Restore Smooth Shifting to Your GMC Truck with a Pre-Programmed TCM
If your 2007-2013 GMC Sierra 1500 is suffering from harsh shifting, getting stuck in gear, or has an illuminated check engine light, a failing Transmission Control Module (TCM) is the most likely culprit. As the central computer for your automatic transmission, the TCM dictates every gear change and torque converter operation. When it fails, it can mimic a catastrophic transmission failure, causing immense stress and diagnostic confusion. This direct-fit T42 TCM, part number 24243901, is the definitive solution, arriving pre-programmed to your truck’s specific VIN for a true plug-and-play repair.
From the Diagnostic Bay: The Sierra That Dodged a Rebuild
I remember a customer bringing in his ’08 Sierra 1500, convinced he needed a full transmission rebuild. The truck was banging into gear and wouldn’t shift past 3rd. He was looking at a multi-thousand-dollar bill. After plugging in my scan tool, I saw a handful of solenoid communication codes and the classic P0700 (Transmission Control System Malfunction). Instead of pulling the pan, I checked the TCM. After years in the shop, I’ve seen hundreds of these T42 modules fail due to heat cycles and vibration. We swapped in a VIN-programmed module, and in less than an hour, the truck was shifting like it just left the factory. He saved a fortune by correctly diagnosing the brain, not the brawn, of his transmission.
Is Your Sierra Exhibiting These Transmission Problems?
A faulty TCM can manifest in several ways that are often misdiagnosed. Before you condemn your transmission, check if you’re experiencing any of these common symptoms. A new 2007-2013 Sierra 1500 TCM is often the simple fix.
- ✔ Abrupt, harsh, or delayed gear shifts.
- ✔ The vehicle is stuck in a single gear, often called “limp mode” (usually 2nd or 3rd).
- ✔ Check Engine Light or Transmission Warning Light is on with codes like P0700, P0750, or other solenoid-related DTCs.
- ✔ Inability to upshift or downshift properly as you accelerate or decelerate.
- ✔ A noticeable decrease in fuel efficiency.
- ✔ The transmission seems to slip out of gear unexpectedly.
A Straightforward 30-Minute Installation Guide
One of the best features of this module is its ease of installation. You don’t need a lift or specialized transmission tools. For most Sierra 1500 models, it’s a simple, under-hood job.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help reset the system’s memory.
- Locate the Module: On the 2007-2013 Sierra 1500, the TCM is typically located in the engine bay, right next to the battery. It’s a silver box with electrical connectors.
- Swap the Part: Carefully unplug the wiring harnesses from the old TCM. Unbolt the module from its bracket, set the new module in place, secure it with the bolts, and firmly reconnect the wiring harnesses.
- Final Steps: Reconnect the negative battery terminal. While the module is plug-and-play, it’s always good practice to use a basic OBD2 scan tool to clear any stored fault codes from the vehicle’s memory.
Why Choose Our VIN-Programmed TCM?
- ✔ No Dealer Programming Needed: We program the module to your vehicle’s VIN before shipping. This ensures it communicates perfectly with your truck’s engine computer and other systems right out of the box, saving you hundreds in dealership fees.
- ✔ Restored Performance: This module corrects faulty shift logic, ensuring your 4L60E, 4L65E, or 4L70E transmission operates with the precision it was designed for, improving both performance and fuel economy.
- ✔ OEM-Standard Quality: Built to meet or exceed original equipment specifications and backed by a one-year warranty, giving you confidence and long-term reliability for your work truck or daily driver.
- ✔ Broad Compatibility: This part, 24243901, directly interchanges with a wide range of GM part numbers, including 24252114, 24234503, 24243921, and more, making it a versatile solution.
Verified Fitment For Your GM Truck or SUV
While this is the correct 2007-2013 Sierra 1500 TCM, it also fits a wide variety of other General Motors vehicles. Please confirm your model and the module location noted below:
- GMC Sierra/Chevrolet Silverado (2007-2013): Located next to the battery (for non-hybrid models).
- GMC Yukon/Chevrolet Tahoe/Suburban (2007-2009): Located next to the battery.
- GMC Savana/Chevrolet Express (2006-2014): Located in the RH engine compartment.
- Hummer H3 (2008-2010): Located in the RH rear engine compartment.
- Chevrolet Colorado/GMC Canyon (2008-2012): Located in the RH rear engine compartment.
- …and many other GM cars, trucks, and SUVs from 2006-2014.
Frequently Asked Questions
Frequently Asked Questions
What does “VIN Programmed” actually mean?
It means we load your truck’s unique 17-digit Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This makes it a simple plug-and-play part, avoiding the need for expensive programming tools or a trip to the dealership.
Do I need to send my old part back (core charge)?
No, there is absolutely no core charge. You can keep your old part or dispose of it without any hassle or extra fees.
Is this a difficult part for a DIY mechanic to install?
Not at all. For the Sierra 1500, it’s one of the easier electronic modules to replace. It’s located right next to the battery and requires only basic hand tools. The entire process typically takes less than 30 minutes.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause (like internal shorts or failed drivers that trigger other codes), you should always diagnose any specific solenoid or sensor codes that accompany the P0700.
What kind of warranty is included?
This transmission control module comes with a full one-year replacement warranty, giving you peace of mind and protection for your investment.