drive or Reverse.
- ✔ Limp Mode Activation: The vehicle is stuck in a single gear (usually 2nd or 3rd) to prevent further damage, severely limiting speed and performance.
- ✔ Warning Lights: The Check Engine Light or a specific transmission warning light is illuminated on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs): A scan tool reveals codes like P0700 (Transmission Control System Malfunction), P0750-P0758 (Shift Solenoid errors), or other transmission-related faults.
- ✔ Poor Fuel Economy: Inefficient shifting and torque converter lock-up caused by the faulty module can lead to a significant drop in miles per gallon.
- ✔ Complete Loss of Shifting: In severe cases, the transmission may fail to engage gears or shift at all, leaving you stranded.
The Superior Solution: A Programmed Express 1500 TCM
Don’t settle for a generic, unprogrammed module that requires additional costs and hassle. Our T42 Transmission Control Module is the smart, efficient solution for your 2006-2014 Chevrolet Express 1500. We take your vehicle’s VIN during checkout and flash the module with the latest, most stable GM software specifically for your van’s configuration. This process ensures that the module communicates perfectly with your vehicle’s Engine Control Module (ECM) and other systems right out of the box. This tailored programming optimizes shift points, torque converter clutch engagement, and fuel efficiency, restoring the smooth operation you expect.
Effortless Installation Process
Replacing your Express 1500 TCM is a straightforward job that can be completed in under 30 minutes with basic hand tools. On most 2006-2014 Express and Savana vans, the TCM is conveniently located in the engine compartment on the right-hand (passenger) side, making it easily accessible.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the Module: Identify the TCM on the passenger side of the engine bay.
- Disconnect: Carefully unplug the electrical connectors from the old module.
- Remove: Unbolt the old TCM from its mounting bracket.
- Install New Module: Bolt the new, pre-programmed TCM into place.
- Reconnect: Securely plug in the electrical connectors and reconnect the battery terminal.
- Final Step: Use a standard OBD2 scan tool to clear any stored diagnostic trouble codes.
This module is a direct replacement for a wide range of GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E, and is interchangeable with numerous part numbers including 24234503, 24230461, and 24256960. By choosing this part, you’re getting a reliable component that meets or exceeds OEM standards, backed by a one-year warranty for your peace of mind.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. This Transmission Control Module arrives at your door fully pre-programmed to your vehicle’s specific VIN. It is ready for immediate installation, saving you time and the high cost of dealership programming services.
Where do I provide my vehicle’s VIN?
You will be prompted to enter your vehicle’s 17-digit VIN during the checkout process. This is a crucial step to ensure we program the module correctly for your specific vehicle configuration.
Is there a core charge for my old module?
No, there is no core charge associated with this part. You can keep your old module without the hassle of needing to ship it back.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating that the TCM has detected a problem and has requested the check engine light to be turned on. While this module often corrects the root cause of the P0700 code (such as internal TCM failure or solenoid command faults), it is essential to have a full diagnostic scan to confirm the specific underlying issue.
What tools are required for installation?
Installation typically only requires basic hand tools, such as a socket set and ratchet to remove the mounting bolts. No specialized equipment is needed.