Is Your GMC Savana 3500 Shifting Erratically or Stuck in Limp Mode?
As a mechanic with over two decades of experience, I’ve seen countless work vans like the Savana 3500 sidelined by transmission problems. A faulty Transmission Control Module (TCM) is often the culprit, causing frustrating and unpredictable behavior that can bring your work to a halt. If you’re dealing with harsh gear changes, a check engine light with transmission codes, or the vehicle refusing to shift properly, you’ve come to the right place for a reliable, straightforward solution.
This T42 Transmission Control Module, part number 24235753, is the definitive fix for your 2006-2014 Savana 3500 TCM issues. We take the guesswork and extra cost out of the repair by pre-programming the module to your van’s specific Vehicle Identification Number (VIN). This means it arrives ready for a direct, plug-and-play installation, with no expensive trip to the dealership required.
A Real-World Scenario from My Shop
A contractor brought in his ’11 Savana 3500 work van. The complaint was intermittent limp modeโit would get stuck in 3rd gear, especially after a long day on the road. He’d already replaced a solenoid with no luck. After a quick scan, I saw a generic P0700 code. Knowing these T42 modules, I suspected an internal failure caused by years of heat cycles in the engine bay. We installed a VIN-programmed TCM, and the problem was solved instantly. The constant heating and cooling can cause microscopic cracks in the circuit board, leading to the exact intermittent failures that are so hard to diagnose. This module is the direct answer to that common wear-and-tear.
Symptoms of a Failing Savana 3500 TCM
If you’re experiencing any of the following, a failing TCM is the likely cause:
- โ Harsh, slamming, or delayed gear engagement.
- โ Vehicle is stuck in one gear (often called “limp mode”).
- โ The check engine light or transmission warning light is illuminated.
- โ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults.
- โ Complete loss of upshifting or downshifting capabilities.
- โ Poor fuel economy and a feeling of sluggish performance.
Plug-and-Play Installation: No Dealer Visit Required
Installing your new 2006-2014 Savana 3500 TCM is a simple job that most DIYers can complete in under 30 minutes with basic hand tools. For the Savana and Express vans, the module is easy to access.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset the system.
- Locate the Module: On the Savana 3500, the TCM is typically found in the engine compartment on the right-hand (passenger) side.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly. Then, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. You should hear a click as they lock in.
- Final Steps: Reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. While not always necessary, using a basic scan tool to clear any stored DTCs is a good final practice.
Frequently Asked Questions (FAQ)
- Q: What does ‘VIN Programmed’ actually mean?
- A: It means we load the module with your vehicle’s specific software from GM, using the VIN you provide at checkout. This ensures it communicates perfectly with your engine and transmission, just like the original part, without needing dealer tools.
- Q: Do I need to send my old TCM back?
- A: No, there is no core charge for this part. You can keep or dispose of your old module, making the process faster and more convenient for you.
- Q: Will this fix a P0700 trouble code?
- A: The P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause (like an internal short), it’s always wise to ensure the transmission wiring and solenoids are in good condition.
- Q: Is this compatible with other GM vehicles?
- A: Yes, this T42 TCM fits a wide range of GM vehicles from 2006-2014, including the Silverado, Tahoe, Impala, and many more. This specific listing is tailored for the 2006-2014 Savana 3500 TCM replacement, but the part itself is widely used.
Guaranteed Compatibility
This module is a direct replacement for part number 24235753 and interchanges with several other service numbers, including: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24238856, 24239224, and more. Get your van back to work with a reliable, ready-to-install part.