Tired of Erratic Shifting and Transmission Warning Lights?
Experiencing harsh, delayed shifts, a vehicle stuck in ‘limp mode,’ or a persistent check engine light on your GM car, truck, or SUV? These are classic signs of a failing Transmission Control Module (TCM). A faulty TCM can disrupt your vehicle’s performance, hurt fuel economy, and lead to more significant transmission damage if ignored. Stop guessing and restore your vehicle’s drivability with a reliable, pre-programmed solution.
Common Symptoms & Your Solution
This Programmed T42 TCM 24243921 is the definitive solution for a wide range of transmission issues. If you’re dealing with any of the following problems, your TCM is the likely culprit:
- Harsh, jerky, or unpredictable gear changes
- The vehicle feels stuck in one gear (limp mode)
- Delayed engagement when shifting from Park to Drive or Reverse
- Transmission-related Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-specific codes
- Failure to upshift or downshift properly
- A noticeable decrease in fuel efficiency
- Illuminated Check Engine or Transmission warning lights
Our module is expertly programmed to your vehicle’s specific VIN, ensuring it works perfectly right out of the box without any need for expensive dealership programming.
Features & Tangible Benefits
- ✔ Ready to Install, No Dealer Visit: We program this module to your vehicle’s specific VIN using the latest GM software. This means it works immediately upon installation, saving you the time, cost, and hassle of a trip to the dealership.
- ✔ Restore Smooth & Reliable Shifting: This T42 module precisely controls all transmission functions, eliminating erratic behavior, harsh shifts, and hesitation for a like-new driving experience.
- ✔ Built for Durability: Constructed to meet and exceed original equipment standards for long-lasting performance and reliability in any driving condition. This unit is backed by our one-year replacement warranty.
- ✔ Guaranteed Compatibility: A direct replacement for a wide range of service numbers including 24252114, 24234503, and 24243921, ensuring a perfect fit and function for your vehicle.
- ✔ No Core Charge Required: Keep your old part without the hassle or expense of a core return. The price you see is the price you pay.
An Expert’s Note on VIN Programming
“Many people don’t realize that a new TCM isn’t just a simple swap. The module needs to communicate perfectly with your vehicle’s Engine Control Module (ECM) and other systems. That’s where VIN programming is critical. By flashing the unit with your specific vehicle data *before* we ship it, we eliminate the communication errors that can cause persistent codes and shifting problems even after a new part is installed. This step is the difference between a frustrating repair and a successful one-day fix.”- Veteran ASE Certified Technician
Whether you’re getting your Chevrolet Silverado work truck back on the job or ensuring your family’s Tahoe is safe and reliable, this Programmed T42 TCM 24243921 is the most dependable and straightforward fix for your transmission woes. Take control of your repair and get back on the road with confidence.
Frequently Asked Questions
What information do you need to program the module?
We require your vehicle’s 17-digit Vehicle Identification Number (VIN) to program the module correctly. Please provide your VIN at checkout to ensure a plug-and-play installation.
Is this part difficult to install?
For most models, the installation is straightforward and can be completed in under 30 minutes with basic hand tools. The TCM is typically located in the engine compartment. We always recommend disconnecting the battery before starting the repair.
Will this fix check engine light codes like P0700?
Yes. If the code (like the general transmission fault code P0700 or specific solenoid codes) is being caused by a faulty TCM, this new module will resolve the issue. After installation, it’s a good practice to clear any stored codes with a standard OBD2 scan tool.
How do I know for sure if my TCM is failing?
The most common indicators are erratic shifting, getting stuck in a single gear (limp mode), and specific transmission-related trouble codes. If you are experiencing a combination of these symptoms, the TCM is the most probable cause. The Programmed T42 TCM 24243921 is designed to fix these exact issues.
Do I need to send my old part back?
No, there is absolutely no core charge or need to return your original module. You can dispose of it at your convenience, simplifying the repair process for you.