Restore Peak Performance to Your Chevy Express Van’s Transmission
As a mechanic with over two decades of experience, I’ve seen countless work vans like the Chevrolet Express 1500 come into the shop with frustrating transmission problems. A faulty Transmission Control Module (TCM) is often the culprit, causing everything from harsh, unpredictable shifting to the van being stuck in limp mode. Your van is your livelihood, and downtime is not an option. This T42 TCM, part number 24240400, is the reliable, straightforward solution you need. It arrives fully programmed to your van’s specific VIN, eliminating the need for expensive dealership visits and getting you back to work fast.
The TCM is the brain of your automatic transmission, managing shift points, torque converter clutch engagement, and line pressure. When it fails, communication breaks down, leading to poor performance, decreased fuel economy, and potential damage to the transmission itself. This replacement module restores that critical communication, ensuring the 4L60E or 4L65E transmission in your van operates exactly as the factory intended. We load the latest GM software updates during programming, so you’re getting a part that’s not just a replacement, but a definitive fix for common electronic issues.
Case Study: The Fleet Van That Couldn’t Shift
A local contractor brought in his 2011 Express 1500, complaining it was stuck in 3rd gear and the check engine light was on. His scan tool showed a P0700 (Transmission Control System Malfunction) and a handful of solenoid circuit codes. He was worried about a costly transmission rebuild. After a quick diagnostic, I confirmed the TCM itself was failing intermittently. Instead of a multi-day, thousand-dollar repair at the dealer, we ordered one of these VIN-programmed modules. It arrived the next day, I installed it in under 30 minutes right in the engine bay, and the van was shifting perfectly. He was back on the job site that afternoon, saving significant time and money.
Is Your Van’s Transmission Sending These Signals?
- ✔ Harsh, clunky, or erratic gear shifts.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear only).
- ✔ Check Engine Light or Transmission Warning Light is illuminated with codes like P0700, P0750, or other solenoid-related DTCs.
- ✔ Failure to upshift or downshift properly, leading to poor acceleration.
- ✔ A noticeable drop in fuel efficiency.
- ✔ Complete loss of communication with the TCM, preventing the vehicle from starting or shifting.
Your Solution: The 2006-2014 Express 1500 TCM
This isn’t just another part; it’s a comprehensive solution. By providing your VIN at checkout, you receive a module that is a direct, plug-and-play fit for your specific vehicle configuration. This pre-programming is the key to a successful and simple repair, a service that once required specialized dealer equipment. Built to meet or exceed OEM specifications and backed by our one-year warranty, this module provides the reliability your work van demands.
Get Your Express Van Back in Service: A 30-Minute Install Guide
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset the system.
- ✔ Locate the TCM: On the Express 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.
- ✔ 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 negative battery terminal. While the system often resets, it’s best practice to use a basic OBD2 scan tool to clear any stored diagnostic trouble codes (DTCs). Start the van and test drive to confirm smooth shifting.
Verified Compatibility for Your GM Vehicle
This T42 TCM (interchangeable with part numbers 24252114, 24234503, 24230461, 24239224, 24240400, etc.) is a direct fit for a wide range of GM vehicles. While this listing is focused on the Express Van, it is also compatible with the following models. Always verify your part number for a perfect match.
- Chevrolet Express 1500/2500/3500 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 from 2006-2014.
What does ‘VIN Programmed’ mean for me?
It means we flash the module with your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM software before shipping. This ensures it communicates perfectly with your van’s engine computer and other systems right out of the box, with no extra programming needed.
Do I need any special tools for this installation?
No special tools are required. Basic hand tools like a socket set to remove the mounting bolts and disconnect the battery are all you need. An OBD2 scanner is recommended to clear codes, but not always necessary.
Is there a core charge for my old TCM?
No, there is no core charge. You can keep your old part or dispose of it without the hassle of returning it, simplifying your repair process.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While a failing TCM is a very common cause, this code can also be triggered by other issues. However, if you’re also experiencing symptoms like erratic shifting or limp mode, replacing the TCM is the most likely solution.
How do I provide my VIN for programming?
You can enter your 17-digit VIN during the checkout process. Please double-check it for accuracy, as the programming is specific to the VIN you provide.