Restore Smooth, Reliable Shifting to Your GM Vehicle
Experiencing harsh, erratic shifting or a transmission stuck in limp mode? A faulty Transmission Control Module (TCM) is often the culprit, turning your reliable GM truck, van, or SUV into a source of daily stress. This OEM-quality T42 TCM, service number 24240449, is the definitive solution, arriving expertly pre-programmed to your vehicle’s specific VIN. This eliminates the need for expensive dealership programming, allowing for a straightforward, plug-and-play installation that gets you back on the road with confidence.
Common Symptoms & Your Solution
If your vehicle is exhibiting any of the following signs, a failing TCM is the likely cause. This module is engineered to directly resolve these issues:
- Harsh or Delayed Shifting: Abrupt gear changes, hesitation, or slipping between gears.
- Limp Mode Activation: The vehicle is stuck in a single gear (usually 2nd or 3rd) with significantly reduced power.
- Warning Lights: A persistent Check Engine Light or dedicated transmission warning light on your dash.
- Diagnostic Trouble Codes (DTCs): Common codes include P0700 (Transmission Control System Malfunction) and various solenoid-specific codes (e.g., P0750, P0751, P0753).
- Poor Performance: A noticeable drop in fuel efficiency, incorrect gear selection, or a complete failure to shift.
Installing our Programmed T42 Transmission Control Module is the most effective way to correct these problems, restoring the precise, factory-intended operation of your automatic transmission.
Features & Benefits
- ✔ Ready to Install: Each module is pre-programmed with the latest GM software updates using your vehicle’s VIN. This ensures perfect communication between the transmission and engine for optimal performance right out of the box.
- ✔ Restore Peak Performance: By precisely managing shift points, torque converter lockup, and line pressure, this TCM brings back the smooth operation and fuel economy you expect from your vehicle.
- ✔ OEM-Standard Quality: Manufactured to meet or exceed strict General Motors specifications, ensuring long-lasting durability and reliability whether you’re on the job site or on a family road trip.
- ✔ Guaranteed Fitment: This module is a direct replacement for a wide range of original part numbers, including 24252114, 24234503, 24240400, and more, providing a perfect fit for dozens of GM models.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Insight: Get Your Work Truck Back on the Road, Fast
For a small business owner or contractor, a work van like the Savana or a truck like the Silverado isn’t just a vehicle—it’s a critical tool. When the transmission starts acting up, every day it’s down means lost time and lost income. The biggest hurdle is often the complex and costly process of getting a new module programmed at a dealership. Our Programmed T42 Transmission Control Module completely bypasses that delay. It arrives ready to install, turning a multi-day repair into a job that can be done in under an hour, saving you money on both labor and vehicle downtime.
Frequently Asked Questions
What does a VIN-programmed TCM do?
VIN programming loads your vehicle’s specific software and calibration files onto the module before it ships. This ensures the TCM works perfectly with your engine, transmission, and other electronic systems without needing any additional setup or expensive tools, just like the original part from the factory.
Is this a plug-and-play installation?
Yes. Because the module is pre-programmed to your VIN, the installation is a direct ‘plug-and-play’ process. Simply disconnect the battery, remove the old module, install the new one, and reconnect the battery. We recommend clearing any old codes with a standard scan tool after installation.
How do I know if my TCM is the problem?
Common signs of a failing TCM include erratic shifting, getting stuck in one gear (limp mode), the check engine light illuminating with transmission-related codes (like P0700), and poor fuel economy. If you are experiencing several of these symptoms, the TCM is a very likely culprit.
Where is the TCM located on my vehicle?
Location varies by model. Common locations include the engine compartment on the RH or LH side, next to the battery, under the air cleaner box, or on the LH strut tower. The provided fitment list gives specific locations for many compatible vehicles.
Do I need to return my old part?
No, there is no core charge for this part. You can keep your old module without any extra fees or hassle, simplifying the repair process.
Will this fix specific transmission codes?
Yes, this Programmed T42 Transmission Control Module is designed to resolve issues that trigger common diagnostic trouble codes, including the general P0700 code and various solenoid performance codes, by restoring proper electronic control over the transmission.