Restore Peak Transmission Performance in Your GM Vehicle
Is your 2006-2014 GMC Savana 3500 suffering from erratic shifting, getting stuck in gear, or displaying a check engine light? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth gear changes, managing torque converter lockup, and monitoring system health. When it fails, it can cripple your vehicle’s performance and reliability. This genuine quality T42 TCM, part number 24240400, is the definitive solution to restore your transmission’s factory operation.
From the Diagnostic Bay
We had a 2011 Savana 3500 work van come into the shop that was stuck in third gear—a classic limp mode symptom. The driver was convinced the transmission was shot and was bracing for a multi-thousand dollar bill. We scanned it and pulled a P0700 code along with several solenoid circuit codes. Instead of immediately quoting a new transmission, we inspected the TCM. After swapping in one of our VIN-programmed T42 modules, we cleared the codes and took it for a test drive. It shifted perfectly, just like it did off the factory line. A simple, 30-minute component replacement saved the customer a massive headache and a costly, unnecessary transmission rebuild.
Is Your Vehicle Exhibiting These Symptoms?
- ✔ Harsh, delayed, or unpredictable gear shifts that make driving uncomfortable.
- ✔ The vehicle enters “limp mode,” often getting stuck in 2nd or 3rd gear.
- ✔ Your dashboard is lit up with a Check Engine Light or Transmission Warning Light.
- ✔ Diagnostic scans reveal generic transmission codes like P0700 or specific solenoid codes (e.g., P0750, P0753).
- ✔ A noticeable decrease in fuel economy due to inefficient shifting.
- ✔ The transmission feels like it’s slipping or failing to engage gears properly.
- ✔ Complete loss of shifting capability, leaving you stranded.
Why Choose Our Programmed Savana 3500 Transmission Module?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. The most critical feature is our complimentary VIN programming service. When you order, we flash the module with your vehicle’s specific Vehicle Identification Number and the latest GM software updates. This ensures perfect communication between the TCM, the engine computer, and other vehicle systems. You get a true plug-and-play installation without the need for an expensive trip to the dealership for programming. This simple step resolves common diagnostic trouble codes and ensures optimal shift patterns and fuel efficiency from the moment you install it.
Built for Durability and Precision
Engineered to meet and exceed original equipment manufacturer standards, this T42 TCM provides dependable, long-lasting performance. It precisely controls hydraulic pressure and shift solenoid timing, which translates to smoother gear changes, reduced transmission wear, and a better driving experience. Whether you use your Savana for heavy-duty work or daily transportation, this module is built to handle the demand. We back its quality with a one-year warranty for your peace of mind.
Simple Installation to Get You Back on the Road
Designed for straightforward installation, this module can be replaced in under 30 minutes with basic hand tools. On the GMC Savana 3500, the TCM is typically located in the engine compartment on the right-hand side. Before you begin, always disconnect the vehicle’s battery to prevent electrical issues and help reset the system. Once the new module is installed, reconnect the battery and use a standard OBD2 scan tool to clear any lingering fault codes. Best of all, there is no core charge, so you don’t have to worry about the cost or hassle of sending your old part back.
Frequently Asked Questions
What does a Transmission Control Module (TCM) do?
The TCM is a computer that controls your automatic transmission. It collects data from various sensors in the engine and transmission to determine the perfect moment to shift gears, control fluid pressure, and engage the torque converter. A properly functioning TCM is essential for smooth performance, fuel economy, and transmission longevity.
Is this TCM difficult to install on my Savana 3500?
No, installation is designed to be simple for a DIY mechanic or professional. For the 2006-2014 Savana 3500, the module is easily accessible in the engine bay. With basic tools, the swap can typically be completed in under 30 minutes. Just remember to disconnect the battery first.
What does “VIN Programmed” mean and why is it important?
VIN programming means we load the module with your vehicle’s specific software before shipping it. This makes it a true plug-and-play part, as it’s already calibrated for your Savana’s engine, tire size, and other factory specifications. This step eliminates the need for expensive dealer programming and ensures flawless communication with your vehicle’s other computers.
Will this part fix transmission error codes like P0700?
Yes. A P0700 code is a general fault code indicating the TCM has detected a problem. A faulty TCM is often the root cause. Replacing it with this pre-programmed unit will typically resolve P0700 and related solenoid codes, clearing your check engine light after installation and a code clear.
Do I need to send my old part back?
No, there is absolutely no core charge for this part. You can keep your old module or dispose of it at your convenience without any additional fees or hassle.