Restore Your Transmission’s Performance and Reliability
Is your GMC Sierra, Chevy Silverado, or other GM vehicle suffering from harsh, unpredictable shifting, getting stuck in limp mode, or throwing transmission-related check engine lights? A faulty Transmission Control Module (TCM) is often the culprit, disrupting communication and causing major drivability issues. This expertly prepared T42 Transmission Control Module is the definitive, plug-and-play solution to restore your transmission’s smooth, factory-fresh performance and get you back on the road with confidence.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing TCM is the likely cause. This module is designed to be the direct fix for:
- Harsh, erratic, or delayed gear shifts
- The vehicle being stuck in “limp mode” (usually 2nd or 3rd gear)
- Check Engine Light or Transmission Warning Lights with Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-specific codes
- Failure to upshift or downshift properly
- Poor fuel economy and potential transmission overheating
- Complete loss of transmission function
By replacing your old unit with our programmed T42 transmission control module, you are directly addressing the electronic brain of your transmission and resolving these frustrating and potentially damaging problems.
Features & Tangible Benefits
- ✔ Perfectly Matched, Ready to Install: We pre-program this module to your vehicle’s specific VIN using the latest GM software updates. This ensures it works right out of the box and eliminates the need for an expensive and time-consuming trip to the dealership for programming.
- ✔ Restore Smooth & Dependable Shifting: This module takes precise command of your transmission’s gear changes, hydraulic pressure, and torque converter lockup, eliminating erratic behavior, slipping, and delayed engagement for a safe, dependable driving experience.
- ✔ Engineered for Durability: Built to meet strict OEM standards, this module is designed to withstand the demands of a daily driver or a heavy-duty work truck. This unit is backed by our one-year replacement warranty.
- ✔ Wide GM Vehicle Compatibility: An exact-fit replacement for numerous GM cars, trucks, and SUVs equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, 4L70E, and 4L80E. It directly replaces a wide range of service numbers, including 24252114, 24234503, and 24239224.
Expert Insight from Our Technicians: From the perspective of a seasoned technician, the T42 TCM is the brain of your 4-speed automatic. When it fails, it sends confusing signals, leading to the frustrating symptoms you’re experiencing. In the past, a replacement meant a tow to the dealer for costly programming. Our VIN-programming service bypasses that entire step. We load the latest GM software specific to your vehicle *before* it ships, making the installation a simple mechanical swap. It’s the most efficient way to solve complex transmission codes and get your vehicle operating correctly with a quality programmed T42 transmission control module.
Frequently Asked Questions
What does a VIN-programmed TCM do?
VIN programming loads your vehicle’s specific operational data and the latest GM software onto the module before it ships. This ensures the TCM communicates perfectly with your engine computer and other vehicle systems, making it a true plug-and-play part without needing a trip to the dealer.
Is this a difficult part to install?
For most DIYers with basic tools, this is a straightforward installation. The module is typically located in the engine bay and is easy to access. The entire process usually takes under 30 minutes. Always remember to disconnect the battery before starting the replacement.
Will this fix my specific transmission problem?
This programmed T42 transmission control module is the definitive solution for issues caused by a faulty electronic module, including erratic shifting, limp mode, and specific TCM-related diagnostic codes. While it resolves the most common electronic failures, you should ensure your transmission’s mechanical components are in good working order.
Do I need to return my old TCM?
No. We do not require you to return your old part. There is no core charge associated with this purchase, saving you the hassle and expense of a return shipment.
How do I provide my Vehicle Identification Number (VIN)?
You can enter your 17-digit VIN during the checkout process. This is a critical step to ensure we can program the module correctly for your specific vehicle. Please double-check it for accuracy before submitting your order.