Is Your Vehicle’s Transmission Acting Up?
Experiencing erratic shifting, a flashing check engine light, or your vehicle stuck in a single gear? A failing Transmission Control Module (TCM) can bring your daily drive or work schedule to a grinding halt, causing immense frustration and safety concerns. This pre-programmed GM T42 TCM is the direct-fit, professional-grade solution to restore your vehicle’s smooth performance and get you back on the road with confidence.
Common Symptoms & Your Solution
If you’re noticing any of the following issues, a faulty 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” (often 2nd or 3rd gear)
- Active 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
- Poor fuel economy and potential transmission overheating
Installing our Programmed T42 TCM 24239926 is the definitive fix, restoring communication between your engine and transmission for optimal, factory-spec operation.
Key Features & Tangible Benefits
- ✔ Plug-and-Play Installation: Arrives expertly pre-programmed to your vehicle’s specific VIN. No expensive trips to the dealership or special tools are needed—simply install it and drive.
- ✔ Restores Smooth Shifting: Precisely manages shift points, torque converter lockup, and hydraulic line pressure to eliminate harsh shifts, gear slipping, and delayed engagement.
- ✔ Long-Term Reliability: Built to strict OEM standards to provide a dependable solution to common transmission electrical faults, ensuring your vehicle operates reliably for years to come.
- ✔ Complete Compatibility: A direct replacement for a wide range of service numbers, including 24252114, 24234503, 24242391, and more, ensuring a perfect fit for your application.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Insight: The Power of VIN Programming
Why is VIN programming so critical? A generic, non-programmed module doesn’t know your vehicle’s specific parameters—like tire size, axle ratio, or engine type. This leads to poor performance and can even cause damage. We had a customer with an Express work van who was losing money every day it was down. Instead of waiting for a dealership appointment, he installed our Programmed T42 TCM 24239926 in his shop parking lot in under 30 minutes. The van was back on the road, shifting perfectly, the same afternoon. That’s the difference our pre-programming service makes: it saves you time, money, and headaches.
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
Absolutely not. This module comes fully programmed to your vehicle’s VIN. It is ready for installation right out of the box, saving you the time and expense of a dealership visit.
What are the most common signs my TCM is failing?
The most common symptoms include harsh or erratic shifting, the vehicle being stuck in limp mode (a single gear), a lit check engine or transmission warning light, and specific diagnostic codes like P0700.
Where is the T42 TCM located on my vehicle?
The location varies by model but it’s typically found in the engine compartment. Common locations include next to the battery, on the LH strut tower, under the air cleaner box, or on the RH side of the engine compartment. Your vehicle’s service manual will show the exact location.
Is this compatible with part number 24252114?
Yes, this Programmed T42 TCM 24239926 is a direct interchange for many service numbers, including 24252114, 24234503, 24230461, 24240400, and others listed in the compatibility data.
What tools are needed for installation?
Installation typically requires only basic hand tools, such as a socket set, to disconnect the battery and remove the module’s mounting bolts and electrical connectors. A scan tool is recommended to clear any stored codes after installation.
Is there a core charge for this part?
No, there is no core charge. You can keep your old part without the hassle of returning it.