Restore Peak Performance to Your Van’s Transmission
Is your 2006-2014 Chevrolet Express 1500 van plagued by transmission troubles? If you’re experiencing unpredictable shifting, getting stuck in gear, or seeing warning lights on your dash, a failing Transmission Control Module (TCM) is a very common cause. This critical component acts as the brain for your automatic transmission, and when it fails, it can cause a cascade of performance issues that can sideline your vehicle. This replacement GM T42 TCM, service number 24239224, is the definitive solution to restore your transmission’s smooth, reliable operation.
Engineered to meet or exceed original equipment specifications, this module is pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). This crucial step ensures complete compatibility with your van’s systems right out of the box, eliminating the need for expensive dealership programming or complex calibration procedures. Get your Express 1500 back to work with a dependable, plug-and-play solution.
From the Diagnostic Bay
We recently had a 2009 Express 2500 work van towed to the shop. The complaint was a harsh 1-2 shift and a persistent P0700 code. The owner had already paid another shop to replace two shift solenoids inside the transmission, but the problem remained. When we scanned the vehicle, we saw that the TCM was commanding the shifts erratically. Instead of a costly internal repair, we installed one of our VIN-programmed T42 modules. After a 20-minute installation and clearing the codes, the van shifted perfectly. This is a classic example of how a faulty electronic controller can mimic an internal mechanical failure, and why replacing the TCM is often the correct, cost-effective repair.
Is Your Express 1500 Exhibiting These TCM Failure Symptoms?
- ✔️ Erratic or Harsh Shifting: Experiencing sudden, jerky gear changes or banging into gear.
- ✔️ Delayed Engagement: A noticeable pause when shifting from Park to Drive or Reverse.
- ✔️ Stuck in Limp Mode: The vehicle will not shift out of a single gear (usually 2nd or 3rd) to protect the transmission from further damage.
- ✔️ Warning Lights: The Check Engine Light or a specific transmission warning light is illuminated on your dashboard.
- ✔️ Diagnostic Trouble Codes (DTCs): Common codes like P0700, P0750, or other solenoid-specific faults are stored in the system.
- ✔️ Poor Fuel Economy: Inefficient shifting and torque converter lock-up issues can lead to a significant drop in MPG.
- ✔️ No Communication: A scan tool is unable to communicate with the TCM, indicating a complete module failure.
Key Features of Our Programmed 2006-2014 Express 1500 TCM
This isn’t just a replacement part; it’s a comprehensive fix for your transmission woes. By addressing the electronic control issues, you restore the mechanical integrity and performance of your entire drivetrain.
- Plug-and-Play Installation: We pre-program the module to your van’s VIN, loading the latest GM software updates. This ensures it works seamlessly with your engine control module (ECM) and other vehicle systems without any additional setup.
- Restores Smooth Operation: Correctly manages shift points, line pressure, and torque converter lockup, eliminating harsh shifts and gear hunting for a like-new driving experience.
- Cost-Effective Solution: Avoids the high costs and scheduling hassles associated with dealership programming. This is a DIY-friendly repair that saves you time and money.
- OEM-Quality Build: Constructed to rigorous standards for durability and longevity, ensuring reliable performance whether you’re hauling cargo or using your van for daily transportation.
- No Core Charge: Keep your old part without the hassle or expense of returning a core.
Simple Installation Process
For the Chevrolet Express and GMC Savana vans from 2006-2014, the TCM is conveniently located in the engine compartment on the right-hand (passenger) side. Installation typically takes less than 30 minutes.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the TCM: Find the module on the passenger side of the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors and unbolt the old module from its bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the wiring harnesses.
- Final Steps: Reconnect the battery. While the module is plug-and-play, it’s good practice to use a scan tool to clear any old fault codes from the vehicle’s memory.
Don’t let a faulty TCM keep your reliable Express van off the road. This VIN-programmed T42 module is the most efficient and dependable way to solve your transmission problems and restore the performance you count on. Order yours today!
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we flash the module with the specific software and calibration files from GM that match your van’s unique Vehicle Identification Number. This makes the TCM communicate perfectly with your vehicle’s engine and other systems, just like the original part from the factory, ensuring optimal performance without any additional programming.
Will I need to take my van to a dealer after installing this part?
No. The VIN programming we perform before shipping eliminates the need for any dealership intervention. This is a true plug-and-play solution, designed to save you time and the high cost of dealer programming services.
Where is the TCM located on a 2006-2014 Chevy Express?
On the Express and Savana van platform, the Transmission Control Module is typically found in the engine compartment, mounted on the right-hand (passenger) side.
Will this module fix a P0700 trouble code?
A P0700 code is a general fault code indicating that the TCM has detected a problem and has requested the Check Engine Light be turned on. While the P0700 itself doesn’t specify the issue, it is very often triggered by an internal failure of the TCM. Replacing a faulty TCM will resolve the underlying issue and allow you to clear the code permanently.
Is this compatible with other GM vehicles?
Yes, this T42 TCM is compatible with a wide range of 2006-2014 GM trucks, vans, and SUVs equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. This includes models like the Silverado, Sierra, Tahoe, Yukon, and more, as listed in the fitment guide.