Get Your Work Van Back on the Road, Fast
Is your 2006-2014 Chevrolet Express 3500 van letting you down with unpredictable shifting, a flashing check engine light, or getting stuck in gear? A faulty Transmission Control Module (TCM) can bring your work to a grinding halt, costing you time and money. This OEM-quality T42 TCM is the definitive solution, arriving pre-programmed to your van’s specific VIN for a true plug-and-play installation that gets you back in business without a costly trip to the dealership.
Common Symptoms & Your Solution
A failing TCM can cause a host of frustrating and potentially damaging issues. If you’re experiencing any of the following, this module is designed to be the direct fix:
- Harsh or Erratic Shifting: Abrupt, jerky gear changes or delayed engagement from park to drive or reverse.
- Limp Mode: The vehicle is stuck in a single gear (usually 2nd or 3rd) to prevent further damage.
- Warning Lights: A persistent Check Engine Light or Transmission Warning Light on your dash.
- Diagnostic Trouble Codes (DTCs): Common codes like P0700 (Transmission Control System Malfunction), P0750-P0758 (Shift Solenoid Errors), or other transmission-related faults.
- Poor Performance: A noticeable drop in fuel efficiency, failure to upshift or downshift, or a feeling of slipping gears.
Installing this pre-programmed Express 3500 Transmission Control Module directly addresses the electronic source of these problems, restoring crisp, reliable shifting and clearing fault codes for good.
Features & Benefits
- ✔ 100% Plug-and-Play: This module is expertly programmed to your vehicle’s unique VIN before shipping. This eliminates the need for expensive dealership programming or special tools, saving you hundreds of dollars and significant downtime.
- ✔ Restored Drivability: By precisely managing shift points, torque converter lockup, and line pressure, this TCM restores the smooth, efficient performance your work van had from the factory.
- ✔ Dependable OEM-Standard Quality: Built to meet or exceed original equipment specifications, ensuring it can handle the daily demands of a commercial vehicle. It’s the reliable fix your business depends on.
- ✔ No Core Charge: Keep your old part without the hassle or expense of a core return. The price you see is the price you pay.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
Expert Insight: The Cost of Ignoring a Bad TCM
For a work vehicle like the Express 3500, a failing TCM isn’t just an inconvenience—it’s a threat to your bottom line. Continuing to drive with erratic shifting can cause excessive wear on internal transmission components like clutches and bands, turning a straightforward electronics repair into a major mechanical overhaul. Replacing the module at the first sign of trouble is the smartest investment you can make to protect your transmission and ensure your van is always ready for the next job.
Don’t let a faulty computer sideline your most important tool. This Express 3500 Transmission Control Module is the most efficient and reliable way to solve your transmission problems and get back to work. Order yours today!
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean for me?
It means the module arrives ready for installation right out of the box. We load your van’s specific Vehicle Identification Number (VIN) and the latest GM software onto the unit before we ship it. This ensures it communicates perfectly with your engine computer and other systems, just like the original part, without any need for a dealership visit.
Is this part difficult to install myself?
For someone with basic mechanical skills, installation is straightforward. On most 2006-2014 Express vans, the TCM is located in the engine compartment on the right-hand side. The process typically involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. It can usually be completed in under 30 minutes.
Will this fit models other than the Express 3500?
Yes, this T42 TCM is compatible with a wide range of GM vehicles from this era that use 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. This includes many Silverado, Tahoe, Sierra, and Savana models. Please check the detailed fitment list on this page to confirm compatibility with your specific vehicle.
Do I need to clear any codes after installation?
While disconnecting the battery will clear most codes, we recommend using a basic OBD2 scan tool to clear any stored or pending transmission-related DTCs after installation. This ensures the system starts fresh with the new module.
What happens if I don’t replace a failing TCM?
Ignoring the symptoms of a bad TCM can lead to serious and expensive consequences. Continued harsh shifting can cause premature wear and tear on internal transmission parts, potentially leading to a complete transmission failure that requires a full rebuild or replacement, costing thousands of dollars.