Restore Peak Performance to Your Workhorse Van
Is your 2006-2014 GMC Savana 3500 experiencing frustrating and unpredictable transmission problems? Issues like harsh, slamming shifts, delayed gear engagement, or being stuck in “limp mode” can sideline your vehicle, costing you time and money. These are classic signs of a failing Transmission Control Module (TCM), the electronic brain responsible for orchestrating your van’s automatic transmission. Don’t let a faulty module dictate your van’s reliability. This genuine GM T42 TCM, service part 24235340, is the definitive solution, arriving pre-programmed to your van’s specific Vehicle Identification Number (VIN) for a true plug-and-play installation.
From the Diagnostic Bay
We recently had a customer with a 2011 Savana 3500 work van that was shifting erratically and throwing a P0751 (Shift Solenoid ‘A’ Performance/Stuck Off) code. The owner had already spent hundreds replacing the solenoid pack inside the transmission pan, but the problem persisted. After a quick diagnostic check, we identified the root cause: the TCM itself was sending faulty signals. Instead of another costly internal repair, we installed one of our VIN-programmed T42 modules. The van was back on the road in under an hour, shifting perfectly, with the code cleared for good. This highlights how correctly diagnosing the TCM first can save significant time and expense.
Identifying a Failing Savana 3500 Transmission Module
The TCM is a critical component, and its failure can manifest in various ways, often mimicking mechanical transmission issues. Before you consider a costly transmission rebuild, check for these common electronic symptoms. A faulty module can disrupt communication between the engine and transmission, leading to poor performance, decreased fuel efficiency, and potentially unsafe driving conditions. Replacing it is often the most direct path to resolving these complex electronic issues.
Common Symptoms of TCM Failure
- ✔ Harsh, erratic, or delayed gear shifts that make driving uncomfortable.
- ✔ The vehicle gets stuck in a single gear (limp mode), typically 2nd or 3rd, to prevent further damage.
- ✔ Check Engine Light or Transmission Warning Light is illuminated on the dashboard.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as P0700, P0750, or other solenoid-related faults.
- ✔ The transmission refuses to upshift or downshift correctly as you accelerate or decelerate.
- ✔ A noticeable drop in fuel economy due to inefficient gear management.
- ✔ Complete loss of transmission function or intermittent electrical problems.
The Advantage of a VIN-Programmed Solution
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the hassle out of the repair by programming the module with the latest GM software updates specific to your Savana 3500’s VIN. This crucial step ensures that the TCM communicates flawlessly with your vehicle’s other systems, including the Engine Control Module (ECM) and Body Control Module (BCM), right out of the box. You get optimal shift points, correct torque converter lockup, and reliable performance without needing an expensive trip to the dealership for programming.
Built to strict OEM standards, this module guarantees the durability and reliability your work van demands. It’s a direct replacement for a wide range of part numbers, including 24252114, 24234503, and 24242391, making it a versatile fix for many GM vehicles from this era. With a one-year warranty and no core charge, you can make this repair with complete confidence.
Frequently Asked Questions
What is VIN programming and why is it important?
VIN programming is the process of loading your vehicle’s specific software and calibration files onto the module before it ships. This ensures the TCM works perfectly with your Savana’s engine, transmission type, and options, making the installation plug-and-play and avoiding compatibility issues.
Do I need to take my van to a dealership after installation?
No. Because this module arrives pre-programmed to your VIN, you do not need to visit a dealer or a mechanic with special tools for additional programming. It is ready to install and function immediately.
Where is the TCM located on a 2006-2014 Savana 3500?
On the GMC Savana and Chevrolet Express vans from this year range, the Transmission Control Module is typically located in the engine compartment on the right-hand (passenger) side.
Will this module fix specific error codes like P0700?
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 fault, replacing it with this programmed unit will resolve the code and the underlying issue causing it, such as solenoid circuit errors.
Is there a core charge for this part?
No, there is no core charge. You are not required to send your old, faulty module back to us, which simplifies the process and saves you money on return shipping.