Get Your Workhorse Back on the Road
When your 2006-2014 GMC Savana 2500 is down, your business is down. A faulty Transmission Control Module (TCM) can bring your operations to a grinding halt with unpredictable shifting, a check engine light that won’t quit, or a van that’s stuck in limp mode. Don’t let transmission problems dictate your schedule. This genuine GM T42 TCM is the definitive, no-nonsense solution to get your van running reliably again, fast.
This isn’t just a replacement part; it’s a complete, ready-to-install fix. We pre-program each module to your van’s specific Vehicle Identification Number (VIN) before it ships. This crucial step ensures perfect communication between the transmission and the rest of your vehicle’s electronics, eliminating the need for an expensive and time-consuming trip to the dealership for programming. It’s designed to get you back to work with minimal downtime.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing TCM is the likely culprit. This module is engineered to resolve them:
- Harsh, erratic, or delayed gear shifts
- Vehicle stuck in a single gear (limp mode)
- Illuminated Check Engine Light or Transmission Warning Light
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related codes
- Failure to upshift or downshift properly
- Noticeable decrease in fuel efficiency
- Complete loss of transmission function
Installing our VIN Programmed T42 Transmission Control Module is the most direct way to correct these problems and restore the dependable performance your work van needs.
Features & Benefits
- โ Ready to Install, No Dealer Needed: Each module is professionally programmed to your Savana’s VIN. This plug-and-play design saves you hundreds of dollars and valuable time by avoiding dealership programming fees.
- โ Restores Smooth, Reliable Shifting: By precisely managing shift points, line pressure, and torque converter lockup, this module brings back the smooth, predictable operation you depend on.
- โ Built for Durability: Constructed to strict OEM standards, this T42 TCM is designed to withstand the demanding conditions of a commercial vehicle, ensuring long-lasting performance.
- โ Clear Annoying Warning Lights: Specifically resolves the root cause of many transmission-related check engine lights and DTCs, allowing you to clear codes with confidence.
- โ No Core Charge: Keep your old part without any extra hassle or hidden fees, simplifying your repair process.
- โ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
An Expert’s Note for the Savana Owner: We know your Savana is more than just a vehicleโit’s a critical tool for your business. We’ve seen countless electricians, plumbers, and delivery drivers sidelined by a bad TCM, losing a day’s work waiting for a dealership appointment. The most significant advantage of this module is the VIN programming. It turns a multi-day, high-cost repair into a simple, under-30-minute job you can do yourself. You disconnect the battery, swap the module (it’s in the engine bay on the RH side), reconnect, and you’re back in business. Itโs the smartest, most efficient fix for the professional on the move.
This VIN Programmed T42 Transmission Control Module is the reliable, cost-effective solution to get your GM vehicle’s transmission back in perfect working order. Compatible with a wide range of models equipped with 4L60E, 4L65E, 4L70E, and 4L80E transmissions, it’s the right choice for a lasting repair.
Frequently Asked Questions
What does a VIN-programmed TCM mean for me?
It means the module arrives at your door ready for immediate installation. We flash it with your vehicle’s specific software using your VIN, so it communicates perfectly with your engine and other systems right out of the box. This completely eliminates the need for a dealership to program the part, saving you time and money.
Is this a difficult part to install myself?
For most individuals with basic mechanical skills, this is a straightforward installation. On the 2006-2014 Savana vans, the TCM is located in the engine compartment on the right-hand side. The process involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. It typically takes less than 30 minutes.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the underlying issue causing the P0700 code (like a faulty solenoid circuit internal to the module), it’s always wise to have the specific secondary codes read by a scanner to confirm the diagnosis.
How do I know for sure that my TCM has failed?
Common signs include erratic shifting, getting stuck in one gear (limp mode), and specific transmission-related trouble codes. If you experience multiple of these symptoms simultaneously, especially after the vehicle has warmed up, it is a strong indicator of TCM failure. A professional diagnosis is the best way to be 100% certain.
Does this part fit other vehicles besides the Savana 2500?
Yes, absolutely. This T42 TCM is compatible with a vast range of 2006-2014 General Motors vehicles, including the Chevrolet Silverado, Tahoe, and Express; GMC Sierra and Yukon; Cadillac DTS; and many others. Please check the detailed fitment list on this page to confirm compatibility with your specific model.
What is the warranty on this module?
This unit is backed by our one-year replacement warranty, giving you confidence and peace of mind in your purchase.