Restore Peak Performance to Your Workhorse Sierra
When your 2007 GMC Sierra 2500 isn’t shifting correctly, your entire workday can grind to a halt. A faulty Transmission Control Module (TCM) can cause unpredictable shifting, loss of power, and even leave you stranded in limp mode. This genuine GM T42 TCM, service number 24255280, is the definitive solution to get your truck back on the job. It arrives expertly pre-programmed to your truck’s specific VIN, ensuring a perfect plug-and-play installation without any expensive trips to the dealership for coding.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing TCM is the likely culprit. This module is engineered to resolve these exact problems, restoring the dependable performance you rely on:
- Harsh, Erratic, or Delayed Shifting: Eliminates jarring shifts and hesitation between gears.
- Stuck in Limp Mode: Gets your truck out of a single gear (like 2nd or 3rd) and restores full functionality.
- Check Engine & Transmission Warning Lights: Specifically resolves common diagnostic trouble codes (DTCs) like P0700, P0750, and other solenoid-related faults.
- Poor Fuel Economy & Overheating: Restores efficient transmission operation, improving MPG and preventing heat-related damage.
- Complete Loss of Shifting: Re-establishes communication and control over the transmission’s functions.
Features & Benefits
- ✔ VIN-Programmed for Your Truck: We program this module to your exact 2007 GMC Sierra 2500 VIN before shipping. This means it works right out of the box, with optimal shift points and performance characteristics tailored to your vehicle. No additional programming is required.
- ✔ Restores Dependable Shifting: Regain the smooth, reliable gear changes you need for towing, hauling, and daily driving. This module precisely controls torque converter lockup and shift solenoid activation for flawless operation.
- ✔ Built to OEM Standards: Engineered for durability and longevity, this module is built to handle the demanding conditions a work truck endures, ensuring a lasting repair.
- ✔ This unit is backed by our one-year replacement warranty.
- ✔ No Core Charge: Keep your old part without the hassle or expense of returning a core. The price you see is the price you pay.
Expert Insight: From the Shop Floor
We recently helped a contractor whose 2007 Sierra 2500 went into limp mode while hauling a trailer full of equipment to a job site. He was losing time and money. The dealership quoted him a massive bill and a multi-day wait. We sent him this pre-programmed 2007 GMC Sierra 2500 transmission control module overnight. He installed it himself in the parking lot in under 30 minutes, cleared the codes, and was back to work the next morning. For a truck that needs to earn its keep, a fast, reliable, and cost-effective fix is non-negotiable.
Frequently Asked Questions
Will this part fit my 2007 Sierra 2500 with the 6.0L engine?
Yes, this T42 TCM is the correct module for the 2007 GMC Sierra 2500 (new body style) equipped with the 6.0L gas engine and 4-speed automatic transmissions like the 4L80E. We use your VIN to confirm 100% compatibility before programming.
Is this module difficult to install?
No, installation is straightforward for someone with basic mechanical skills. On the 2007 Sierra, the TCM is typically located next to the battery in the engine compartment. Simply disconnect the battery, unplug the old module’s connectors, unbolt it, and install the new one. The entire process usually takes less than 30 minutes.
Do I need to go to a dealer after installing this part?
Absolutely not. The primary benefit of our service is that the module comes pre-programmed to your vehicle’s VIN. This completely eliminates the need for any additional programming or setup at a dealership, saving you time and hundreds of dollars.
Will this fix my transmission codes like P0700?
A P0700 code is a general fault code indicating the TCM has detected a problem. This module often resolves the underlying issues that cause a P0700, as well as more specific solenoid and shifting codes. After installation, you should use a scan tool to clear all existing codes.
What happens if I provide the wrong VIN?
Providing the correct VIN is critical. The programming is specific to the vehicle’s factory configuration. An incorrect VIN will result in compatibility issues and improper transmission function. Please double-check your VIN from your driver’s side door jamb or dashboard before ordering.