Restore Peak Transmission Performance to Your GM Truck or SUV
Is your Silverado, Tahoe, or Sierra suffering from erratic shifting, getting stuck in gear, or throwing transmission codes? A failing Transmission Control Module (TCM) is often the culprit, disrupting the critical communication between your engine and transmission. This pre-programmed T42 Transmission Control Module is the definitive solution, engineered to restore the crisp, reliable shifting you depend on, without an expensive trip to the dealership.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty TCM is the likely cause. This module is designed to be the direct, plug-and-play fix for:
- Harsh, jerky, or delayed gear shifts
- The vehicle being stuck in “limp mode” (usually 2nd or 3rd gear)
- An illuminated Check Engine Light or Transmission Warning Light
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift properly
- Noticeably poor fuel economy and transmission overheating
Features & Tangible Benefits
- ✔ Plug-and-Play Installation: This unit arrives expertly programmed to your vehicle’s specific VIN number. This crucial step ensures it works perfectly right out of the box, eliminating the need for costly dealership programming or special tools.
- ✔ Restore Smooth Shifting: By precisely managing shift points, torque converter lockup, and line pressure, this module restores the smooth, predictable performance your vehicle had when it was new.
- ✔ Eliminate Annoying Warning Lights: Our programming process using the latest GM software updates resolves the root electronic cause of many common transmission-related DTCs, allowing you to clear the codes for good.
- ✔ Built to OEM Specifications: Engineered for durability and reliability, this module meets or exceeds original equipment standards, ensuring long-lasting performance whether you’re on the job site or on a family road trip.
- ✔ Guaranteed Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Note on VIN Programming: The TCM is the ‘brain’ of your automatic transmission. On modern GM vehicles, it’s not just a part you can swap. The module must be electronically matched to your truck’s specific VIN to communicate with the Engine Control Module (ECM) and other systems. Installing a non-programmed T42 transmission control module will, at best, not work, and at worst, can cause further electrical issues. Our pre-programming service handles this complex step for you, making the repair as simple as unbolting the old unit and plugging in the new one.
As a direct replacement for service numbers like 24252114, 24234503, and 24239926, this programmed T42 transmission control module is the most reliable and cost-effective way to get your truck back in top form. Installation is straightforward and can typically be completed in under 30 minutes with basic hand tools.
Frequently Asked Questions
What does a Transmission Control Module do?
The TCM is a computer that collects data from various sensors in your vehicle’s engine and transmission. It uses this information to control exactly when and how the transmission shifts gears, ensuring optimal performance, fuel efficiency, and smoothness.
Is this TCM difficult to install?
No, installation is designed to be straightforward for a DIYer or professional mechanic. The module is typically located in the engine compartment and requires only basic tools to replace. Because it comes pre-programmed, there are no complicated computer steps required after installation.
Will I need to go to the dealership after installation?
Absolutely not. The primary benefit of our service is that the programmed T42 transmission control module is ready for installation upon arrival. This completely bypasses the need for a dealership visit for expensive programming.
How do I know for sure that my TCM is failing?
While the symptoms listed above are strong indicators, the best way to be certain is to have a professional mechanic scan your vehicle for specific transmission-related Diagnostic Trouble Codes (DTCs). Codes like P0700 (Transmission Control System Malfunction) often point directly to a faulty TCM.
Is there a core charge for my old part?
No, there is no core charge required for this part. You can keep or dispose of your old module without the hassle of returning it.
What vehicles is this T42 TCM compatible with?
This module fits a wide range of 2006-2014 General Motors vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. This includes many Chevrolet Silverado, Tahoe, Suburban, GMC Sierra, Yukon, and Cadillac models, among others. Please verify the part number or use the fitment tool to confirm compatibility.