Restore Peak Performance to Your GM Truck or SUV
Is your 2007-2013 Chevrolet Silverado 1500, Tahoe, or other compatible GM vehicle suffering from erratic shifting, getting stuck in gear, or displaying transmission-related warning lights? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear change, managing torque converter lockup, and monitoring system health. When it fails, it can mimic a catastrophic transmission failure, leading to costly and unnecessary repairs. This genuine quality T42 TCM, service part number 24240449, is the definitive solution to restore smooth, reliable shifting and get you back on the road with confidence.
From the Diagnostic Bay
We had a 2011 GMC Sierra 1500 come into the shop towed in, stuck in what the owner called ‘limp mode.’ The transmission wouldn’t shift out of 3rd gear, and the check engine light was on with a P0700 code. The owner was convinced his 4L60E transmission needed a full rebuild, a multi-thousand dollar job. Before tearing anything down, we scanned for specific transmission codes and found several solenoid circuit faults. Knowing these T42 modules can cause intermittent electrical issues, we swapped in a VIN-programmed replacement. After a 15-minute install and clearing the codes, the truck shifted perfectly through all gears. The owner saved thousands by correctly diagnosing the electronic failure instead of assuming a mechanical one. This is why addressing the TCM first is a critical diagnostic step.
Diagnosing a Faulty Silverado 1500 TCM
A failing Silverado 1500 TCM can manifest in various ways, often becoming progressively worse. Early detection can prevent further strain on your transmission’s mechanical components. If your vehicle is exhibiting any of the following symptoms, your TCM is the most likely culprit.
- ✔ Erratic and Harsh Shifting: Experiencing sudden, jerky gear changes, or a noticeable bang when the transmission shifts up or down.
- ✔ Delayed Engagement: A significant pause after shifting from Park to Drive or Reverse before the transmission engages.
- ✔ Stuck in Limp Mode: The vehicle refuses to shift, often staying in a single gear (usually 2nd or 3rd) to prevent further damage.
- ✔ Warning Lights: The Check Engine Light or a dedicated transmission warning light is illuminated on your dashboard.
- ✔ Diagnostic Trouble Codes (DTCs): Common codes include P0700 (Transmission Control System Malfunction), P0750-P0758 (Shift Solenoid errors), and other transmission-related faults.
- ✔ Poor Fuel Economy: Inefficient shifting and torque converter lockup issues caused by a faulty module can lead to a noticeable drop in MPG.
- ✔ No Communication: In severe cases, a scan tool may be unable to communicate with the TCM, indicating a complete module failure.
The Plug-and-Play Solution: VIN Programming Included
Don’t waste time and money at the dealership. This T42 Transmission Control Module comes pre-programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures that the module is loaded with the latest GM software updates and is perfectly calibrated for your vehicle’s engine, transmission, and tire size. This means no additional programming is required. It is a true plug-and-play installation, resolving common software-related issues and ensuring optimal transmission performance and longevity right out of the box. Simply provide your VIN at checkout, and we handle the rest.
This module is a direct replacement for a wide range of GM part numbers, including 24252114, 24234503, 24240449, and many others, making it the ideal part for your repair. Built to meet or exceed original equipment standards, it is backed by a one-year warranty for your peace of mind. Installation is straightforward for a DIY mechanic or professional technician, typically located in the engine bay for easy access. Get your vehicle’s transmission operating like new again with this reliable, pre-programmed Silverado 1500 TCM.
Frequently Asked Questions
What does the T42 TCM do on my Silverado 1500?
The T42 Transmission Control Module (TCM) acts as the computer for your automatic transmission. It reads data from various sensors on the engine and transmission to control shift points, line pressure, and torque converter lockup, ensuring smooth and efficient operation.
Is this module difficult to install?
No, installation is generally simple and takes under 30 minutes. The module is typically located in the engine compartment (often next to the battery or on a strut tower). You will need basic hand tools. Just disconnect the battery, unplug and unbolt the old module, install the new one, and reconnect the battery.
What does ‘VIN Programmed’ actually mean?
VIN programming means we load the module with the specific software and calibrations for your exact vehicle using your VIN. This makes the unit plug-and-play, eliminating the need for an expensive trip to the dealership for programming after installation.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem and has requested the check engine light be turned on. While this module often resolves the root cause (like internal solenoid circuit faults), you should have the vehicle scanned for more specific transmission codes (like P07xx) to confirm the diagnosis.
Do I need to send back my old part?
No, there is no core charge for this part. You can keep your old module, which saves you the time and hassle of packaging and shipping it back.