Get Your Sierra Shifting Smoothly Again
Is your dependable GMC Sierra suddenly plagued by harsh, erratic shifting, or stuck in limp mode? A failing Transmission Control Module (TCM) can turn a reliable workhorse into a source of constant frustration. This genuine GM T42 TCM, service number 24255280, is the definitive solution. It arrives expertly programmed to your truck’s specific VIN, eliminating the need for expensive dealership programming. Restore the crisp, predictable performance you expect from your truck with a true plug-and-play fix.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty TCM is the most likely culprit. This pre-programmed module is engineered to resolve these problems directly, making it the ideal replacement 2007-2013 Sierra 1500 TCM for a lasting repair.
- Harsh, delayed, or slipping gear changes
- Vehicle stuck in a single gear (limp mode)
- 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 properly
- Poor fuel economy and transmission overheating
Features & Benefits
- ✔ VIN-Programmed for Your Truck: Arrives ready for installation with the latest GM software updates tailored to your specific vehicle. This ensures perfect communication between the engine and transmission for optimal performance and fuel efficiency.
- ✔ No Dealership Visit Required: Save hundreds of dollars and valuable time. Our programming makes this a direct-fit, plug-and-play component you can install yourself or have your trusted mechanic handle easily.
- ✔ Restores Transmission Function: Precisely controls shift points, torque converter lockup, and line pressure to restore smooth, factory-new shifting and prevent further transmission damage.
- ✔ OEM-Standard Quality: Built to meet or exceed General Motors’ strict specifications for durability and reliability, ensuring it can handle the tough demands of your Sierra.
- ✔ Broad Compatibility: An exact replacement for a wide range of part numbers, including 24252114, 24234503, 24230461, and 24240400, ensuring a perfect fit for many GM trucks, vans, and SUVs.
- ✔ Warranty Protection: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
In modern GM trucks, the TCM isn’t just a simple controller; it’s the central brain of your transmission, constantly communicating with the Engine Control Module (ECM) and other vehicle systems. A generic, unprogrammed module simply won’t work. Our VIN-specific programming ensures that the TCM has the correct software for your truck’s engine size, axle ratio, and tire size. This prevents compatibility errors, resolves persistent error codes, and guarantees the transmission operates exactly as the engineers intended, protecting your investment for the long haul.
Frequently Asked Questions
Do I need to get this module programmed by a dealer?
No. This module comes fully pre-programmed to your vehicle’s VIN. It is ready for installation right out of the box, saving you the time and expense of a dealership visit.
Where is the TCM located on my 2007-2013 GMC Sierra 1500?
On the 2007-2013 Sierra and Silverado trucks, the T42 TCM is typically located in the engine compartment, right next to the battery. Always disconnect the battery before beginning the replacement process.
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault request from the TCM to the ECM to turn on the check engine light. While this module often resolves the underlying issue causing the P0700, you should always scan for other, more specific P-codes (like P0751, P0756, etc.) to confirm the diagnosis. A failing TCM is a very common cause.
Is this a difficult part to install?
Installation is straightforward for someone with basic mechanical skills. It typically involves disconnecting the battery, unplugging the electrical connectors, and unbolting the old module. The entire process usually takes less than 30 minutes. This is a very common DIY repair for the 2007-2013 Sierra 1500 TCM.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep or dispose of your old module without any hassle or extra fees.