If your 2006-2014 GMC Savana 3500 work van is experiencing unpredictable shifting, getting stuck in gear, or throwing transmission codes, your Transmission Control Module (TCM) is the likely culprit. As a technician with over two decades of experience, I’ve seen countless work vehicles sidelined by a faulty TCM, costing their owners time and money. This isn’t just an inconvenience; it’s a direct hit to your bottom line. This T42 TCM, part number 24239224, is the reliable, dealership-free solution to get your van’s transmission operating smoothly and dependably again.
The TCM is the electronic brain of your automatic transmission, controlling everything from shift points and line pressure to torque converter lockup. When it fails, communication breaks down, leading to the frustrating symptoms you’re likely facing. Our solution is a high-quality T42 module that comes fully programmed to your van’s specific Vehicle Identification Number (VIN). This means no expensive trips to the dealer for programming—it’s a true plug-and-play fix that you or your mechanic can install in under an hour, getting you back on the road and back to work.
Case Study: The Overlooked TCM Failure
A local contractor brought in his ’09 Savana 3500, complaining of intermittent, harsh 1-2 shifts and occasionally getting stuck in 3rd gear (limp mode), especially on hot days. He’d already spent a small fortune at another shop that suspected a bad shift solenoid and wanted to drop the pan. I hooked up my scanner and saw a generic P0700 code, but no specific solenoid faults. Experience told me to look at the module first. Heat soak is a classic killer of these T42 TCMs. We swapped in one of our VIN-programmed units, and the problem vanished instantly. The van was back in service the same afternoon, saving the owner from a costly and unnecessary internal transmission repair. This is a perfect example of why diagnosing the electronics first is critical for a 2006-2014 Savana 3500 TCM.
Is Your Van’s Transmission Acting Up?
A failing TCM can mimic internal transmission problems. Before you authorize an expensive teardown, check if your vehicle is showing these common electronic failure symptoms:
- ✔ Harsh, banging shifts or delayed gear engagement.
- ✔ Vehicle is stuck in “limp mode” and won’t shift out of 2nd or 3rd gear.
- ✔ The Check Engine Light or a transmission warning light is on.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700 (Transmission Control System Malfunction), P0750, or other solenoid-related codes.
- ✔ A noticeable drop in fuel economy or a feeling of sluggish performance.
- ✔ Complete loss of communication with the transmission module.
Quick & Easy Installation Guide for Your Savana Van
Replacing the 2006-2014 Savana 3500 TCM is a straightforward job that most DIYers can handle with basic tools. The module is conveniently located for easy access.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the system.
- Locate the Module: On the Savana 3500 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, VIN-programmed TCM into place and securely reconnect the electrical harnesses. Ensure they click into place.
- Final Steps: Reconnect the battery terminal. Start the vehicle and let it idle for a few minutes. While the module is pre-programmed, it’s good practice to use a basic scan tool to clear any stored fault codes from the ECU.
Why Choose Our VIN-Programmed TCM?
This isn’t just a replacement part; it’s a comprehensive repair solution. We handle the complex part so you don’t have to.
- ✔ VIN Programmed & Ready to Install: We flash the module with the latest GM software and your vehicle’s VIN, ensuring perfect communication and performance right out of the box.
- ✔ OEM-Standard Reliability: Built to meet or exceed original equipment specifications for a long-lasting, dependable repair.
- ✔ No Core Charge: Keep your old part. There are no hidden fees or hassles with returning a core.
- ✔ Broad Interchangeability: This T42 module replaces a wide range of part numbers, including 24252114, 24234503, 24239224, 24256960, and more, guaranteeing you get the right component.
Verified Fitment for GM Trucks, Vans, and SUVs
While this is the correct 2006-2014 Savana 3500 TCM, it also fits a wide array of other General Motors vehicles. Please verify your model and location below:
- GMC Savana 1500/2500/3500 Van (2006-2014): Transmission; (RH engine compartment)
- Chevrolet Express 1500/2500/3500 Van (2006-2014): Transmission; (RH engine compartment)
- GMC Sierra & Chevrolet Silverado 1500/2500 (2007-2013): Transmission; (next to battery)
- GMC Yukon & Chevrolet Tahoe/Suburban (2007-2009): Transmission; (next to battery)
- Cadillac DTS (2006-2011): Transmission; (RH front engine compartment)
- Hummer H3 (2008-2010): Transmission; (RH rear engine compartment)
- …and many other GM cars, trucks, and SUVs from 2006-2014.
Why is VIN programming so important for a TCM?
Why is VIN programming so important for a TCM?
The TCM must communicate perfectly with your vehicle’s other computers, like the Engine Control Module (ECM). VIN programming loads the specific software and calibration files for your Savana’s engine, transmission type, and options. Without it, the transmission won’t shift correctly, or the vehicle may not start at all.
Will this fix a P0700 trouble code?
In many cases, yes. A P0700 code is a general fault code indicating the TCM has detected a problem. If the TCM itself is the source of the electrical fault, replacing it with this pre-programmed unit will resolve the issue and allow the code to be cleared.
Where is the TCM located on my 2011 Savana 3500?
For the 2006-2014 GMC Savana and Chevrolet Express vans, the Transmission Control Module is located in the engine bay, on the right-hand (passenger side) of the vehicle. It’s typically mounted near the firewall or inner fender.
Do I need any special tools for installation?
No special tools are required. Basic hand tools, such as a socket set and ratchet to remove the mounting bolts and a wrench for the battery terminal, are all you need. The most important part—the programming—is already done for you.
Is there a warranty included with this part?
Yes, this part comes with our standard one-year warranty, giving you peace of mind that you are installing a quality, reliable component in your vehicle.