Is Your 2006-2014 Savana 3500 Shifting Poorly?
If your GMC Savana 3500 is experiencing erratic shifting, delayed gear engagement, or is stuck in ‘limp mode,’ a failing Transmission Control Module (TCM) is the most common cause. This critical component acts as the brain for your automatic transmission, controlling everything from shift timing to torque converter lockup. When it fails, it can lead to poor performance, decreased fuel economy, and dashboard warning lights that won’t go away. Don’t let a faulty module keep your work van off the road.
From the Diagnostic Bay
We had a local contractor bring in his 2011 Savana 3500 work van. It was stuck in third gear and the check engine light was on with a P0700 code. He was losing money every day the van was down. After confirming power and ground to the TCM, we diagnosed a failed module. Instead of a costly trip to the dealership for a new part and programming, we installed one of our VIN-programmed T42 modules. In under an hour, the van was shifting perfectly, all codes were cleared, and he was back on his way to the job site. It’s a straightforward fix that saves immense time and hassle.
The Direct Solution: A VIN-Programmed Savana 3500 Transmission Module
This T42 Transmission Control Module is the definitive solution for your vehicle’s transmission woes. We take the guesswork and extra steps out of the repair by pre-programming the unit to your van’s specific Vehicle Identification Number (VIN). This ensures that it arrives ready for a plug-and-play installation, loaded with the latest GM software updates for optimal performance. It communicates flawlessly with your vehicle’s Engine Control Module (ECM) and other systems, restoring the smooth, reliable shifting you depend on.
Common Symptoms of a Failing TCM
- ✔ Harsh, slamming, or erratic gear shifts.
- ✔ Vehicle is stuck in a single gear (limp mode), often 2nd or 3rd.
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults are present.
- ✔ Failure to upshift or downshift properly.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ The torque converter fails to lock up at highway speeds.
Installation and Compatibility
Installing your new Savana 3500 Transmission Module is a simple process. For the 2006-2014 Savana 3500, the module is typically located in the right-hand (passenger side) of the engine compartment. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Reconnect everything, and you’re ready to go. We recommend using a basic scan tool to clear any stored fault codes after installation. This module is a direct replacement for multiple part numbers, including 24242391, 24234503, and 24252114, and fits a wide array of GM vehicles from 2006-2014 equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L80E.
Frequently Asked Questions
What does ‘VIN Programmed’ mean for my TCM?
It means we flash the module with your vehicle’s specific factory software and calibration files using your VIN. This makes the part a true plug-and-play component, eliminating the need for expensive programming at a dealership.
Do I need to visit a dealer after installing this part?
No. Because the module is pre-programmed to your Savana 3500, no additional dealership visits or programming are required. This saves you time and hundreds of dollars in labor costs.
Where is the TCM located on a 2006-2014 Savana 3500?
On the Savana 2500 and 3500 vans from this era, the Transmission Control Module is located in the engine bay, on the right-hand (passenger) side.
Will this module fix a P0700 transmission code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause of the P0700 (such as internal failure), it’s important to diagnose any other potential issues. However, a faulty TCM is the most frequent reason for this code.
Is there a core charge for this part?
No, we do not require a core charge. You can keep your old part, avoiding the hassle and expense of shipping it back.