Get Your Work Van Back on the Road, Fast.
A faulty transmission control module in your Chevy Express 3500 isn’t just an inconvenience—it’s a roadblock to getting your job done. When your van is experiencing harsh shifting, getting stuck in gear, or throwing transmission codes, you need a reliable solution that minimizes downtime. This T42 Transmission Control Module (TCM) is the definitive answer, arriving pre-programmed to your vehicle’s specific VIN for a true plug-and-play installation. Get back the smooth, predictable performance you depend on without a costly and time-consuming trip to the dealership.
Common Symptoms & Your Solution
If you’re dealing with any of the following issues, a failing TCM is the likely culprit. This module is engineered to resolve these exact problems:
- Harsh, erratic, or delayed gear shifts
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Check Engine Light or transmission warning light is on
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift, leading to poor acceleration and fuel economy
- Complete loss of communication with the transmission
Installing this pre-programmed 2006-2014 Express 3500 TCM directly addresses the electronic brain of your transmission, restoring crisp shifts and proper communication between the engine and drivetrain.
Features & Benefits
- ✔ VIN-Programmed for Your Van: This module arrives ready for installation. We program it using the latest GM software updates for your specific VIN, ensuring perfect compatibility and performance right out of the box. No dealer programming required.
- ✔ Restores Dependable Performance: By precisely managing shift points, torque converter lockup, and line pressure, this TCM eliminates frustrating shifting problems and restores the reliable operation your work demands.
- ✔ Built to OEM Standards: Engineered for durability and longevity, this module is built to handle the rigorous demands of a commercial vehicle, ensuring it performs reliably day in and day out.
- ✔ Simple & Straightforward Installation: Located in the right-hand side of the engine compartment, this part can typically be swapped in under 30 minutes with basic tools. No core charge means you can keep your old part without hassle.
- ✔ Guaranteed Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: The Real Cost of a Bad TCM
As a technician, I’ve seen firsthand how a failing TCM can cripple a business. It’s not just the repair bill. It’s the lost jobs, the delayed deliveries, and the damage to your reputation when your work van is out of commission. The biggest advantage of a pre-programmed module is speed. Instead of towing your van to a dealer, waiting for a diagnosis, and then waiting again for programming, you can have the correct part delivered and install it yourself in less than an hour. For a work vehicle like the Express 3500, that saved time translates directly into saved money. This 2006-2014 Express 3500 TCM is the fastest path from a problem to a running, earning vehicle.
Frequently Asked Questions
Do I need to have a dealership program this module?
No. This module comes fully programmed to your vehicle’s VIN before it ships. It is ready for a plug-and-play installation, saving you the time and expense of a dealership visit.
What are the most common signs my Express 3500 TCM is failing?
The most common symptoms include harsh or unpredictable shifting, the vehicle being stuck in one gear (limp mode), a lit check engine light with codes like P0700, and poor fuel mileage. This 2006-2014 Express 3500 TCM is designed to correct these issues.
Where is the TCM located on my 2006-2014 Express van?
On the Chevrolet Express and GMC Savana vans from this era, the Transmission Control Module is typically found in the engine compartment on the right-hand (passenger) side.
Is this a difficult part to install myself?
For someone with basic mechanical skills, the installation is very straightforward. It involves disconnecting the battery, unplugging the electrical connectors, unbolting the old module, and installing the new one. The entire process usually takes less than 30 minutes.
What happens if I continue driving with a bad TCM?
Continuing to operate your vehicle with a faulty TCM can lead to worsening driveability issues, increased strain on mechanical components, and can eventually cause severe internal damage to your transmission, leading to a much more expensive repair.
Does this part come with a warranty?
Yes, this unit is backed by our one-year replacement warranty, giving you confidence in your repair.