Are you experiencing frustrating and unpredictable shifting in your Pontiac G5? A faulty Transmission Control Module (TCM) can turn your daily drive into a constant worry, with harsh gear changes, warning lights, and even getting stuck in limp mode. Get your car back to running smoothly and reliably with our professionally VIN-programmed GM T42 Transmission Control Module. This is not just a replacement part; it’s a direct, plug-and-play solution designed to restore your vehicle’s original performance and your peace of mind.
Common Symptoms & Your Solution
If your vehicle is showing any of these signs, a failing TCM is the likely culprit. This module is the definitive fix for:
- Harsh, erratic, or delayed gear shifts
- The vehicle being stuck in one gear (limp mode)
- Check Engine Light or Transmission warning lights on the dash
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift properly
- A sudden drop in fuel efficiency
Installing our Programmed GM T42 TCM directly addresses these issues by restoring precise communication between your engine and transmission, ensuring your vehicle operates exactly as the manufacturer intended.
Features & Tangible Benefits
- ✔ Ready to Install, No Dealer Needed: Each module is pre-programmed to your vehicle’s specific VIN. This eliminates the need for expensive dealership programming, making for a simple, plug-and-play installation right out of the box.
- ✔ Restored Drivability: Experience the return of smooth, crisp, and predictable shifting. Our module ensures your transmission gets the right commands at the right time, improving both performance and fuel economy.
- ✔ Long-Term Reliability: Built to strict OEM standards, this module is engineered to withstand the demanding conditions of daily driving, preventing recurring transmission problems and saving you from future headaches.
- ✔ Broad Compatibility: This T42 TCM is a direct replacement for a wide range of service numbers, including 24252114, 24234503, 24235754, and more, ensuring a perfect fit for your application.
- ✔ Guaranteed Performance: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
Many people are tempted to buy a used TCM from a junkyard, only to find it doesn’t work or creates new problems. That’s because a TCM is like a small computer calibrated specifically for the vehicle it came from—its engine, tire size, and gear ratios. Our VIN programming process loads your car’s exact factory specifications and the latest GM software updates onto the module before it ships. This ensures perfect communication and avoids the common conflicts that cause shifting errors, ultimately saving you from a second repair job and a trip to the dealer.
By choosing our Programmed GM T42 TCM, you’re not just buying a part; you’re investing in a reliable, long-term solution that gets you back on the road with confidence. This is the same high-quality component trusted by professional mechanics to get the job done right the first time.
Frequently Asked Questions
What does ‘VIN Programmed’ actually mean?
It means we load your vehicle’s unique 17-digit Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This ensures the TCM is perfectly calibrated for your car’s specific engine, transmission, and options for true plug-and-play installation without any extra steps.
Do I need to take my car to a dealership after installing this?
No. Because the module arrives pre-programmed to your VIN, you do not need to visit a dealer or a mechanic with special tools for programming. This saves you significant time and money.
How difficult is the installation?
For most compatible vehicles, including the Pontiac G5, the TCM is located in an accessible spot in the engine bay, like the LH strut tower. Installation typically takes under 30 minutes with basic hand tools. Simply disconnect the battery, swap the modules, and reconnect the battery.
How do I know for sure that my TCM is the problem?
Common symptoms like erratic shifting, getting stuck in gear, and specific diagnostic codes like P0700 are strong indicators. While it’s always best to have a professional diagnosis, if you are experiencing a combination of these issues, a failing TCM is the most common cause.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old part without the hassle of needing to return it, making the process simpler and more convenient for you.
Will this Programmed GM T42 TCM fix my specific error codes?
Yes, this module is designed to resolve issues related to internal TCM failure, which are often the root cause of codes like P0700 (Transmission Control System Malfunction) and various solenoid performance codes (e.g., P0750-P0770). After installation, you should clear any existing codes with a standard scan tool.