Get Your Work Van Back on the Road: A Reliable Fix for Transmission Faults
If you rely on your 2006-2014 GMC Savana 2500 for work, you know that downtime isn’t an option. When your transmission starts acting up—slamming into gear, refusing to shift, or putting the van into limp mode—it’s not just an annoyance; it’s a threat to your livelihood. As a technician with over two decades of experience, I’ve seen countless work vans sidelined by a faulty Transmission Control Module (TCM). The issue often isn’t a catastrophic mechanical failure, but rather a problem with the electronic brain that manages the transmission. This is where our pre-programmed T42 TCM, part number 24243921, becomes the most effective and efficient solution.
This isn’t just a replacement part; it’s a complete fix in a box. We take a high-quality T42 module and program it specifically to your van’s Vehicle Identification Number (VIN) before it ever leaves our shop. This means you can skip the expensive trip to the dealership for programming. For a professional mechanic, this saves valuable bay time. For the DIY van owner, it turns a potentially complex electronic repair into a straightforward, plug-and-play installation you can do with basic hand tools. This 2006-2014 Savana 2500 TCM is engineered to restore the crisp, predictable shifting your 4L80E or other GM automatic transmission had from the factory.
Case Study: A Tricky Diagnosis
A local contractor brought in his ’09 Savana 2500. The complaint was intermittent limp mode (stuck in 3rd gear) and a P0700 (Transmission Control System Malfunction) code that would pop up randomly. He’d already replaced two shift solenoids based on a previous shop’s advice, but the problem persisted. After hooking up my scanner and monitoring live data, I noticed the TCM was intermittently losing communication. Instead of a costly transmission teardown, I recommended a new TCM. We installed one of our VIN-programmed modules, and the van was back on the job site the same afternoon, shifting perfectly. It’s a classic example of how a faulty 2006-2014 Savana 2500 TCM can mimic more serious mechanical issues.
Is Your Savana Van Showing These Telltale Signs?
- ✔ Harsh, slamming shifts or delayed gear engagement.
- ✔ Vehicle is stuck in a single gear (often called ‘limp mode’).
- ✔ Check Engine Light is on with transmission-related Diagnostic Trouble Codes (DTCs) like P0700, P0750, P0753, or other solenoid codes.
- ✔ The transmission won’t upshift or downshift correctly.
- ✔ A noticeable drop in fuel economy or signs of the transmission overheating.
- ✔ Unpredictable electrical behavior related to the transmission.
A Straightforward 30-Minute Installation Guide
You don’t need to be a master technician to install this module. The process is simple and can be completed in under 30 minutes.
- Safety First: Before you begin, disconnect the negative terminal from your vehicle’s battery. This prevents electrical shorts and helps reset the vehicle’s onboard systems.
- Locate the TCM: On the GMC Savana 2500, 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 connectors. Ensure they click into place.
- Final Steps: Reconnect the negative battery terminal. Start the vehicle and use a basic OBD2 scan tool to clear any stored trouble codes from the system. Your van is now ready for a test drive.
Verified Compatibility for Your GM Vehicle
This T42 TCM is a direct replacement for part number 24243921 and is interchangeable with many other service numbers. It is guaranteed to fit the following models (please verify location in your specific vehicle):
- GMC Savana 2500 Van (2006-2014): Transmission; (RH engine compartment)
- GMC Savana 1500/3500 Van (2006-2014): Transmission; (RH engine compartment)
- Chevrolet Express 1500/2500/3500 Van (2006-2014): Transmission; (RH engine compartment)
- Chevrolet Silverado & GMC Sierra Pickups (2007-2013): Transmission; (next to battery)
- Chevrolet Tahoe/Suburban & GMC Yukon (2007-2009): Transmission; (next to battery)
- …and many other GM cars, trucks, and SUVs from 2006-2014. See the full fitment list for details.
Stop letting transmission problems dictate your schedule. This VIN-programmed 2006-2014 Savana 2500 TCM is the reliable, cost-effective solution to get your van operating smoothly again. Order today and experience the difference a quality, ready-to-install part makes.
Frequently Asked Questions
Do I need to do any programming after I install this TCM?
No. This module is delivered to you fully programmed to your vehicle’s VIN. It is a true plug-and-play solution, saving you the time and expense of a dealership visit.
What is a ‘core charge’ and do I have to pay one?
A core charge is a deposit you pay until you return your old part. We do not require a core charge for this TCM, so you can keep your old part without any hassle or extra cost.
Where is the TCM located on my Savana 2500 Van?
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.
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. Replacing the TCM often resolves the root cause that triggers the P0700 and related specific codes (like for solenoids).
What if I install this and still have shifting problems?
While this module resolves the vast majority of electronic transmission issues, persistent problems could indicate an internal mechanical issue, faulty wiring harness, or a bad solenoid. Our pre-programmed TCM eliminates the module as the variable, allowing you or your mechanic to diagnose other potential issues more accurately.