End Your Transmission Troubles and Get Back to Work
Is your GMC Savana 3500 or other GM vehicle suffering from erratic shifting, getting stuck in gear, or throwing transmission codes? A faulty Transmission Control Module (TCM) can bring your work to a halt, costing you time and money. This professionally programmed T42 TCM is the definitive solution, engineered to restore your vehicle’s performance and reliability without a mandatory, expensive trip to the dealership. Get your vehicle shifting smoothly and dependably again.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing TCM is the likely culprit. This module is designed to permanently resolve these problems:
- Harsh, delayed, or unpredictable gear shifts
- Vehicle stuck in “limp mode” (usually 2nd or 3rd gear)
- Check Engine Light or Transmission Warning Light is on
- Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults
- Failure to upshift or downshift correctly
- Poor fuel economy and potential transmission overheating
Installing our Programmed 24238856 TCM is the most effective way to correct these issues, restoring the precise electronic control your automatic transmission needs to function correctly.
Features & Benefits
- ✔ 100% Plug & Play Installation: This module arrives pre-programmed to your vehicle’s specific VIN. This critical step ensures complete compatibility with your vehicle’s systems, eliminating the need for dealership programming or expensive scan tools.
- ✔ Restore Smooth Shifting: By precisely managing shift points, torque converter lockup, and line pressure, this TCM brings back the crisp, reliable performance you expect from your vehicle.
- ✔ Durable & Reliable: Built to meet or exceed strict OEM specifications for performance and longevity, ensuring it can handle the demands of a work van or daily driver.
- ✔ Solve Annoying Warning Lights: Corrects the root electronic cause of many common transmission-related DTCs, allowing you to clear the codes and keep them off.
- ✔ No Core Charge: Keep your old part. We don’t require a core return, saving you the time, cost, and hassle of shipping your old module back.
- ✔ Peace of Mind Guarantee: This unit is backed by our one-year replacement warranty.
From the Expert’s Bench
For these GM 4-speed automatics (4L60E, 4L80E, etc.), the TCM is the brain of the operation. We see countless vehicles where owners have replaced solenoids or even the entire transmission, only to find the problem was electronic. The VIN programming is not optional—it’s essential. It syncs the module to your specific vehicle’s operating parameters. A generic, non-programmed unit will often cause more problems than it solves. This Programmed 24238856 TCM ensures the job is done right the first time, saving you from frustrating comebacks and unnecessary repairs.
Frequently Asked Questions
What exactly does ‘VIN Programmed’ 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 communicates perfectly with your vehicle’s engine computer and other systems, just like the original part from the factory. No additional setup is required.
Do I need to take my vehicle to a dealer after installation?
No. Because the module is pre-programmed to your VIN, you can skip the dealership entirely. This is a true plug-and-play solution designed to save you time and hundreds of dollars in programming fees.
Where is the TCM located on my vehicle?
The location varies by model. On many GM trucks and vans like the Savana, it’s in the engine compartment on the right-hand side. On other vehicles, it might be near the battery, under the air cleaner box, or on the LH strut tower. The installation is straightforward and typically takes less than 30 minutes.
Is this the correct part for my vehicle?
This module fits a wide range of 2006-2014 GM vehicles. Please check the compatibility list on this page or match your original part number to the interchange numbers provided (e.g., 24252114, 24234503, etc.). If you are unsure, contact us with your VIN, and we will verify the fitment for you.
What happens if I don’t replace a bad TCM?
Continuing to drive with a faulty TCM can lead to more severe mechanical damage. Poor shifting can cause excessive wear on clutches and bands inside the transmission, potentially leading to a complete transmission failure that is far more expensive to repair.